CN106304273A - Mobile terminal small region search method and device - Google Patents
Mobile terminal small region search method and device Download PDFInfo
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- CN106304273A CN106304273A CN201510368143.2A CN201510368143A CN106304273A CN 106304273 A CN106304273 A CN 106304273A CN 201510368143 A CN201510368143 A CN 201510368143A CN 106304273 A CN106304273 A CN 106304273A
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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 kind of mobile terminal small region search method and device, described small region search method includes: receive the frequency to be measured that network side sends；Calculate the signal strength values of all frequencies to be measured, select the top n frequency to be measured that signal strength values is maximum；Send additional issue to main system and measure time slot request, when receiving the measurement time slot of described main system additional issue, according to signal strength values order from big to small, on the frequency N number of to be measured selected, carry out cell searching successively.Use described method and device, it is possible to quickly select the community that signal quality is optimum.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of mobile terminal small region search method and device.
Background technology
Long Term Evolution (Long Term Evolution, LTE) communication standard is moving communicating field master now
One of quasi-4G standard pushed away.LTE mobile terminal in existing market generally support GSM, GPRS, EDGE,
The plurality of communication schemes such as CDMA and LTE.
LTE mobile terminal is in use, it may appear that often toggle between heterogeneous networks pattern
Situation.Such as, user is when taking phone, and LTE mobile terminal is in GSM network pattern, works as user
When being linked into RAN network, LTE mobile terminal is in LTE network pattern.
In order to accomplish being switched fast between various pattern, LTE mobile terminal need to be measured from mould under holotype
The signal of formula.Wherein: the network schemer that mobile terminal is presently in is referred to as holotype, other network moulds
Formula is referred to as from pattern.Such as, LTE mobile terminal is currently at GSM network pattern, then GSM network
Pattern is referred to as holotype, and LTE network pattern is referred to as from pattern.
In the prior art, when the holotype of LTE mobile terminal is non-LTE network pattern, LTE moves
The LTE frequency point issuing network side that terminal is interrupted synchronizes, measures.As a example by China Mobile, network
The LTE frequency point number that side issues at most can be 8, the frequency that LTE mobile terminal issues according to network side
8 frequencies are synchronized, measure by order successively.
But, when LTE mobile terminal is in non-LTE holotype connection status, if LTE frequency point to be measured
Too much, the most multiple frequency measurement results all report the required time longer, are receiving all frequencies
Switch again after measurement result so that the overlong time of community switching.If surveying in all LTE frequency point to be measured
Amount result all reports and carries out community switching before, then may cause being switched to signal quality is not optimum
Community.
Summary of the invention
The problem that the embodiment of the present invention solves is the problem of the community the most quickly selecting signal quality optimum.
For solving the problems referred to above, the embodiment of the present invention provides a kind of mobile terminal small region search method, including:
The frequency to be measured that network side sends is received within the current search cycle；
Calculating the signal strength values of all frequencies to be measured, the top n selecting signal strength values maximum is treated
Measure frequency；
Send additional issue to main system and measure time slot request, when the measurement time slot receiving the additional issue of described main system
Time, according to signal strength values order from big to small, enterprising at the frequency N number of to be measured selected successively
Row cell searching.
Optionally, described mobile terminal small region search method also includes: within next search cycle, calculates
The signal strength values of other frequencies to be measured in addition to the frequency to be measured searching community.
Optionally, the number measuring time slot of described main system additional issue is less than or equal to 30.
Optionally, the signal strength values of all frequencies to be measured of described calculating, including:
Receive the reference signal that all frequencies to be measured are corresponding；
Described reference signal is carried out relevant peaks calculating with default master sync signal respectively, obtains relevant peaks
Value.
Optionally, the signal strength values of all frequencies to be measured of described calculating, including: calculate all to be measured
The received signal strength indicator value of amount frequency.
Optionally, the received signal strength indicator value of all frequencies to be measured of described calculating, including: use
Formula RSSI=SUM (I2+Q2) calculating described received signal strength indicator value, wherein: RSSI is for receiving letter
Number strength indicator value.
