CN106413042A - User terminal and frequency point search method thereof - Google Patents
User terminal and frequency point search method thereof Download PDFInfo
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- CN106413042A CN106413042A CN201510465713.XA CN201510465713A CN106413042A CN 106413042 A CN106413042 A CN 106413042A CN 201510465713 A CN201510465713 A CN 201510465713A CN 106413042 A CN106413042 A CN 106413042A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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Abstract
A user terminal and a frequency point search method thereof are provided. The method comprises a step a of receiving a frequency point search instruction, the frequency point search instruction including information of wireless signals to be received; a step b of controlling the user terminal according to the frequency point search instruction to receive wireless signals corresponding to at least two frequency points in the wireless signals to be received according to a preset bandwidth with a preset time, performing Fourier transform on the received wireless signals, and calculating the power values of corresponding frequency points according to the amplitude value, subjected to Fourier transform, of the frequency points corresponding to the received wireless signals; and a step c of using the frequency points with power values greater than a preset power threshold value as candidate frequency points. The method can improve network search speed and accuracy of the user terminal.
Description
Technical field
The present invention relates to communication technical field is and in particular to a kind of user terminal and its frequency searching method.
Background technology
In wireless communications, user terminal (User Equipment, UE) needs first to search for network, finds
Access described network after suitable network, the service of operator's offer just can be provided.
At present, after UE start, it is searched network process and is：It is first according to the priority of communication pattern, exist successively
Carry out frequency search under each communication pattern, obtain several candidate's frequencies；Then from the candidate being obtained
In frequency select meet the frequency that described communication pattern specifies, and to selected frequency corresponding cell according to
Network process is searched in secondary execution, until finding suitable cell；Finally reside in this cell, complete UE searches net
Process.
Wherein, when UE carries out frequency search under to each communication pattern, receive a certain frequency first one by one
Under wireless signal, then received signal strength indicator is carried out to described frequency
(Received Signal Strength Indication, RSSI) measures, that is, measure described UE when certain
The all radio signal power sums receiving on certain frequency of gap, obtain frequency corresponding with described frequency
Point performance number；Then using frequency performance number be more than certain power threshold the corresponding frequency of wireless signal as
Candidate's frequency.
Because each communication pattern has a large amount of frequencies, frequency carries out rssi measurement and can lead to frequency one by one
Search speed is very slow.And, the presence due to time domain interference, can carry out rssi measurement to each frequency
Result produces impact, ultimately results in UE and resides in non-optimal cell.
Content of the invention
The problem to be solved in the present invention is how to improve speed and the accuracy that user terminal searches net.
For solving the above problems, embodiments provide a kind of frequency searching method of user terminal,
Methods described includes：
Step a, receives frequency search instruction, and described frequency search instruction includes：Wireless signal to be received
Information；
Step b, according to described frequency search instruction, controls described user terminal according to pre- in Preset Time
If bandwidth, receive the wireless signal of at least corresponding two frequency bins in described wireless signal to be received；Docking
The wireless signal receiving carries out Fourier transformation respectively；According to obtain after Fourier transformation with received
The corresponding frequency of wireless signal range value, calculate corresponding frequency performance number respectively；
Step c, using the frequency being more than predetermined power threshold value in calculated frequency performance number as candidate's frequency
Point.
Alternatively, repeated execution of steps b reaches preset times；
Methods described also includes：
Frequency performance number averaged respectively to each each frequency calculated, as described frequency
The actual frequency performance number of point.
Alternatively, before execution step c, methods described also includes：
According to the frequency performance number being obtained order from big to small, corresponding frequency is ranked up.
Alternatively, the information of described wireless signal to be received includes：The communication of wireless signal to be received
Pattern information, and the band information of wireless signal to be received.
Alternatively, described pre-set bandwidths are the maximum bandwidth of described user terminal radio circuit.
