CN105451305B - A kind of cell searching system and method and mobile terminal - Google Patents
A kind of cell searching system and method and mobile terminal Download PDFInfo
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- CN105451305B CN105451305B CN201410441484.3A CN201410441484A CN105451305B CN 105451305 B CN105451305 B CN 105451305B CN 201410441484 A CN201410441484 A CN 201410441484A CN 105451305 B CN105451305 B CN 105451305B
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Abstract
The invention discloses a kind of cell searching system and method and mobile terminals, belong to web search technical field；System includes: demand acquiring unit；Data block acquiring unit；Position setup unit and measurement unit；Method includes: that the system information block of demand is determined according to the cell search mode of mobile terminal；The system information block of the scheduling information in main information data block and demand determines the reception position for needing received system information block based on the received；The remainder data frame position for removing above-mentioned reception position is set as clear position；Different measurement tasks is executed according to other cells that the duration of clear position is accordingly inserted into outside the cell measured to removing, or obtains the system frame shifting amount of respective cell.The beneficial effect of above-mentioned technical proposal is: measuring process by interting cell parallel in system information block receive process, the time of whole network search is greatly decreased, improves the efficiency of web search.
Description
Technical field
The present invention relates to web search technical field more particularly to a kind of cell searching system and method and movements eventually
End.
Background technique
In traditional network search procedure, according to the requirement of relevant communication protocol, it will usually Whole frequency band network measurement is carried out,
And the cell searched is ranked up according to obtained result is measured, to determine that the optimal cell of a signal is small as target
Area.The measurement of corresponding steps is then carried out to the Target cell, and constantly circulation is until all-network is found.
But since traditional network search procedure is comparatively laborious, certain flexibility is lacked between step and step, from
And causing search time too long, search efficiency is low.
Summary of the invention
According to problems of the prior art, a kind of cell searching system and method and mobile terminal, purport are now provided
Web search overlong time, search efficiency caused by solving the problems, such as because of multiple search and measurement step serial process are low.
Above-mentioned technical proposal specifically includes:
A kind of cell searching system is suitable for mobile terminal；Wherein, comprising:
Demand acquiring unit, for determining the need of the corresponding cell measured according to the current state of the mobile terminal
Want received system information block；
Data block acquiring unit connects the demand acquiring unit, for receiving the master in the system information block
Information data block, according to the scheduling information for including in the received system information block of the needs and the main information data block
The reception position for obtaining and needing the received system information block is calculated, and received in reception position reception needs
The system information block；
Position setup unit connects the data block acquiring unit, for that will remove described other data for receiving position
Frame position is set as clear position；
Measurement unit connects the position setup unit, for measuring to cell, and according to the clear position
Duration executes corresponding measurement task to other cells outside the cell measured.
Preferably, cell searching system, wherein include: in the measurement unit
Frequency band measurement module, for carrying out frequency band measurement to a cell；
Vertical shift obtains module, for obtaining the system frame shifting amount an of cell；
Selecting module is measured, the frequency band measurement module is separately connected and the vertical shift obtains module, for according to institute
The duration for stating clear position selects the frequency band measurement module or the vertical shift to obtain module and carries out to a cell
It measures.
Preferably, cell searching system, wherein include: in the frequency band measurement module
First measures component, for carrying out signal strength measurement to a cell；
Second measures component, for carrying out signal code power measurement and the confirmation of main scrambling code to a cell.
Preferably, cell searching system, wherein include: in the data block acquiring unit
Computing module connects the measurement unit, for according to acquisition to the system in requisition for received cell
The reception position of the main information data block is calculated in frame shifting amount.
Preferably, cell searching system, wherein suitable for single band or the mobile terminal of multiband.
Preferably, cell searching system, wherein be suitable for WCDMA communication system.