Optionally, the span of N is: 0 ＜ N≤3.
The embodiment of the present invention additionally provides a kind of mobile terminal cell search apparatus, including:
Receive unit, for receiving the frequency to be measured that network side sends within the current search cycle；
Computing unit, for calculating the signal strength values of all frequencies to be measured；
Choose unit, for selecting the top n frequency to be measured that signal strength values is maximum；
Cell search unit, for when receiving the measurement time slot of described main system additional issue, according to signal
Intensity level order from big to small, carries out cell searching successively on the frequency N number of to be measured selected.
Optionally, described computing unit is additionally operable to: within next search cycle, calculates except searching little
The signal strength values of other frequencies to be measured outside the frequency to be measured in district.
Optionally, described computing unit is used for: by reference corresponding for the frequency all to be measured that receives with
Step signal carries out relevant peaks calculating with default master sync signal respectively, obtains correlation peak.
Optionally, described computing unit is for calculating the received signal strength indicator value of all frequencies to be measured.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantage that
After receiving the frequency to be measured that network side sends, according to the signal intensity that frequency to be measured is corresponding
Frequency to be measured is ranked up by value, the frequency N number of to be measured that select-out signal intensity level is maximum.According to letter
Number intensity level order from big to small, preferentially searches for community on the maximum frequency to be measured of signal strength values.
Owing to frequency to be measured being ranked up previously according to signal strength values, therefore can quickly select signal matter
The community that amount is optimum.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of mobile terminal small region search method in the embodiment of the present invention；
Fig. 2 is that a kind of mobile terminal small region search method in the embodiment of the present invention performs sequential chart；
Fig. 3 is that the another kind of mobile terminal small region search method in the embodiment of the present invention performs sequential chart；
Fig. 4 is the structural representation of a kind of mobile terminal cell search apparatus in the embodiment of the present invention.
Detailed description of the invention
In prior art, when LTE mobile terminal is in non-LTE holotype connection status, if to be measured
LTE frequency point too much, the most multiple frequency measurement results all report the required time longer, are receiving
Switch again after the measurement result of all frequencies so that the overlong time of community switching.If all to be measured
LTE frequency point measurement result all report and carry out community switching before, then may cause being switched to signal matter
Amount is not optimum community.
In embodiments of the present invention, after receiving the frequency to be measured that network side sends, according to be measured
Frequency to be measured is ranked up by the signal strength values that frequency is corresponding, maximum N number of of select-out signal intensity level
Frequency to be measured.According to signal strength values order from big to small, preferentially in maximum the treating of signal strength values
Measure and on frequency, search for community.Owing to frequency to be measured being ranked up previously according to signal strength values, because of
This can quickly select the community that signal quality is optimum.
Understandable for enabling the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent from, knot below
Close accompanying drawing the specific embodiment of the present invention is described in detail.
With reference to Fig. 1, give a kind of mobile terminal small region search method in the embodiment of the present invention, below lead to
Cross concrete steps to be described in detail.
Step S101, receives the frequency to be measured that network side sends.
In being embodied as, mobile terminal, when being in the connection mode of holotype, generally takes out a part
Time carries out the operations such as the network measure of other network schemers, guarantees when mobile terminal is switched to other nets
Seriality during network pattern.Therefore, when mobile terminal is in the connection mode of holotype, can receive
The frequency list to be measured of other network schemers that network side sends, and to the frequency to be measured row received
Frequency to be measured in table performs network measure operation.
Such as, mobile terminal supports TD-SCDMA network pattern and TD-LTE network schemer.Mobile
Terminal is currently at the connection mode of TD-SCDMA holotype, then TD-SCDMA system can be distributed
To the time slot that LTE system is certain so that LTE system can carry out the operations such as the frequency measurement of necessity.
In embodiments of the present invention, after receiving the frequency list to be measured that network side sends, not
It is directly successively frequency to be measured to be measured according to the frequency order received, and is carried out step
S102。
Step S102, calculates the signal strength values of all frequencies to be measured.
In being embodied as, can first calculate the frequency all to be measured in the frequency list to be measured got
The signal strength values of point.