The embodiment of the present invention additionally provides a kind of user terminal, and described user terminal includes：
Receiving unit, is suitable to receive frequency search instruction, described frequency search instruction includes：To be received
The information of wireless signal；
Processing unit, is suitable to according to described frequency search instruction, controls described user terminal in Preset Time
The interior wireless communication receiving at least corresponding two frequency bins in described wireless signal to be received according to pre-set bandwidths
Number；Fourier transformation is carried out respectively to the wireless signal receiving；According to obtain after Fourier transformation with
The range value of the corresponding frequency of received wireless signal, calculates corresponding performance number respectively；
Choose unit, be suitable to make the frequency being more than predetermined power threshold value in calculated frequency performance number
For candidate's frequency.
Alternatively, described processing unit is suitable in Preset Time, receives described waiting according to pre-set bandwidths
The number of times of the wireless signal of at least corresponding two frequency bins in the wireless signal received, during less than preset times, weight
Multiple execution is until reach preset times；
Described user terminal also includes：
Computing unit, is suitable to the frequency performance number of each each frequency calculated is asked for averagely respectively
Value, as the actual frequency performance number of described frequency.
Alternatively, described user terminal also includes：Sequencing unit, is suitable to according to the frequency power being obtained
Value order from big to small, by being ranked up of corresponding frequency.
Alternatively, in the frequency search instruction that described receiving unit receives, described wireless signal to be received
Information include：The communication mode information of wireless signal to be received, and wireless signal to be received
Band information.
Alternatively, described processing unit using the maximum bandwidth of described radio circuit as described pre-set bandwidths.
Compared with prior art, technical scheme at least has advantages below：
Receive wireless signal by controlling user terminal according to pre-set bandwidths in Preset Time, so permissible
Parallel reception at least corresponds to the multiple wireless signal of two frequency bins, such that it is able to multiple frequency parallel measurements,
Effectively improve the speed of frequency search.And, when measuring to described frequency, it is will to connect in time domain
The signal receiving is changed and is measured to frequency domain, therefore can reduce what time domain interference produced to frequency measurement
Impact, improves the accuracy of frequency search.
Further, by by the frequency performance number averaged of each each frequency calculated,
And the result after will be average is as the actual frequency performance number of described frequency, so that frequency is searched for more
Accurately.
Further, by the order from big to small according to obtained frequency performance number, by corresponding frequency
It is ranked up, and then can be during choosing candidate's frequency, when the frequency performance number of wherein one frequency
During less than predetermined power threshold values, that is, stop choosing candidate's frequency, frequency work(that need not again to follow-up frequency
Rate is calculated, and therefore can improve the speed of frequency search further.
Further, by described pre-set bandwidths being set to the maximum bandwidth of user terminal radio circuit,
So that described user terminal receives the wireless signal of corresponding more multifrequency point within the default time as far as possible,
Such that it is able to more frequency parallel measurements, improve the speed of frequency search further.
Brief description
Fig. 1 is a kind of frequency searching method flow chart of user terminal in the embodiment of the present invention；
Fig. 2 is the frequency searching method flow chart of another kind of user terminal in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of user terminal in the embodiment of the present invention；
Fig. 4 makes the structural representation of another kind of user terminal in the embodiment of the present invention.
Specific embodiment
At present, UE, when carrying out frequency search, generally controls its radio circuit to receive one by one on certain frequency
Wireless signal, then calculate the power sum of the corresponding all wireless signals of described frequency, that is, to described frequency
Point carries out rssi measurement, obtains the frequency performance number of described frequency, finally according to the choosing of described frequency performance number
Take corresponding frequency as candidate's frequency.
Because described UE generally can support multiple communication patterns, and each communication pattern comprise substantial amounts of
Frequency range, each frequency range corresponding multiple frequencies again, frequency carries out connecing of wireless signal one by one to control radio circuit
Receive, then rssi measurement is carried out to described frequency, the frequency of UE can be led to search for very slow.And, due to
Each wireless signal is to arrive in different reception, therefore, when rssi measurement is carried out to frequency,
The random distribution of time domain interference can produce certain impact to measurement result, leads to described UE frequency search
Relatively low exactly.