A kind of small region search method is suitable for mobile terminal；Wherein, comprising:
Step S1 obtains the current state of the mobile terminal；
Step S2 determines the received system information block of needs of the cell measured according to the current state；
Step S3 receives the main information data block in the system information block, and according to the main information number
According to the scheduling information for including in block and the received system information block is needed to obtain the received system letter of needs
Cease the corresponding reception position of data block；
Step S4 will remove described other data frame positions for receiving position and be set as clear position；
Step S5 executes other cells in addition to the cell measured according to the duration of the clear position
Corresponding measurement task.
Preferably, small region search method, wherein first before receiving the main information data block in the step S3
The system frame shifting amount of the cell measured is first obtained, institute is then calculated according to the system frame shifting amount got
State the reception position of main information data block.
Preferably, small region search method, wherein in the step S5, the corresponding measurement task includes:
Frequency band measurement is carried out to a cell；Or
Obtain the system frame shifting amount an of cell.
Preferably, small region search method, wherein the frequency band, which measures, includes:
Signal strength measurement is carried out to a cell；Or
Signal code power measurement and the confirmation of main scrambling code are carried out to a cell.
Preferably, small region search method, wherein suitable for single band or the mobile terminal of multiband.
Preferably, small region search method, wherein be suitable for WCDMA communication system.
A kind of mobile terminal, wherein including above-mentioned cell searching system.
A kind of mobile terminal, wherein use above-mentioned small region search method.
The beneficial effect of above-mentioned technical proposal is: by interting cell amount parallel in system information block receive process
Survey process is greatly decreased the time of whole network search, improves the efficiency of web search.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of network searching system in preferred embodiment of the invention；
Fig. 2 is a kind of flow diagram of network search method in preferred embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
In traditional network search procedure, mobile device will do it Whole frequency band network measure, and according to measurement into
Row sequence, the optimal cell of selection signal then carry out the acquisition of frame shifting amount to Target cell and system are believed as target
Cease the acquisition of data block (System Information Block, SIB)；The above process constantly recycles, until all cell networks
Until network is found.
But in the prior art, during carrying out Whole frequency band measurement, for cell to be detected for one, lead to
The serial process for carrying out frequency band measurement, the acquisition of system frame shifting amount and system information block and obtaining often is needed, that is, is completed
It could start to execute the next item down task after one task.Above-mentioned serial task implementation procedure consumes traditional network search procedure
When it is longer, particularly with the more complicated area of the network coverage, can make entirely search for network time become very long, thus
It is greatly reduced and searches net efficiency.
Based on the above-mentioned problems in the prior art, in preferred embodiment of the invention, a kind of cell searching is provided
System, it is specific as shown in Figure 1, comprising:
Demand acquiring unit 1.In preferred embodiment of the invention, when each mobile terminal carries out Whole frequency band search, all
With a scheduled current state.Further, in preferred embodiment of the invention, above-mentioned current state is mobile terminal
Currently used cell search mode, such as it is to search net mode manually that mobile terminal is currently used.And each cell is searched
For rope mode, its phase is all had in requisition for received system information block.Such as searching net mode manually, it is only necessary to
Receive main information data block (Master Information Block, MIB).
Therefore, in preferred embodiment of the invention, the demand acquiring unit 1 makes for obtaining mobile terminal currently
Cell search mode, and the corresponding cell measured is obtained according to the currently used cell search mode got
Need received system information block.
In preferred embodiment of the invention, above-mentioned cell searching system further include:
Data block acquiring unit 2 connects the demand acquiring unit 1.In preferred embodiment of the invention, data block is obtained
The demand (needing received system information block) for taking unit 2 to obtain for acquiring unit 1 according to demand obtains corresponding system
System information data block.
In preferred embodiment of the invention, above-mentioned data block acquiring unit 2 is passed between base station and mobile terminal
Above system information data block is obtained in defeated wireless signal.
In preferred embodiment of the invention, data block acquiring unit 2 according to the correspondence of mobile terminal current demand
The system information block of the cell of measurement obtains main information data block (MIB) therein first.