In embodiments of the present invention, the signal strength values of each frequency to be measured can be the phase that each frequency is corresponding
Close peak value, it is also possible to for received signal strength indicator value (the Received Signal Strength that each frequency is corresponding
Indication, RSSI), it is also possible to the parameter of frequency signal strength values to be measured can be characterized for other, this
Place does not repeats.
In an embodiment of the present invention, synchronization relevant peaks method is used to calculate the letter of all frequencies to be measured
Number intensity level.By preferable with this locality main synchronization for reference sync signal corresponding for the frequency to be measured received
Signal (Primary Synchronization Signal, PSS) carries out fast Fourier (Fast Fourier
Transformation, FFT) calculate, the value obtained is correlation peak.
In an alternative embodiment of the invention, the method by directly synchronizing calculates all frequencies to be measured
Correlation peak, calculates the correlation peak of frequency to be measured by formula (1):
Wherein, CuM () is local preferably PSS matrix, C'uM () is the conjugate matrices of PSS matrix,
For the signal received, m is sequence length, and (u i) is correlation peak to Corr.
In an embodiment of the present invention, the signal strength values of frequency to be measured is RSSI, passes through formula
RSSI=SUM(I2+Q2) calculate described received signal strength indicator value.
In embodiments of the present invention, after the signal strength values calculating all frequencies to be measured, can hold
Row step S103.
In actual applications, the method by calculating the signal strength values that RSSI obtains frequency to be measured is transported
Calculate speed, but when there is interference noise, the situation easily producing erroneous judgement occurs, and accuracy is less than
Use the method synchronizing the signal strength values that relevant peaks obtains frequency to be measured.Therefore, it can according to reality
The application scenarios method that selects to calculate frequency signal strength values to be measured.When time performance is required relatively
Gao Shi, can obtain the signal strength values of frequency to be measured by calculating RSSI；When to precise requirements
Time higher, the signal strength values synchronizing relevant peaks acquisition frequency to be measured can be used.
Step S103, selects the top n frequency to be measured that signal strength values is maximum.
In being embodied as, can be to the signal intensity of each frequency to be measured calculated in step S102
Value is ranked up, and therefrom selects the top n frequency to be measured that signal strength values is maximum.
In embodiments of the present invention, when the signal strength values of frequency to be measured is characterized by correlation peak, choosing
Take the top n frequency to be measured that correlation peak is maximum；When the signal strength values of frequency to be measured is by receiving letter
When number strength indicator value characterizes, choose the top n frequency to be measured that received signal strength indicator value is maximum.
Step S104, sends additional issue to main system and measures time slot request.
In embodiments of the present invention, step S102～step S103 can regularly be performed.
Such as, frequency the most to be measured sequence is performed every 30s.Frequency to be measured is being sorted, choosing
After going out the frequency to be measured that top n signal strength values is maximum, additional issue can be sent to current main system and survey
The request of amount gap (gap).Main system, can be according to working as after the request receiving additional issue measurement gap
Business operation performed by before, judges whether to issue additional measurement gap.Wherein, main system refers to mobile
The system that the current holotype of terminal is corresponding, such as, the current holotype of mobile terminal is TDS-CDMA, then
Main system is TDS-CDMA system.
Step S105, when receiving the measurement time slot of main system additional issue, according to signal strength values from big to small
Order, on the frequency N number of to be measured selected, carry out cell searching successively.
In being embodied as, when main system judges that the current business performed can issue additional measurement gap, increase
Send out and measure gap.In order to not affect the regular traffic of main system, the number of the measurement gap of main system additional issue is not
Can be too much.
In embodiments of the present invention, the number measuring gap can be less than 30.Measure the number of gap
Can be set according to actual application scenarios, as long as less than or equal to 30.Such as, gap is measured
Number be 30.
In actual applications, the holotype of non-LTE in connected state, every about 500ms is generally
LTE pattern is distributed one and is measured gap.Therefore, the measurement gap that the holotype of non-LTE issues in 5S
Number is about 10, the measurement gap issued in 15s about 30, the measurement gap issued in 30s
It is about 60.When the frequency to be measured of LTE pattern is more, such as, frequency number to be measured is 8
Time, within the 5s time that the current search cycle starts, if only issuing 10 to measure gap, then possibly cannot
Complete the signal strength values of 8 frequencies to be measured is all calculated.