For the problems referred to above, The embodiment provides a kind of frequency searching method, methods described is led to
Cross the wireless communication controlling user terminal to receive corresponding at least two frequencies in Preset Time according to pre-set bandwidths
Number, such that it is able to carry out parallel measurement to multiple frequencies, rather than frequency measures one by one, effectively improves
Frequency search speed.And, by the wireless signal receiving is carried out Fourier transformation, and then permissible
In frequency domain, to the described wireless signal receiving, corresponding frequency carries out frequency measurement, such that it is able to effectively keep away
Exempt from time domain interference, therefore can improve the accuracy of frequency search.
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings
The specific embodiment of the present invention is explained.
As shown in figure 1, embodiments providing a kind of frequency searching method of user terminal, described
Method may include steps of：
Step a, receives frequency search instruction.
In being embodied as, after UE start, can execute and initially search network process, obtain synchronous service
Cell simultaneously carries out resident.In above process, UE can produce frequency search instruction, and then can be little to neighbour
Area measures, and is easy to subsequently carry out cell switching or cell reselection.
Wherein, described frequency search instruction includes the information of wireless signal to be received.Described to be received
The information of wireless signal can include the communication mode information of wireless signal to be received, and nothing to be received
The band information of line signal.Therefore, according to described frequency search instruction it may be determined that to be received is wireless
The communication pattern of signal and frequency range.
Step b, receives the wireless signal of at least corresponding two frequency bins in described wireless signal to be received, and
Calculate corresponding frequency performance number respectively.
Specifically, described step b may include steps of b1～b3：
Step b1, according to described frequency search instruction, control described user terminal in Preset Time according to
Pre-set bandwidths receive the wireless signal of at least corresponding two frequency bins in described wireless signal to be received.
In being embodied as, in UE, it is provided with radio circuit, sending and receiving can be connect by described radio circuit
Send and process signal.Therefore, when UE receives described frequency search instruction, searched according to described frequency
The communication pattern of wireless signal to be received carrying in Suo Zhiling and frequency range, its interior radio circuit is connect
The communication pattern of the collection of letters number and frequency range correspondence adjust communication pattern and frequency to described wireless signal to be searched
Section, receives described wireless signal to be received by described radio circuit.
In being embodied as, described pre-set bandwidths can be according to wireless signal corresponding frequency number to be received
Amount is configured.Described pre-set bandwidths are bigger, the corresponding frequency of the wireless signal receiving in Preset Time
Point quantity is also more.Described UE both can be using the fractional bandwidth of described radio circuit as described default band
Wide it is also possible to using the maximum bandwidth of described radio circuit as described pre-set bandwidths, with the default time
Interior, receive the wireless signal of corresponding more multifrequency point as much as possible.But no matter how described pre-set bandwidths set
Put, as long as described UE can receive plural wireless signal within the default time.
It should be noted that described Preset Time can be carried out according to actual conditions by those skilled in the art
Setting, as long as in set Preset Time, it is right that described radio circuit can receive according to pre-set bandwidths
Answer the wireless signal of two or more frequency.For example, described Preset Time can be 5ms.
It should be noted that when, in described frequency search instruction, described wireless signal to be received is corresponding
Frequency quantity, the wireless communication that can receive according to pre-set bandwidths in Preset Time more than described radio circuit
During number corresponding frequency quantity, described UE can receive according to pre-set bandwidths in multiple Preset Times and correspond to
The wireless signal of other frequencies, until the radio circuit of described UE receives described frequency search instruction and corresponds to
Whole frequencies wireless signal.That is, described UE can be penetrated by adjustment in Preset Time
The bandwidth of frequency circuit receiving the wireless signal of the corresponding whole frequencies of described frequency search instruction it is also possible to
Respectively in multiple Preset Times, described frequency search instruction is received by the bandwidth adjusting radio circuit
The wireless signal of corresponding part frequency.It is concrete that no matter how described UE receives described frequency search instruction pair
The wireless signal of the frequency answered, all not becomes limitation of the present invention, and all in protection scope of the present invention
Within, as long as described UE can receive the wireless signal of the corresponding whole frequencies of described frequency search instruction
?.
