CN106162782A - System of selection, device and the terminal of a kind of voice fallback Target cell - Google Patents
System of selection, device and the terminal of a kind of voice fallback Target cell Download PDFInfo
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Abstract
The present invention provides system of selection, device and the terminal of a kind of voice fallback Target cell, relates to communication technical field.The method includes: orders according to the redirection of network side, obtains the signal intensity of the Target cell that whole terminal speech to be searched for fall after rise；According to the signal intensity of described Target cell, from target complete community, determine the Target cell of the first predetermined number；Obtain the signal disturbing value of the Target cell of the first predetermined number；Signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech.The solution of the present invention, by the screening of the dual thresholding of estate performance is determined Target cell, improves terminal call success rate, and has ensured the voice quality of terminal, and then improves Consumer's Experience.
Description
Technical field
The present invention relates to communication technical field, particularly relate to kind of the system of selection of voice fallback Target cell, a dress
Put and terminal.
Background technology
LTE (Long Term Evolution, Long Term Evolution) as the follow-up evolution technology of 3G with its high number
According to unique technology advantages such as speed, low time delay, flexibly band width configuration, it is known as being of future generation shifting by industry
The evolution tendency of dynamic communication.Around the voice service in LTE epoch, industry proposes multiple solution,
It is available for commercial selection, such as double standby SVLTE (simultaneous voice and LTE, LTE and voice network
Synchronize to support) scheme, CSFB (Circuit Switched Fallback, circuit domain dropping) scheme and VoLTE
(Voice over LTE, LTE voice) scheme.Wherein, CSFB refers to reside in the end of LTE network
End, due to the needs of speech business, leaves LTE network and returns to 2/3G network initiation CS (Circuit
Switched, circuit switching) technology of territory audio call.Multimode list treats that CSFB mobile phone can be operated in LTE
Pattern, it is also possible to be operated in 2/3G pattern, but synchronization can only operate under a kind of pattern.
As it is shown in figure 1, CSFB call flow can be divided into three parts:
Part I, the redirection process issued by network is fallen after rise to 2/3G, sees the step (1) in figure
～(3)；
Part II, 2/3G network signal is resident and read system message in search, sees the step (4) in figure
(5)；
Part III, is to carry out audio call in 2/3G network, sees the step (6) in figure.
Wherein, for the process that terminal searching 2/3G network signal is resident, current industry implementation master
If terminal searching network issues redirects all 2G frequencies that order is specified, select the GSM of peak signal
(Global System for Mobile Communication, global system for mobile communications) community is resident,
Signal intensity uses RSSI (Received Signal Strength Indicator, the reception signal that terminal is measured
Intensity indicates) weigh.RSSI is defined as: receive broadband power, is included in the filter of receiver pulse shaping
Thermal noise in the bandwidth of ripple device definition and the noise of receiver generation.The antenna that reference point is UE measured
Port, be receive in signal bandwidth all signals (include pilot signal and data signal, adjacent area do
Disturb signal, noise signal etc.) meansigma methods of power.
But, current GSM network is through tens round dilatations, and in large scale, frequency is numerous, adds
During frequency planning, channeling is improper, frequency sets the incorrect distance caused between two co-frequency cells can not
Meet standard value, cause and exist in short-range with the interference of frequency/adjacent frequency.Owing to rssi measurement value is institute
There is signal (including pilot signal and data signal, adjacent area interference signal, noise signal etc.) power sum,
Likely occur that very well but SINR is poor (to be disturbed bigger for some adjacent frequency or the RSSI with the frequency area of coverage
Cause) situation, cause the terminal cannot be the most resident in this community.Therefore when CSFB terminal speech falls after rise
Judging according only to rssi measurement value, the GSM cell selecting the strongest RSSI is not accurate enough, if selected for
The GSM cell that RSSI is the most poor for SINR, cannot resident may cause back because of GSM cell
Fall unsuccessfully, or fall after rise successfully but because with frequency/adjacent frequency disturb cause greatly GSM voice quality poor.
Summary of the invention
It is an object of the invention to provide system of selection, device and the terminal of a kind of voice fallback Target cell, logical
Cross the screening selection of the dual thresholding to estate performance and determine Target cell, promote terminal call success rate, and
Ensure the voice quality of terminal, and then promote Consumer's Experience.