Therefore, in embodiments of the present invention, within the 5s time that the current search cycle starts, right for completing
All frequencies to be measured carry out signal strength values calculating.Therefore, the measurement gap that the holotype of non-LTE issues
Number can be more than or equal to 2 × M, and wherein M is frequency number to be measured.Such as, M=8, then front
The holotype of the non-LTE of 5s is issued additional at least 16 and is measured gap, has enabled to 8 frequencies to be measured
The signal strength values of point calculates.
In embodiments of the present invention, the measurement of additional issue can be set according to the disposal ability of mobile terminal
The time range of gap, i.e. determines and in how many seconds, completes to measure the additional issue of gap before the current search cycle,
Enable to meet and all frequencies to be measured are completed sequence to top n signal strength values therein
Big frequency to be measured carries out cell searching.In an embodiment of the present invention, non-LTE holotype is currently
In the front 5s that search cycle starts, gap is measured in additional issue 30.In an alternative embodiment of the invention, currently
In the front 10s that search cycle starts, gap is measured in additional issue 30.
In being embodied as, after selecting the frequency to be measured that top n signal strength values is maximum, permissible
According to the size order of signal strength values calculated in step S102, and step S102～step
S103 is remaining measurement gap number in having performed the rear current search cycle, at the frequency to be measured selected
Cell search is performed on Dian.
In embodiments of the present invention, N can have been pre-estimated according to the cell searching ability of mobile terminal
Measurement gap number needed for individual frequency to be measured, selects to carry out community on frequency to be measured with this and searches
The method of rope.
When within the current search cycle, remaining measurement gap number is less, such as, measurement gap number is estimated
When can only meet the cell searching of one or two frequency to be measured, can according to signal strength values from greatly to
Little order, preferentially carries out cell searching on the frequency to be measured of signal strength values maximum.When at signal
When having searched on the frequency to be measured that intensity level is maximum, no matter Search Results is for searching community or not
Search community, all can judge whether at signal strength values according to remaining measurement gap number
Cell searching is carried out on two big frequencies to be measured.Remaining measurement gap number within the current search cycle
When being enough to that a frequency to be measured is realized cell search, to second largest the treating of signal strength values
Measure frequency and carry out cell searching.The like, until remaining measurement gap number is less, it is impossible to complete
A paired frequency to be measured carries out terminating operation during a cell searching.
Such as, select front 3 frequencies to be measured that signal strength values is maximum, frequency 1 the most to be measured,
Frequency 2 to be measured and frequency to be measured 3.Wherein, the signal strength values of frequency 1 to be measured is maximum, treats
The signal strength values measuring frequency 3 is minimum.According to the search capability of mobile terminal, estimate one to be measured
Amount frequency completes cell searching needs 5 to measure gap, remaining measurement gap number in the current search cycle
Being 8, remaining measurement gap number is less.Therefore, it can first frequency 1 to be measured be carried out community
Search.
When finding community on frequency 1 to be measured, community may be found to be spent on frequency 1 to be measured
The duration taken is less, and such as, the duration of cost is only 3 gap, now, complete to frequency 1 to be measured
After becoming cell searching, there remains 5 and measure gap, frequency 2 to be measured can be carried out cell searching.?
Carry out cell searching on frequency 2 to be measured, during search, measure gap, then in the current search cycle for a length of 5
Do not have remaining measurement gap to use, therefore, terminate cell search.
It is understood that also likely to be present the duration finding community to be spent on frequency 1 to be measured relatively
Many situations, such as, time a length of 6 gap of cost, now, frequency 1 to be measured is completed community
After search, there remains 2 and measure gap, possibly cannot complete frequency 2 to be measured is carried out cell searching,
Therefore, search operation is terminated.