Step b2, carries out Fourier transformation respectively to the wireless signal receiving.
For example, UE receives 20 wireless signals within the default time, can be wireless by described 20
Signal carries out Fourier transformation respectively, and 20 wireless signals that will be received are become by time-domain signal respectively
It is changed to frequency-region signal, in frequency domain, received wireless signal is processed, to avoid the interference of time domain.
Wherein, when Fourier transformation is carried out to received wireless signal, compare clearly frequency to obtain
Spectrogram picture, number of sampling could be arranged at 2048 points, and that is, the spectrum intervals of adjacent two wireless signals is
15KHZ.
In being embodied as, in order to improve the speed that the wireless signal receiving is carried out with Fourier transformation,
Can be using Fast Fourier Transform (FFT) (Fast Fourier Transformation, FFT) to the nothing receiving
Line signal carries out the conversion that time domain turns frequency domain.It is of course also possible to the algorithm pair using other Fourier transformations
The wireless signal receiving turns frequency domain by time domain, is not construed as limiting herein, as long as the Fourier transformation being adopted
Received wireless signal can be turned frequency domain by time domain by algorithm.
Step b3, calculates corresponding performance number respectively according to the range value obtaining after Fourier transformation.
Each wireless signal is carried out after Fourier transformation, frequency corresponding with described wireless signal can be obtained
Spectrum curve.The corresponding frequency of described wireless signal can be obtained from the corresponding data of described spectrum curve
Range value, therefore, corresponding frequency can be calculated according to the range value of the corresponding frequency of described wireless signal
Point performance number.
Step c, using the frequency being more than predetermined power threshold value in calculated frequency performance number as candidate's frequency
Point.
The frequency performance number of each frequency calculated is compared with default power threshold respectively,
And when the frequency performance number of described frequency is more than predetermined power threshold values, using described frequency as candidate's frequency.
UE can recorded obtained candidate's frequency in candidate's frequency list, subsequently can be supported according to it
Communication pattern, described candidate's frequency is screened, and according to screening after frequency start cell initial
Search procedure.
It is understood that during concrete determination candidate's frequency, predetermined power threshold value is one in itself
Individual boundary value is it is also possible to when frequency performance number is equal to predetermined power threshold value, that is, determine that described frequency is to wait
Frequency-selecting point.In other words, boundary value can determine described frequency for candidate's frequency it is also possible to determine institute
State frequency non-candidate frequency, specifically whether determine, voluntarily can be arranged by technical staff.However, whether
Determine, such scheme is all within the scope of the present invention.
In being embodied as, UE, according to described frequency search instruction, can control radio circuit default
Only receive once according to pre-set bandwidths in time and in described wireless signal to be received, at least correspond to two frequency bins
Wireless signal (as shown in Figure 1) it is also possible to control radio circuit within the default time according to default band
The wide wireless signal receiving at least corresponding two frequency bins in wireless signal to be received described in n times is (as Fig. 2
Shown).Wherein N is preset times.
As shown in figure 1, when UE controls radio circuit only to receive one according to pre-set bandwidths within the default time
During secondary described wireless signal to be received, after execution step b, you can execution step c.As shown in Fig. 2
When UE controls radio circuit to receive nothing to be received described in n times according to pre-set bandwidths within the default time
During line signal, after execution step b, can first judge described radio circuit within the default time according to pre-
If whether the number of times that bandwidth receives described wireless signal to be received is equal to N (i.e. step d), and described
Radio circuit receives number of times of described wireless signal to be received etc. within the default time according to pre-set bandwidths
When N, then execution step e and c successively, otherwise repeated execution of steps b1 to b3, until described radio frequency
It is equal to N according to the number of times that pre-set bandwidths receive described wireless signal to be received in the time of circuit presets.