It include corresponding scheduling information in main information data block in preferred embodiment of the invention.Data block obtains
Unit 2 obtains corresponding system information number according to the scheduling information and the predetermined received system information block of needs
According to the reception position of block.
For example, in a kind of scheduled cell search mode, mobile terminal needs are connect in preferred embodiment of the invention
The MIB and SIB1/2/3/5 for receiving the cell measured, then in data block acquiring unit after receiving MIB, according in MIB
Including scheduling information, the reception position of the SIB1/2/3/5 after obtaining, and being received according to the reception position that gets corresponding
SIB1/2/3/5.
In preferred embodiment of the invention, in above-mentioned cell searching system further include:
Position setup unit 3 connects above-mentioned data block acquiring unit 2.In preferred embodiment of the invention, position setting
Unit 3 is used for the reception position according to above-mentioned acquisition, sets corresponding clear position.Specifically, preferable implementation of the invention
In example, the remainder data frame position for removing above-mentioned reception position is set as clear position by position setup unit 3.
For example, in preferred embodiment of the invention, it is mobile whole according to chosen currently used cell search mode
End needs to receive the MIB and SIB1/2/3/5 of the corresponding cell measured, then corresponding SIB4/7/8 and other correspondences
The corresponding reception position for not needing received system information block is clear position.
In preferred embodiment of the invention, in above-mentioned cell searching system further include:
Measurement unit 4 connects above-mentioned position setup unit 3.In preferred embodiment of the invention, measurement unit 4 is used for
The cell measured is measured, and according to the duration of above-mentioned clear position, to removing above-mentioned measuring
Cell outside cell executes corresponding measurement task.
In preferred embodiment of the invention, above-mentioned measurement unit 4 further comprises:
Frequency band measurement module 41, for carrying out frequency band measurement to a cell；
Vertical shift obtain module 42, for obtain a cell system frame shifting amount (System Frame Offset,
SFO)。
Selecting module 43 is measured, above-mentioned frequency band measurement module 41 is separately connected and vertical shift obtains module 42, be used for basis
The duration of above-mentioned clear position, corresponding selection carry out frequency band measurement task and still carry out vertical shift acquisition task, i.e. basis
Which measurement task the duration of clear position, selection execute in the duration.
In preferred embodiment of the invention, it is based on above-mentioned setting, above-mentioned data block acquiring unit 2 further comprises:
Computing module 21 connects above-mentioned measurement unit 4.In preferred embodiment of the invention, computing module 21 is for obtaining
The system frame shifting amount for corresponding to the cell measured is taken, and is calculated and is being measured according to the system frame shifting amount of acquisition
Cell main information data block reception position.
For example, in preferred embodiment of the invention, for searching net manually, it is only necessary to MIB is first obtained, if needing later
SIB (such as needing to obtain SIB1/2) is obtained, then corresponding reception position is obtained according to the scheduling information for including in MIB, if
It also needs to obtain system call block message (Scheduling Blocks, SB) later, then continues to be obtained according to scheduling information corresponding
Reception position (such as needing to obtain SB1/2).
Therefore, in preferred embodiment of the invention, before carrying out system information block acquisition, pass through system first
The reception position of MIB is calculated in frame shifting amount, and all kinds of tune for needing the system information block obtained are then obtained according to MIB
Spend information.
In preferred embodiment of the invention, include: in above-mentioned frequency band measurement module 41
First measures component 411.In preferred embodiment of the invention, first, which measures component 411, is used for a cell
Received signal strength (Received Signal Strength Indication, RSSI) is carried out to measure.
Second measures component 412.In preferred embodiment of the invention, second, which measures component 412, is used for a cell
Carry out signal code power (Reveived Signal Code Power, RSCP) measurement and main scrambling code (Primary
Scrambling Code, PSC) confirmation.