For reaching above-mentioned purpose, embodiments of the invention provide the system of selection of a kind of voice fallback Target cell,
Including:
Redirection order according to network side, obtains the Target cell of whole terminal speech falling to be searched for
Signal intensity；
According to the signal intensity of described Target cell, from target complete community, determine the first predetermined number
Target cell；
Obtain the signal disturbing value of the Target cell of the first predetermined number；
Signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines that second is pre-
If the final goal community that the Target cell of quantity falls after rise as terminal speech.
Wherein, the described redirection according to network side is ordered, and obtains what whole terminal speech to be searched for fell after rise
The step of the signal intensity of Target cell includes:
After the redirection receiving network side is ordered, determine the Target cell of whole voice fallbacks to be searched for
Frequency；
According to described frequency, search for whole Target cells；
Obtain the signal intensity of the Target cell searched.
Wherein, the described signal intensity according to described Target cell, from target complete community, determine first
The step of the Target cell of predetermined number includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Target cell equal to the 3rd predetermined number of first threshold；
According to the power of signal intensity, Target cell is ranked up, determines each described Target cell successively
Target cell as the first predetermined number.
Wherein, the described signal intensity according to described Target cell, from target complete community, determine first
The step of the Target cell of predetermined number includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Target cell equal to the 4th predetermined number of Second Threshold；
According to the power of signal intensity, Target cell is ranked up, and is grouped with preset rules, successively
Determine each group of Target cell Target cell as the first predetermined number.
Wherein, the described signal intensity according to described Target cell, from target complete community, determine first
The step of the Target cell of predetermined number includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Equal to the Target cell of the 5th predetermined number of the 3rd threshold value as the Target cell of the first predetermined number.
Wherein, the described signal disturbing value according to Target cell, from the Target cell of the first predetermined number,
Determine that the step of the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech includes:
When the signal disturbing value of the Target cell of the first predetermined number is more than or equal to four threshold values, determine institute
State the Target cell that Target cell is the second predetermined number of the first predetermined number.
Wherein, the described signal disturbing value according to Target cell, from the Target cell of the first predetermined number,
Determine that the step of the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech includes:
In the Target cell of the first predetermined number, judge that each target is little successively according to the power of signal intensity
Whether the signal disturbing value in district is more than or equal to the 5th threshold value；
Determine the signal disturbing value target that Target cell is the second predetermined number more than or equal to the 5th threshold value
Community.
Wherein, the described signal disturbing value according to Target cell, from the Target cell of the first predetermined number,
Determine that the step of the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech includes:
In the Target cell of the first predetermined number, determine, according to signal disturbing value, the mesh that signal disturbing value is the highest
Mark community is the Target cell of the second predetermined number.
For reaching above-mentioned purpose, embodiments of the invention additionally provide the selection of a kind of voice fallback Target cell
Device, including:
First acquisition module, orders for the redirection according to network side, obtains whole terminal languages to be searched for
The signal intensity of the Target cell that sound falls after rise；
First determines module, for the signal intensity according to described Target cell, from target complete community,
Determine the Target cell of the first predetermined number；
Second acquisition module, for obtaining the signal disturbing value of the Target cell of the first predetermined number；
Second determines module, for the signal disturbing value according to Target cell, from the target of the first predetermined number
In community, determine the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech.
Wherein, described first acquisition module includes:
First determines submodule, after ordering the redirection receiving network side, determines to be searched for complete
The frequency of the Target cell of portion's voice fallback；
Search submodule, for according to described frequency, searches for whole Target cells；
First obtains submodule, for obtaining the signal intensity of the Target cell searched.
Wherein, described first determines that module includes:
Second determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 3rd predetermined number of first threshold；
3rd determines submodule, for being ranked up by Target cell according to the power of signal intensity, the most really
Each described Target cell fixed is as the Target cell of the first predetermined number.
Wherein, described first determines that module includes:
4th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 4th predetermined number of Second Threshold；
5th determines submodule, for being ranked up by Target cell according to the power of signal intensity, and with in advance
If rule is grouped, determine each group of Target cell Target cell as the first predetermined number successively.