In embodiments of the present invention, when within the current search cycle, remaining measurement gap number is more, example
As, when estimating the cell searching that measurement gap number can meet more than three frequencies to be measured, can be right
The top n frequency to be measured alternately cell searching selected.
Such as, select 3 frequencies to be measured, be followed successively by frequency 1～3 to be measured, the most remaining measurement
The distribution of gap can be: measures gap for first and distributes to frequency 1 to be measured, measures gap for second and divide
Dispensing frequency to be measured 2, measures gap for the 3rd and distributes to frequency 3 to be measured.Owing to frequency to be measured is complete
Measurement gap number needed for becoming cell searching is the most multiple, therefore, measures gap for the 4th and distributes to treat
Measure frequency 1, measure gap for the 5th and distribute to frequency 2 to be measured, measure gap for the 6th and distribute to treat
Measure frequency 3, by that analogy, until the cell searching on frequency 1～3 to be measured terminates.
In embodiments of the present invention, after step S105 has performed, can be to having searched community
Frequency to be measured be tracked operation.Other search cycles after the current search cycle, it is only and works as
Before searched the frequency point allocation to be measured of community a small amount of measurement gap do tracking measurement, it is ensured that search
The frequency to be measured of Suo Dao community does not falls to net.
Such as, within the current search cycle, frequency 1 to be measured searches community, then searches at next
In the rope cycle, according to the net synchronization capability of mobile terminal, according to the duration measured between gap, for be measured
Frequency 1 distributes one or more and measures gap for tracking measurement.
In embodiments of the present invention, within the next search cycle, at the letter calculating all frequencies to be measured
During number intensity level, can frequency to be measured to other in addition to the frequency to be measured searching community
Signal strength values is ranked up, and only need to be tracked the frequency to be measured searching community, and nothing
Again the frequency to be measured searching community in the current search cycle need to be carried out signal strength values calculating.
Such as, within the current search cycle, frequency 1 to be measured finds community, then search at next
When carrying out frequency signal strength values to be measured calculating in the cycle, only need to calculate frequency 2～7 correspondence to be measured
The signal strength values of frequency to be measured, distributes one or more for frequency 1 to be measured and measures gap use
In tracking measurement, and without again frequency 1 to be measured being carried out signal strength values calculating.
With reference to Fig. 2, give the sequential chart of mobile terminal cell searching flow process in one embodiment of the invention.
Within each search cycle, main system is all distributed 30 measurement gap and is used for carrying out LTE network mould
The cell searching of formula, mobile terminal receives existence 8 in the frequency list to be measured that network side sends and treats
Measure frequency, time needed for calculating each frequency signal strength values to be measured, measure gap, to each for a length of 2
It is 5 measurement gap that frequency to be measured carries out cell searching required time.
The current search cycle is t0～t2, within the current search cycle, t0～t1In the moment, measure gap1～16 and be used for
Calculate the signal strength values of 8 frequencies to be measured respectively and be ranked up.After having sorted, select-out signal
Two frequencies to be measured that intensity level is maximum, frequency 1 the most to be measured and frequency to be measured 2.At t1～t2
In the moment, measure gap17～26 and be used for respectively frequency 1 to be measured and frequency to be measured 2 being carried out cell searching,
And all search community on frequency 1 to be measured and frequency to be measured 2.Mobile terminal is in remaining measurement
Gap27～30 does not perform to measure operation.
Next search cycle is t3～t5, within next search cycle, t3～t4Moment, due in current search week
In phase, frequency 1 to be measured and frequency to be measured 2 all find community, therefore without to frequency 1 He to be measured
Frequency 2 to be measured carries out signal strength values calculating, only remaining frequency 3～8 to be measured need to be carried out signal
Intensity level calculates, and i.e. has only to 12 measurement gap and can complete the sequence to frequency to be measured, selects
Frequency to be measured be frequency 3 to be measured and frequency to be measured 4, at t4～t5In the moment, measure gap13～22
For frequency 3 and 4 to be measured is carried out cell searching, remaining part measured in gap can be used
In frequency 1 to be measured and frequency to be measured 2 being tracked measurement.