In preferred embodiment of the invention, since for different measurement frequency points, above-mentioned measurement task does not have
There is stringent execution sequencing, i.e., which kind of measurement task is executed for different frequency points, needs to be continued according to clear position
Duration, and the effective decision that current frequency point needs to measure.In preferred embodiment of the invention, one is needed to measure
Frequency point for, above-mentioned actual effect can be frequency point to be measured for the desirability of different measurement tasks；Such as
For the frequency point that the needs measure, RSSI measurement, RSCP measurement and PSC confirmation were carried out, but had not yet been obtained
SFO, then the frequency point is five-star for the SFO desirability obtained, as long as then the duration satisfaction of clear position can
SFO acquisition is carried out, that is, arranges to carry out SFO acquisition to the frequency point.In another example for the frequency point to be measured for one,
RSSI measurement was done, then the RSCP of the frequency point is measured and PSC confirmation should not measure with RSSI and separate the too long time, otherwise can
The actual effect of measurement is lost, therefore the frequency point measures RSCP in this case and the desirability of PSC confirmation is higher.
In preferred embodiment of the invention, in above-mentioned cell searching system further include:
Mode selecting unit 5 connects above-mentioned pattern acquiring unit 1.In preferred embodiment of the invention, model selection list
Member 5 determines the currently used cell search mode of mobile terminal for user.For example, mobile terminal is currently needed using searching manually
Net mode, then user selects to search net mode manually by mode selecting unit 5, and pattern acquiring unit 1 is according to the hand selected
Dynamic net pattern acquiring of searching needs received corresponding system information block, such as only needs to receive in the case where searching net mode manually
MIB。
In preferred embodiment of the invention, the setting of above-mentioned mode selecting unit 5 is only to be supplied to a kind of energy of user
Enough modes for freely setting cell search mode.It, not can only be by user for the cell search mode of mobile terminal
Sets itself can also carry out cell searching according to the mode that mobile terminal has been set, such as just normally opened in mobile terminal
Enter corresponding cell search mode etc. when machine.
In conclusion preferable purpose of the invention is: according to mobile terminal, currently used cell search mode is true
The received system information block of needs of the fixed corresponding cell measured.Then received system information data as needed
Block determines its corresponding reception position, determines corresponding clear position further according to the reception position of acquisition, i.e., will remove above-mentioned connect
Other data frame positions for receiving position are determined as clear position.
Then, other cells being accordingly inserted into according to the duration of clear position outside the cell measured to removing are held
It is different that line frequency band measures (such as RSSI is measured, RSCP is measured and PSC confirmation) or acquisition system vertical shift (SFO acquisition) etc.
Measurement task.Intert during traditional acquisition system information block and carries out to the frequency band measurement of cell or system
Frame shifting amount obtains, and executes parallel so that above-mentioned measurement task and data block obtain task, reduces the search duration of web search,
Promote search efficiency.
In preferred embodiment of the invention, due to needing prearrange when which kind of cell measurement task carried out, because
The calculating of the duration of this above-mentioned clear position and clear position should be fulfiled ahead of schedule, i.e., when obtaining reception position
The confirmation of clear position and the calculating of its duration can be completed, is appointed next to select to execute corresponding cell and to measure
Business.
In preferred embodiment of the invention, above-mentioned cell searching system is applied to the mobile terminal of single band or multiband
In.
In preferred embodiment of the invention, above-mentioned cell searching system is applied in WCDMA communication system.
In preferred embodiment of the invention, searched as shown in Fig. 2, providing a kind of cell based on above-mentioned cell searching system
Suo Fangfa is specifically included:
Step S1 obtains the current state of mobile terminal；
In preferred embodiment of the invention, the current state of mobile terminal may include currently used small of mobile terminal
Area searching mode, the cell search mode can be set by user's sets itself, such as by the cell search mode of mobile terminal
It is set to and searches net mode etc. manually, can also be determined by mobile terminal is default, such as enter accordingly in mobile terminal-opening
Cell search mode.