Wherein, described first determines that module includes:
6th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 5th predetermined number of the 3rd threshold value and presets as first
The Target cell of quantity.
Wherein, described second determines that module includes:
7th determines submodule, for the first predetermined number Target cell signal disturbing value more than or etc.
When four threshold values, determine the Target cell that Target cell is the second predetermined number of described first predetermined number.
Wherein, described second determines that module includes:
Judge submodule, in the Target cell of the first predetermined number, depend on according to the power of signal intensity
Whether the secondary signal disturbing value judging each Target cell is more than or equal to the 5th threshold value；
8th determines submodule, for determining that signal disturbing value more than or equal to the Target cell of the 5th threshold value is
The Target cell of the second predetermined number.
Wherein, described second determines that module includes:
9th determines submodule, in the Target cell of the first predetermined number, according to signal disturbing value,
Determine the Target cell that Target cell is the second predetermined number that signal disturbing value is the highest.
For reaching above-mentioned purpose, embodiments of the invention additionally provide a kind of terminal, including language as above
Sound falls the selection device of Target cell after rise.
Having the beneficial effect that of the technique scheme of the present invention:
The system of selection of the voice fallback Target cell of the embodiment of the present invention, on the basis of signal intensity RSSI
On consider impact when signal disturbing value SINR provides speech business to the final community selected, terminal root
First the Target cell of whole terminal speech falling to be searched for is got according to the redirection order received
Signal intensity.Certainly, RSSI meets the community of certain condition can provide good voice industry for terminal
Business, therefore, screens from the target complete community searched according to signal intensity afterwards and determines the first present count
The Target cell of amount, then, on the basis of the screening of RSSI, then carries out the screening of SINR: obtain the
The signal disturbing value of the Target cell of one predetermined number；According to the signal disturbing value obtained, in the first present count
In the Target cell of amount, screen and determine the Target cell of place's the second predetermined number, as terminal speech
The final goal community fallen after rise.So, suitable speech business is selected by the dual thresholding of RSSI+SINR
Community, it is to avoid although there is good RSSI the community of selection, but SINR is poor, can be because of cannot be resident
Cause falling after rise unsuccessfully or falling after rise successfully but cause greatly the situation of GSM voice quality difference with the interference of frequency/alien frequencies
Occur.The method improves terminal CSFB call successful rate, and has ensured the voice quality of terminal, enters
And improve Consumer's Experience.
Accompanying drawing explanation
Fig. 1 represents existing CSFB call flow diagram；
Fig. 2 represents the block diagram of the system of selection of the voice fallback Target cell of the embodiment of the present invention；
Fig. 3 represents the concrete steps figure one of the system of selection of the voice fallback Target cell of the embodiment of the present invention；
Fig. 4 represents the concrete steps figure two of the system of selection of the voice fallback Target cell of the embodiment of the present invention；
Fig. 5 represents the concrete steps figure three of the system of selection of the voice fallback Target cell of the embodiment of the present invention；
Fig. 6 represents the structural representation selecting device of the voice fallback Target cell of the embodiment of the present invention.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached
Figure and specific embodiment are described in detail.
The community that the present invention is directed to existing voice fallback is only determined by signal intensity rssi measurement value, meeting
Occur cannot resident causing falling unsuccessfully because of GSM cell, or falls successfully but because of frequency/adjacent frequency interference together
The problem causing greatly GSM voice quality difference, it is provided that the system of selection of a kind of voice fallback Target cell, logical
Cross the screening selection of the dual thresholding to estate performance and determine Target cell, promote terminal call success rate, and
Ensure the voice quality of terminal, and then promote Consumer's Experience.
As in figure 2 it is shown, the system of selection of a kind of voice fallback Target cell of the embodiment of the present invention, including:
Step 11, orders according to the redirection of network side, obtains what whole terminal speech to be searched for fell after rise
The signal intensity of Target cell；
Step 12, according to the signal intensity of described Target cell, from target complete community, determines first
The Target cell of predetermined number；
Step 13, obtains the signal disturbing value of the Target cell of the first predetermined number；
Step 14, according to the signal disturbing value of Target cell, from the Target cell of the first predetermined number,
Determine the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech.