It is understood that in fig. 2, in next search cycle, calculating frequency 3～8 to be measured
During signal strength values, have employed continuous 12 and measure gap.In actual applications, for avoiding having searched for
Frequency to be measured 1 and frequency to be measured 2 to community fall net, can calculate frequency 3～8 to be measured
During signal strength values, being separated out of interruption measure gap for frequency 1 to be measured and frequency to be measured 2 with
Track is measured.
For example, referring to Fig. 3, measure gap1～2 and be used for calculating the signal strength values of frequency 3 to be measured, survey
Amount gap3～4, for calculating the signal strength values of frequency 4 to be measured, measures gap7～8 and is used for calculating to be measured
The signal strength values of amount frequency 5, measures gap9～10 and is used for calculating the signal strength values of frequency 6 to be measured,
Measure gap13～14 for calculating the signal strength values of frequency 7 to be measured, measure gap15～16 by based on
Calculate the signal strength values of frequency 8 to be measured, measure gap5～6,11～12,17～18,24～25 for right
The frequency to be measured 1 and the frequency to be measured 2 that have searched community are tracked measuring, measurement gap19～23,
26～30 for carrying out cell searching to frequency 3 to be measured and frequency to be measured 4.
It is understood that in actual applications, it is also possible to there is other measurement gap distribution method,
The measurement gap of main system additional issue is allocated, does not repeats.
As can be seen here, the mobile terminal small region search method provided in the above embodiment of the present invention, each
Can quickly search out the frequency to be measured that signal strength values is the strongest in the individual search cycle, and find
The strongest frequency to be measured of signal strength values on carry out cell searching.For having found the to be measured of community
Frequency, in the search cycle later, only arranges to measure gap and is used for tracking measurement, without going again
Carry out signal strength values calculating and sequence, so that other frequency to be measured can also carry out community
Search.
With reference to Fig. 4, embodiments provide a kind of mobile terminal cell search apparatus 40, including:
Receive unit 401, computing unit 402, choose unit 403 and cell search unit 404, wherein:
Receive unit 401, for receiving the frequency to be measured that network side sends within the current search cycle；
Computing unit 402, for calculating the signal strength values of all frequencies to be measured；
Choose unit 403, for selecting the top n frequency to be measured that signal strength values is maximum；
Cell search unit 404, for when receiving the measurement time slot of described main system additional issue, according to letter
Number intensity level order from big to small, carries out cell searching successively on the frequency N number of to be measured selected.
In being embodied as, described computing unit 402 can be also used for: within next search cycle, meter
The signal strength values of the calculation other frequencies to be measured in addition to the frequency to be measured searching community.
In being embodied as, described computing unit 402 may be used for: the frequency all to be measured that will receive
The reference sync signal that point is corresponding carries out relevant peaks calculating with default master sync signal respectively, is correlated with
Peak value.
In being embodied as, described computing unit 402 may be used for calculating the reception of all frequencies to be measured
Signal strength indication value.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Suddenly the program that can be by completes to instruct relevant hardware, and this program can be stored in a computer can
Reading in storage medium, storage medium may include that ROM, RAM, disk or CD etc..
Although present disclosure is as above, but 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
The scope of protecting should be as the criterion with claim limited range.
Claims (11)
1. a mobile terminal small region search method, it is characterised in that including:
The frequency to be measured that network side sends is received within the current search cycle；
Calculating the signal strength values of all frequencies to be measured, the top n selecting signal strength values maximum is to be measured
Frequency；
Send additional issue to main system and measure time slot request, when receiving the measurement time slot of described main system additional issue,
According to signal strength values order from big to small, carry out little successively on the frequency N number of to be measured selected
Area searching.
2. mobile terminal small region search method as claimed in claim 1, it is characterised in that also include: under
In one search cycle, the calculating other frequencies to be measured in addition to the frequency to be measured searching community
Signal strength values.
3. mobile terminal small region search method as claimed in claim 1, it is characterised in that described main system increases
The number measuring time slot sent out is less than or equal to 30.