Below the frequency searching method of the user terminal shown in Fig. 2 is described in detail：
As shown in Fig. 2 with respect to Fig. 1, in addition to step a, step b and step c, methods described is also
Including：
Step d, judges that described radio circuit received according to pre-set bandwidths within the default time described to be received
Wireless signal in the number of times of wireless signal of at least corresponding two frequency bins whether be equal to N.
It should be noted that described N can be set according to actual conditions by those skilled in the art.For example,
The value of described N can be set to 2 or 3.
When described radio circuit receives described wireless communication to be received according to pre-set bandwidths within the default time
Number number of times when being less than N, repeated execution of steps b, until described radio circuit presses within the default time
Receive the secondary of the wireless signal at least corresponding to two frequency bins in described wireless signal to be received according to pre-set bandwidths
Number is equal to N.When described radio circuit is described to be received according to pre-set bandwidths reception within the default time
When in wireless signal, the number of times of the wireless signal of at least corresponding two frequency bins is equal to N, execution step e.
Step e, the frequency performance number averaged respectively to each each frequency calculated, as
The actual frequency performance number of described frequency.
UE receives the wireless signal of at least corresponding two frequency bins in described wireless signal to be received every time,
The frequency performance number of frequency corresponding with received wireless signal will be obtained.Each acquisition is same
After the frequency performance number of one frequency carries out sum operation, with receive described frequency corresponding wireless signal
Number of times carries out division operation, the frequency performance number of each each frequency calculated is asked for putting down respectively
Average, using the result after averaged as described frequency actual frequency performance number.
In being embodied as, in order to improve the speed of frequency search further, in the reality obtaining described frequency
After the frequency performance number of border, that is, before execution step c, institute in the method shown in Fig. 1 and Fig. 2
The method shown all can also include：
Step f, according to the frequency performance number being obtained order from big to small, corresponding frequency is arranged
Sequence.
In the embodiment shown in fig. 1, the order from big to small according to the frequency performance number being obtained, will
Corresponding frequency is ranked up.In the embodiment shown in Figure 2, according to the frequency power being obtained from big
To little order, corresponding frequency is ranked up.By being ranked up to frequency performance number, Ke Yi
During choosing candidate's frequency, once the actual frequency performance number of wherein one frequency is less than predetermined power valve
Value, that is, stop choosing candidate's frequency, need not the frequency power of follow-up frequency be calculated, therefore again
The speed of frequency search can be improved further.
It should be noted that in the embodiment shown in Figure 2, it is above-mentioned right that step a, b and c are referred to
The corresponding description of embodiment shown in Fig. 1 is implemented, and here is omitted.
It should be noted that in the embodiment of the present invention, described UE include but is not limited to mobile phone, notebook,
Panel computer and vehicle-mounted computer etc. are suitable to computer equipment used in movement or portable equipment.Described
UE can be communicated with base station, and described communication includes receiving the signal of base station transmission and sends to base station
Signal etc..
It should be noted that the frequency searching method of UE described in the application embodiment of the present invention, described UE
Can search the frequency at least one frequency range under the corresponding communication pattern to described frequency search instruction
Rope, when needs are to the frequency in other frequency ranges under described communication pattern, and under other communication patterns not
When scanning for the frequency in frequency range, need to reset described frequency search instruction, recycle this
The frequency searching method of UE described in bright embodiment carries out frequency search.
By the above as can be seen that in the embodiment of the present invention, the frequency searching method of described user terminal,
Receive the wireless signal of at least corresponding two frequency bins by controlling UE according to pre-set bandwidths in Preset Time,
Such that it is able to multiple frequency parallel measurements, effectively improve the speed of frequency search.And, to described
When frequency measures, it is to change the signal receiving in time domain to measure to frequency domain, therefore permissible
Reduce the impact that time domain interference produces to frequency measurement, improve the accuracy of frequency search.