Step S2 determines the received system of needs of the corresponding cell measured according to currently used cell search mode
System information data block；
In preferred embodiment of the invention, for example, it is current to search net mode manually, then it is only needed in the case where searching net mode manually
Obtain MIB；
In preferred embodiment of the invention, in step S2, according to different cell search modes, determine that needs are received
Different system information blocks.
Step S3 receives the main information data block in system information block, and includes according in main information data block
Scheduling information and the corresponding reception for needing the received system information block of received system information block acquisition needs
Position；
In preferred embodiment of the invention, according to the received system information block of the needs obtained in step S2, with
And the scheduling information in the main information data block obtained first, determine the reception for next needing received system information block
Position receives the received system information block of needs then according to the reception position obtained.
In preferred embodiment of the invention, before the main information data block for receiving the cell measured, obtain first
The system frame shifting amount for taking the cell measured, is then calculated the reception of main information data block according to system frame shifting amount
Position.
Step S4 will remove the remainder data frame position for receiving position and be set as clear position；
In preferred embodiment of the invention, for example, mobile terminal only needs to connect under some preset cell search mode
The MIB and SIB3 of the cell measured are received, then remainder data frame position (such as SIB1/2/4/5/6/7/8 etc.) is
Clear position.
Step S5 executes other cells in addition to the cell measured corresponding according to the duration of clear position
Measurement task.
In preferred embodiment of the invention, after detecting and determining clear position, according to holding for different clear positions
Continue duration, other cells except the cell measured to removing execute different measurement tasks.
In preferred embodiment of the invention, corresponding measurement task equally is executed to the cell measured.
In preferred embodiment of the invention, measurement task may include:
Frequency band measurement is carried out to cell；Or
Obtain the system frame shifting amount of cell.
Further, in preferred embodiment of the invention, carrying out frequency band measurement to cell includes:
RSSI measurement is carried out to cell；Or
RSCP measurement and PSC confirmation are carried out to cell.
In preferred embodiment of the invention, frequency band measurement is roughly divided into two stages: the first stage is RSSI measurement, the
Two-stage is that RSCP is measured and RSC confirms.The time span as used in the two stages is different, it is therefore desirable to solely as two
Vertical task executes in different free time sections.Therefore, in preferred embodiment of the invention, RSSI is measured and is used as one
A independent task execution, and it includes executing in another independent task that RSCP, which is measured with PSC confirmation,.
In preferred embodiment of the invention, above-mentioned small region search method is suitable for the mobile end of single band or multiband
In end.
In preferred embodiment of the invention, above-mentioned small region search method is suitable for WCDMA communication system.
In preferred embodiment of the invention, a kind of mobile terminal is also provided, including above-mentioned cell searching system.
In preferred embodiment of the invention, a kind of mobile terminal is also provided, wherein using above-mentioned small region search method.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (13)
1. a kind of cell searching system is suitable for mobile terminal；It is characterised by comprising:
Demand acquiring unit, for determining that the needs of the corresponding cell measured connect according to the current state of the mobile terminal
The system information block of receipts；
The current state of the mobile terminal is the currently used cell search mode of the mobile terminal；
Data block acquiring unit connects the demand acquiring unit, for receiving the main information in the system information block
Data block is calculated according to the scheduling information for including in the received system information block of the needs and the main information data block
The reception position for needing the received system information block is obtained, and received described in reception position reception needs
System information block；
Position setup unit connects the data block acquiring unit, for that will remove described other data framing bits for receiving position
It installs and is set to clear position；
Measurement unit connects the position setup unit, continues for measuring to cell, and according to the clear position
Duration executes corresponding measurement task to other cells outside the cell measured.