4. mobile terminal small region search method as claimed in claim 1, it is characterised in that described calculating is owned
The signal strength values of frequency to be measured, including:
Receive the reference signal that all frequencies to be measured are corresponding；
Described reference signal is carried out relevant peaks calculating with default master sync signal respectively, obtains correlation peak.
5. mobile terminal small region search method as claimed in claim 1, it is characterised in that described calculating is owned
The signal strength values of frequency to be measured, including: calculate the received signal strength indicator of all frequencies to be measured
Value.
6. mobile terminal small region search method as claimed in claim 5, it is characterised in that described calculating is owned
The received signal strength indicator value of frequency to be measured, including:
Use formula RSSI=SUM (I2+Q2) calculate described received signal strength indicator value, wherein: RSSI is for connecing
Receive signal strength indication value.
7. mobile terminal small region search method as claimed in claim 1, it is characterised in that the span of N
For: 0 ＜ N≤3.
8. a mobile terminal cell search apparatus, it is characterised in that including:
Receive unit, for receiving the frequency to be measured that network side sends within the current search cycle；
Computing unit, for calculating the signal strength values of all frequencies to be measured；
Choose unit, for selecting the top n frequency to be measured that signal strength values is maximum；
Cell search unit, for when receiving the measurement time slot of described main system additional issue, according to signal intensity
Value order from big to small, carries out cell searching successively on the frequency N number of to be measured selected.
9. mobile terminal cell search apparatus as claimed in claim 8, it is characterised in that described computing unit
It is additionally operable to: within next search cycle, calculates other in addition to the frequency to be measured searching community
The signal strength values of frequency to be measured.
10. mobile terminal cell search apparatus as claimed in claim 8, it is characterised in that described computing unit
For: reference sync signal corresponding for the frequency all to be measured that receives is main synchronization with default respectively
Signal carries out relevant peaks calculating, obtains correlation peak.
11. mobile terminal cell search apparatus as claimed in claim 8, it is characterised in that described computing unit
For calculating the received signal strength indicator value of all frequencies to be measured.
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| WO2018227631A1 (en) * | 2017-06-16 | 2018-12-20 | Oppo广东移动通信有限公司 | Wireless communication method and device |
| CN109219065A (en) * | 2017-06-30 | 2019-01-15 | 北京展讯高科通信技术有限公司 | Adjacent district detecting method, terminal and computer readable storage medium |
| CN110679180A (en) * | 2017-03-24 | 2020-01-10 | 瑞典爱立信有限公司 | Cell reselection measurement window in new radio |
| CN116582201A (en) * | 2023-07-14 | 2023-08-11 | 北京智芯微电子科技有限公司 | Channel state measuring method, receiving end and testing system |
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| CN110679180B (en) * | 2017-03-24 | 2022-04-26 | 瑞典爱立信有限公司 | Cell reselection measurement window in new radio |
| CN110679180A (en) * | 2017-03-24 | 2020-01-10 | 瑞典爱立信有限公司 | Cell reselection measurement window in new radio |
| US11146999B2 (en) | 2017-03-24 | 2021-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Cell re-selection measurement window in new radio |
| US10959140B2 (en) | 2017-06-16 | 2021-03-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless communication method and device |
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| CN109219065B (en) * | 2017-06-30 | 2021-06-25 | 北京紫光展锐通信技术有限公司 | Neighbor cell detection method, terminal and computer readable storage medium |
| CN109219065A (en) * | 2017-06-30 | 2019-01-15 | 北京展讯高科通信技术有限公司 | Adjacent district detecting method, terminal and computer readable storage medium |
| WO2023231415A1 (en) * | 2022-05-31 | 2023-12-07 | Oppo广东移动通信有限公司 | Cell measurement method, baseband chip, device, storage medium, and program product |
| US12035190B2 (en) | 2023-04-12 | 2024-07-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Cell re-selection measurement window in new radio |
| CN116582201A (en) * | 2023-07-14 | 2023-08-11 | 北京智芯微电子科技有限公司 | Channel state measuring method, receiving end and testing system |
| CN116582201B (en) * | 2023-07-14 | 2023-09-08 | 北京智芯微电子科技有限公司 | Channel state measuring method, receiving end and testing system |
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