In order that those skilled in the art more fully understand and realize the present invention, below to above-mentioned user terminal
The corresponding user terminal of frequency searching method be described in detail.
As shown in figure 3, embodiments providing a kind of UE 30.Described UE 30 can include：
Receiving unit 31, processing unit 32 and selection unit 33.
Specifically, described receiving unit 31 is suitable to receive frequency search instruction, described frequency search instruction bag
Include：The information of wireless signal to be received.Described processing unit 32 is suitable to according to described frequency search instruction,
Receiving according to pre-set bandwidths of described user terminal is controlled in described wireless signal to be received, at least to correspond to two
The wireless signal of individual frequency；Fourier transformation is carried out respectively to the wireless signal receiving；According to Fourier
The range value of the frequency corresponding with received wireless signal obtaining after conversion, calculates corresponding respectively
Frequency performance number.Described selection unit 33 will be more than predetermined power threshold value in calculated frequency performance number
Frequency as candidate's frequency.
Wherein, in the frequency search instruction that described receiving unit 31 receives, described wireless signal to be received
Information can include：The communication mode information of wireless signal to be received, and wireless communication to be received
Number band information.Described processing unit 32 can be using the maximum bandwidth of described radio circuit as described pre-
If bandwidth.
In being embodied as, the described frequency search instruction that received according to receiving unit 31, described process
It is described waiting that unit 32 can control radio circuit only to receive once according to pre-set bandwidths within the default time
The wireless signal of at least corresponding two frequency bins in the wireless signal received, and the wireless signal receiving is carried out
Process, you can obtain corresponding candidate's frequency.Described processing unit 32 can also control radio circuit pre-
If time in receive according to pre-set bandwidths and in wireless signal to be received described in n times, at least correspond to two frequencies
The wireless signal of point, now described processing unit 32 need to repeat until reach preset times N, and right
The wireless signal receiving every time is all processed.
As shown in figure 4, when described processing unit 32 repeats until when reaching preset times N, relatively
UE 30 shown in Fig. 3, except described receiving unit 41, processing unit 42 and choose unit 43
Outward, described UE 40 can also include：Computing unit 44, is suitable to each frequency calculated to each time
Frequency performance number respectively averaged, as the actual frequency performance number of described frequency.
In being embodied as, the either UE 30 shown in Fig. 3, or the UE shown in Fig. 4 40,
All can also include：Sequencing unit 45, is suitable to the order from big to small according to the frequency performance number being obtained,
Corresponding frequency is ranked up.
It should be noted that in the embodiment of the present invention, described UE include but is not limited to mobile phone, notebook,
Panel computer and vehicle-mounted computer etc. are suitable to computer equipment used in movement or portable equipment.Described
UE can be communicated with base station, and described communication includes receiving the signal of base station transmission and sends to base station
Signal etc..
By the above as can be seen that UE in the embodiment of the present invention, controlled by processing unit 32 or 42
UE processed receives the wireless signal of at least corresponding two frequency bins in Preset Time according to pre-set bandwidths, thus can
To multiple frequency parallel measurements, to effectively improve the speed of frequency search.And, described frequency is being entered
During row measurement, it is to change the signal receiving in time domain to measure to frequency domain, when therefore can reduce
The impact that domain interference produces to frequency measurement, improves the accuracy of frequency search.
One of ordinary skill in the art will appreciate that all or part step in the various methods of above-described embodiment
Suddenly the program that can be by complete come the hardware to instruct correlation, and this program can be stored in a computer can
Read in storage medium, storage medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (10)
1. a kind of frequency searching method of user terminal is it is characterised in that include：
Step a, receives frequency search instruction, and described frequency search instruction includes：Wireless signal to be received
Information；
Step b, according to described frequency search instruction, controls described user terminal according to pre- in Preset Time
If bandwidth, receive the wireless signal of at least corresponding two frequency bins in described wireless signal to be received；Docking
The wireless signal receiving carries out Fourier transformation respectively；According to obtain after Fourier transformation with received
The corresponding frequency of wireless signal range value, calculate corresponding frequency performance number respectively；
Step c, using the frequency being more than predetermined power threshold value in calculated frequency performance number as candidate's frequency
Point.