2. cell searching system as described in claim 1, which is characterized in that include: in the measurement unit
Frequency band measurement module, for carrying out frequency band measurement to a cell；
Vertical shift obtains module, for obtaining the system frame shifting amount an of cell；
Selecting module is measured, the frequency band measurement module is separately connected and the vertical shift obtains module, for according to the sky
The duration of not busy position selects the frequency band measurement module or the vertical shift to obtain module to a cell amount of progress
It surveys.
3. cell searching system as claimed in claim 2, which is characterized in that include: in the frequency band measurement module
First measures component, for carrying out signal strength measurement to a cell；
Second measures component, for carrying out signal code power measurement and the confirmation of main scrambling code to a cell.
4. cell searching system as claimed in claim 2, which is characterized in that include: in the data block acquiring unit
Computing module connects the measurement unit, for according to the inclined to the system-frame in requisition for received cell of acquisition
The reception position of the main information data block is calculated in shifting amount.
5. cell searching system as described in claim 1, which is characterized in that suitable for single band or the mobile end of multiband
End.
6. cell searching system as described in claim 1, which is characterized in that be suitable for WCDMA communication system.
7. a kind of small region search method is suitable for mobile terminal；It is characterised by comprising:
Step S1, obtains the current state of the mobile terminal, and the current state of the mobile terminal is that the mobile terminal is worked as
The preceding cell search mode used；
Step S2 determines the received system information block of needs of the cell measured according to the current state；
Step S3 receives the main information data block in the system information block, and wraps according in the main information data block
The received system information block of scheduling information and needs included, which obtains, needs the received system information block
Corresponding reception position；
Step S4 will remove described other data frame positions for receiving position and be set as clear position；
Step S5 executes other cells in addition to the cell measured corresponding according to the duration of the clear position
Measurement task.
8. small region search method as claimed in claim 7, which is characterized in that in the step S3, receiving the main information
Before data block, the system frame shifting amount of the cell measured is obtained first, it is then inclined according to the system-frame got
The reception position of the main information data block is calculated in shifting amount.
9. small region search method as claimed in claim 7, which is characterized in that in the step S5, corresponding described measure is appointed
Business includes:
Frequency band measurement is carried out to a cell；Or
Obtain the system frame shifting amount an of cell.
10. small region search method as claimed in claim 9, which is characterized in that the frequency band, which measures, includes:
Signal strength measurement is carried out to a cell；Or
Signal code power measurement and the confirmation of main scrambling code are carried out to a cell.
11. small region search method as claimed in claim 7, which is characterized in that suitable for single band or the mobile end of multiband
End.
12. small region search method as claimed in claim 7, which is characterized in that be suitable for WCDMA communication system.
13. a kind of mobile terminal, which is characterized in that including cell searching system such as claimed in any one of claims 1 to 6.
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| US10178612B2 (en) * | 2016-04-26 | 2019-01-08 | Qualcomm Incorporated | Enhanced machine-type communications cell acquisition using narrow band synchronization channel |
| CN107404751B (en) * | 2016-05-19 | 2020-05-08 | 联芯科技有限公司 | Cell searching method and device under multiple radio frequency channels |
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| CN1905737A (en) * | 2005-07-29 | 2007-01-31 | 华为技术有限公司 | Measuring method based on different measuring purposes for user terminal and user terminal thereof |
| CN101959285A (en) * | 2009-07-21 | 2011-01-26 | 上海摩波彼克半导体有限公司 | Method for quickly searching full-band cell in WCDMA (Wideband Code Division Multiple Access) communication system |
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|---|---|---|---|---|
| CN1905737A (en) * | 2005-07-29 | 2007-01-31 | 华为技术有限公司 | Measuring method based on different measuring purposes for user terminal and user terminal thereof |
| CN101959285A (en) * | 2009-07-21 | 2011-01-26 | 上海摩波彼克半导体有限公司 | Method for quickly searching full-band cell in WCDMA (Wideband Code Division Multiple Access) communication system |
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