Wherein, signal disturbing value SINR (Signal to Interference plus Noise Ration, signal with
Interference and noise ratio), SINR=Signal/ (Interference+Noise), wherein Signal: measure to having
With signal power, the signal being primarily upon and channel reporting；Interference: measure the signal or channel arrived
The power of interference signal, including the interference of other communities and the different system interference of native system；Noise: make an uproar in the end,
Relevant with concrete Measurement bandwidth and receiver noise factor.SINR can be with gauge signal power and interference/noise
The ratio of power.
In the system of selection of the voice fallback Target cell of the embodiment of the present invention, examine on the basis of RSSI
Having considered impact when SINR provides speech business to the final community selected, terminal needs to carry out speech business
Time, network side can issue redirection order to terminal, and terminal just can be according to the redirection order head received
First get the signal intensity of the Target cell that whole terminal speech to be searched for fall after rise such as step 11.Certainly,
Signal intensity RSSI meets the community of certain condition can provide good speech business for terminal, therefore,
To screen from the target complete community searched according to signal intensity such as step 12 afterwards and determine that first presets
The Target cell of quantity, Target cell quantity now is indefinite, it may be possible to filter out one or more.
Then, on the basis of the screening of RSSI, then carry out the screening of SINR.As step 13 obtains first
The signal disturbing value of the Target cell of predetermined number.Next step, if step 14 is according to the signal disturbing obtained
Value, in the Target cell of the first predetermined number, screens and determines the Target cell of place's the second predetermined number,
The final goal community fallen after rise as terminal speech.So, selected by the dual thresholding of RSSI+SINR
Select suitable speech business community, it is to avoid although there is good RSSI the community of selection, but SINR is relatively
Difference, can cause greatly GSM language because cannot resident causing falling after rise unsuccessfully or falling after rise successfully with the interference of frequency/alien frequencies
The situation of sound quality difference occurs.The method improves terminal CSFB call successful rate, and has ensured terminal
Voice quality, and then improve Consumer's Experience.
Wherein, step 11 includes:
Step 111, after the redirection receiving network side is ordered, determines whole voice fallbacks to be searched for
The frequency of Target cell；
Step 112, according to described frequency, searches for whole Target cells；
Step 113, obtains the signal intensity of the Target cell searched.
According to step 111-113, after the redirection receiving network side is ordered, it is possible to obtain redirecting life
Whole GSM frequencies of the Target cell of the voice fallback that order carries, just can search after knowing frequency
Rope, finds the community with these frequencies.Afterwards, it is thus achieved that the signal intensity of these Target cells.
So far, the signal intensity of the Target cell with applicable frequency is obtained, then first can be carried out afterwards
Secondary screening.On the basis of above-described embodiment, as it is shown on figure 3, the voice fallback target of the embodiment of the present invention
In the system of selection of community, step 12 includes:
Step 121a, according to the signal intensity of described Target cell, from target complete community, determines letter
Number intensity is more than or equal to the Target cell of the 3rd predetermined number of first threshold；
Step 122a, is ranked up Target cell according to the power of signal intensity, determines each successively
Described Target cell is as the Target cell of the first predetermined number.
Then, as step 13 obtains the signal disturbing value of the Target cell of the first predetermined number, according to signal
Interference value postsearch screening.Determine that the step 14 of the Target cell of final voice fallback includes:
Step 141a, the signal disturbing value at the Target cell of the first predetermined number is more than or equal to the 4th threshold
During value, determine the Target cell that Target cell is the second predetermined number of described first predetermined number.