2. the frequency searching method of user terminal as claimed in claim 1 is it is characterised in that repeat step
Rapid b reaches preset times；
Also include：
Frequency performance number averaged respectively to each each frequency calculated, as described frequency
The actual frequency performance number of point.
3. the frequency searching method of user terminal as claimed in claim 1 or 2 is it is characterised in that executing
Before step c, also include：
According to the frequency performance number being obtained order from big to small, corresponding frequency is ranked up.
4. the frequency searching method of user terminal as claimed in claim 1 is it is characterised in that described to be received
The information of wireless signal include：The communication mode information of wireless signal to be received, and nothing to be received
The band information of line signal.
5. the frequency searching method of user terminal as claimed in claim 1 is it is characterised in that described default band
The maximum bandwidth of a width of described user terminal radio circuit.
6. a kind of user terminal is it is characterised in that include：
Receiving unit, is suitable to receive frequency search instruction, described frequency search instruction includes：To be received
The information of wireless signal；
Processing unit, is suitable to according to described frequency search instruction, controls described user terminal in Preset Time
The interior wireless communication receiving at least corresponding two frequency bins in described wireless signal to be received according to pre-set bandwidths
Number；Fourier transformation is carried out respectively to the wireless signal receiving；According to obtain after Fourier transformation with
The range value of the corresponding frequency of received wireless signal, calculates corresponding performance number respectively；
Choose unit, be suitable to make the frequency being more than predetermined power threshold value in calculated frequency performance number
For candidate's frequency.
7. user terminal as claimed in claim 6 is it is characterised in that described processing unit is suitable to when default
Interior, receive according to pre-set bandwidths and in described wireless signal to be received, at least correspond to the wireless of two frequency bins
The number of times of signal, during less than preset times, repeats until reaching preset times；
Also include：
Computing unit, is suitable to the frequency performance number of each each frequency calculated is asked for averagely respectively
Value, as the actual frequency performance number of described frequency.
8. user terminal as claimed in claims 6 or 7 is it is characterised in that also include：Sequencing unit, fits
In the order from big to small according to the frequency performance number being obtained, by being ranked up of corresponding frequency.
9. user terminal as claimed in claim 6 is it is characterised in that the frequency that described receiving unit receives is searched
In Suo Zhiling, the information of described wireless signal to be received includes：The communication mould of wireless signal to be received
Formula information, and the band information of wireless signal to be received.
10. user terminal as claimed in claim 6 is it is characterised in that described processing unit is by described radio frequency
The maximum bandwidth of circuit is as described pre-set bandwidths.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108235408A (en) * | 2018-02-23 | 2018-06-29 | 青岛海信移动通信技术股份有限公司 | A kind of method for searching network, device and terminal |
| CN108810923A (en) * | 2017-05-04 | 2018-11-13 | 展讯通信（上海）有限公司 | AFH interferes the judgment method and device, computer readable storage medium, receiver of frequency point |
| CN110290572A (en) * | 2019-07-19 | 2019-09-27 | 上海创远仪器技术股份有限公司 | The method and corresponding system of cell fast search are realized in LTE system |
| CN111654897A (en) * | 2020-05-27 | 2020-09-11 | Oppo广东移动通信有限公司 | Frequency searching method, frequency searching device, terminal equipment and computer readable storage medium |
| CN112654076A (en) * | 2020-12-24 | 2021-04-13 | 三川智慧科技股份有限公司 | 5G network frequency point access method |
| CN114727352A (en) * | 2022-04-07 | 2022-07-08 | 南京大鱼半导体有限公司 | Information transmission method and device, storage medium and electronic equipment |
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| CN111654897B (en) * | 2020-05-27 | 2022-04-15 | Oppo广东移动通信有限公司 | Frequency searching method, frequency searching device, terminal equipment and computer readable storage medium |
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