In the present embodiment, preset in advance has put RSSI thresholding first threshold, to signal intensity primary dcreening operation, letter
The community of number intensity difference cannot keep the resident of terminal in the later stage or provide normal speech business, therefore first picks
Except the community of difference in signal strength, the signal intensity of remaining community both greater than or is equal to first threshold, community number
Measure and indefinite be probably one and be also likely to be multiple, it is determined that the Target cell of the 3rd predetermined number.Most
In the case of have multiple community, afterwards, these Target cells are arranged by the power according still further to signal intensity
Sequence, to the Target cell of the 3rd predetermined number, Target cell as the first predetermined number carries out secondary sieve one by one
Choosing.First the strongest for selection RSSI community is as the Target cell of the first predetermined number, and obtains this community
SINR, implementing can be to be selected this community carry out down-going synchronous and measure SINR by terminal.In advance
Preset the 4th threshold value as SINR thresholding, it is judged that whether the SINR of this community is more than or equal to the 4th threshold
Value, if this community SINR is more than or equal to the 4th threshold value, so that it may determine that this community is the second predetermined number
Target cell, as the Target cell of final voice fallback, terminal is connected with this community, the most no longer
Processing other communities, flow process terminates；If this community SINR is not greater than or equal to the 4th threshold value, should
Community is not reaching to SINR thresholding, then select press after RSSI sequence the community of time by force (second) as the
The Target cell of one predetermined number, continues above-mentioned screening process, until finding the Target cell meeting condition,
Flow process terminates.
In the above-described embodiments, it is according to the power of RSSI after sequence when carrying out postsearch screening based on SINR
Carry out one by one, if meeting during the community RSSI sequence of SINR thresholding forward, then just can be the most true
The Target cell of fixed final voice fallback, but, if comparing rearward during its RSSI sequence, then need before
To screen the more time that will consume one by one, therefore, as shown in Figure 4, in another embodiment of the present invention
In, step 12 includes:
Step 121b, according to the signal intensity of described Target cell, from target complete community, determines letter
Number intensity is more than or equal to the Target cell of the 4th predetermined number of Second Threshold；
Step 122b, is ranked up Target cell according to the power of signal intensity, and enters with preset rules
Row packet, determines each group of Target cell Target cell as the first predetermined number successively.
Then, as step 13 obtains the signal disturbing value of the Target cell of the first predetermined number, according to signal
Interference value postsearch screening.Determine that the step 14 of the Target cell of final voice fallback includes:
Step 141b, in the Target cell of the first predetermined number, sentences successively according to the power of signal intensity
Whether the signal disturbing value of disconnected each Target cell is more than or equal to the 5th threshold value；
Step 142b, determines that signal disturbing value is second to preset more than or equal to the Target cell of the 5th threshold value
The Target cell of quantity.
In the present embodiment, preset in advance has put RSSI thresholding Second Threshold, Second Threshold and first threshold
May be identical, it is also possible to different.But same, first reject difference in signal strength by default thresholding
Community, remaining cell signal strength both greater than or is equal to Second Threshold, it is determined that the mesh of the 4th predetermined number
Mark community.Afterwards, the community in the Target cell of the 4th predetermined number is entered by the power according still further to signal intensity
Row sequence, and be grouped with preset rules, determine that each group of Target cell is as the first predetermined number successively
Target cell.Preset rules can be to be grouped according to signal intensity classification, or with certain number of cells
Carrying out packet etc., arrange yet with according to power, the minimum signal strength of previous group is also greater than
Or be equal to the maximum signal of later group.Now, what the Target cell of the first predetermined number was chosen is
One group of community the most multiple in the Target cell of four predetermined numbers are screened.Certainly according to step 13, obtain
The SINR of the Target cell of the first predetermined number taken is the SINR of the multiple community of this group, implements
An ibid embodiment.Preset in advance the 5th threshold value is as SINR thresholding, according to signal in this group community
The power of intensity judges whether the signal disturbing value of each Target cell is more than or equal to the 5th threshold value successively, i.e.
From this group community, first determine whether whether the SINR of RSSI Qiang community is higher than SINR thresholding, if being more than
Or can determine that the Target cell that this community is the second predetermined number, as final voice fallback equal to the 5th threshold value
Target cell, terminal is connected with this community, the most no longer processes other communities, flow process tie
Bundle；If this community SINR is not greater than or equal to the 5th threshold value, this community is not reaching to SINR thresholding, then
After selecting to sort by RSSI in this group, the community of time strong (second) is as the Target cell of the first predetermined number,
Continue above-mentioned screening process, Ruo Gaizu community is all unable to reach SINR thresholding, then continues in next group
Searching in community, until finding the Target cell meeting condition, flow process terminates.
Two kinds of above-mentioned embodiments, in the case of meeting RSSI thresholding, are preferentially to carry out two with RSSI
Secondary screening, if it is also feasible for certainly preferentially carrying out postsearch screening with SINR, as it is shown in figure 5, at this
Invention is that in another embodiment, step 12 includes:
Step 121c, according to the signal intensity of described Target cell, from target complete community, determines letter
Number intensity more than or equal to the Target cell of the 5th predetermined number of the 3rd threshold value as the first predetermined number
Target cell.
Then, as step 13 obtains the signal disturbing value of the Target cell of the first predetermined number, according to signal
Interference value postsearch screening.Determine that the step 14 of the Target cell of final voice fallback includes:
According to signal disturbing value, step 141c, in the Target cell of the first predetermined number, determines that signal is done
Disturb the Target cell that the highest Target cell of value is the second predetermined number.
In the present embodiment, preset in advance has put RSSI thresholding the 3rd threshold value, the 3rd threshold value and first threshold
Or Second Threshold identical may be likely to difference.But same, first reject signal by default thresholding
The community of intensity difference, remaining cell signal strength both greater than or is equal to the 3rd threshold value, it is determined that the 5th presets
The Target cell of quantity, and as the Target cell of the first predetermined number.Obtain the SINR of these communities,
Namely the SINR of remaining whole communities after screening is rejected for the first time, finally selects the highest SINR's
Community is the Target cell of the second predetermined number, and as the Target cell of final voice fallback, terminal is little with this
District connects.If occurring when multiple cell has the highest identical SINR, can consider further that RSSI is strong and weak, selecting same
Time there is the community Target cell as final voice fallback of the strongest RSSI.
Wherein, the first threshold of RSSI thresholding, Second Threshold and the 3rd threshold value may be identical, but due to
Handling process is different, it is also possible to different, same, and the 4th threshold value of SINR thresholding, the 5th threshold value may
Come round and be likely to difference.
Certainly, what the dual thresholding of RSSI+SINR selected implements, except above-mentioned three kinds implement
Outside mode, other implementation on the basis of without departing from the principle of the invention, be also the present invention protect interior
Hold.
In sum, the system of selection of the voice fallback Target cell of the embodiment of the present invention, according to
The dual thresholding of RSSI+SINR selects suitable GSM cell, when can avoid selecting based on single RSSI
Very well but behind the very poor community of SINR, terminal cannot cause falling after rise unsuccessfully in this community resident to have selected RSSI
Or fall after rise successfully but because cause greatly the situation of GSM voice quality difference to occur, simultaneously with the interference of frequency/adjacent frequency
Improve terminal CSFB call successful rate, and ensured the voice quality of terminal, and then promote user's body
Test.
As shown in Figure 6, embodiments of the invention additionally provide the selection device of a kind of voice fallback Target cell,
Including:
First acquisition module 10, orders for the redirection according to network side, obtains whole ends to be searched for
The signal intensity of the Target cell of end voice fallback；
First determines module 20, for the signal intensity according to described Target cell, from target complete community
In, determine the Target cell of the first predetermined number；
Second acquisition module 30, for obtaining the signal disturbing value of the Target cell of the first predetermined number；
Second determines module 40, for the signal disturbing value according to Target cell, from the first predetermined number
In Target cell, determine the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech.
Wherein, described first acquisition module includes:
First determines submodule, after ordering the redirection receiving network side, determines to be searched for complete
The frequency of the Target cell of portion's voice fallback；
Search submodule, for according to described frequency, searches for whole Target cells；
First obtains submodule, for obtaining the signal intensity of the Target cell searched.
Wherein, described first determines that module includes:
Second determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 3rd predetermined number of first threshold；
3rd determines submodule, for being ranked up by Target cell according to the power of signal intensity, the most really
Each described Target cell fixed is as the Target cell of the first predetermined number.
Wherein, described first determines that module includes:
4th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 4th predetermined number of Second Threshold；
5th determines submodule, for being ranked up by Target cell according to the power of signal intensity, and with in advance
If rule is grouped, determine each group of Target cell Target cell as the first predetermined number successively.
Wherein, described first determines that module includes:
6th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 5th predetermined number of the 3rd threshold value and presets as first
The Target cell of quantity.
Wherein, described second determines that module includes:
7th determines submodule, for the first predetermined number Target cell signal disturbing value more than or etc.
When four threshold values, determine the Target cell that Target cell is the second predetermined number of described first predetermined number.
Wherein, described second determines that module includes:
Judge submodule, in the Target cell of the first predetermined number, depend on according to the power of signal intensity
Whether the secondary signal disturbing value judging each Target cell is more than or equal to the 5th threshold value；
8th determines submodule, for determining that signal disturbing value more than or equal to the Target cell of the 5th threshold value is
The Target cell of the second predetermined number.
Wherein, described second determines that module includes:
9th determines submodule, in the Target cell of the first predetermined number, according to signal disturbing value,
Determine the Target cell that Target cell is the second predetermined number that signal disturbing value is the highest.
The selection device of the voice fallback Target cell of the embodiment of the present invention, according to RSSI+SINR double door
Limit selects suitable GSM cell, can avoid have selected when selecting based on single RSSI RSSI fine but
Behind the community that SINR is very poor, terminal cannot this community resident cause falling after rise unsuccessfully or fall after rise successfully but because
The situation causing greatly GSM voice quality difference with the interference of frequency/adjacent frequency occurs, and improves terminal CSFB simultaneously and exhales
It is success rate, and has ensured the voice quality of terminal, and then promote Consumer's Experience.
It should be noted that this device is the device of the system of selection applying above-mentioned voice fallback Target cell,
The implementation of said method is applicable to this device, also can reach identical technique effect.
Embodiments of the invention additionally provide a kind of terminal, including voice fallback Target cell as above
Select device.
This terminal according to the dual thresholding of RSSI+SINR select suitable GSM cell, can avoid based on
Single RSSI have selected RSSI very well but behind the very poor community of SINR when selecting, terminal cannot resident this be little
District cause falling after rise unsuccessfully or fall after rise successfully but because with frequency/adjacent frequency disturb cause greatly GSM voice quality poor
Situation occur, improve terminal CSFB call successful rate simultaneously, and ensured the voice quality of terminal,
And then lifting Consumer's Experience.
It should be noted that this terminal is the terminal of the system of selection applying above-mentioned voice fallback Target cell,
The implementation of said method is applicable to this terminal, also can reach identical technique effect.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (17)
1. the system of selection of a voice fallback Target cell, it is characterised in that including:
Redirection order according to network side, obtains the Target cell of whole terminal speech falling to be searched for
Signal intensity；
According to the signal intensity of described Target cell, from target complete community, determine the first predetermined number
Target cell；
Obtain the signal disturbing value of the Target cell of the first predetermined number；
Signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines that second is pre-
If the final goal community that the Target cell of quantity falls after rise as terminal speech.
The system of selection of voice fallback Target cell the most according to claim 1, it is characterised in that institute
State the redirection order according to network side, obtain the letter of the Target cell that whole terminal speech to be searched for fall after rise
The step of number intensity includes:
After the redirection receiving network side is ordered, determine the Target cell of whole voice fallbacks to be searched for
Frequency；
According to described frequency, search for whole Target cells；
Obtain the signal intensity of the Target cell searched.
The system of selection of voice fallback Target cell the most according to claim 1, it is characterised in that
The described signal intensity according to described Target cell, from target complete community, determines the first predetermined number
The step of Target cell includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Target cell equal to the 3rd predetermined number of first threshold；
According to the power of signal intensity, Target cell is ranked up, determines each described Target cell successively
Target cell as the first predetermined number.
The system of selection of voice fallback Target cell the most according to claim 1, it is characterised in that
The described signal intensity according to described Target cell, from target complete community, determines the first predetermined number
The step of Target cell includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Target cell equal to the 4th predetermined number of Second Threshold；
According to the power of signal intensity, Target cell is ranked up, and is grouped with preset rules, successively
Determine each group of Target cell Target cell as the first predetermined number.
The system of selection of voice fallback Target cell the most according to claim 1, it is characterised in that
The described signal intensity according to described Target cell, from target complete community, determines the first predetermined number
The step of Target cell includes:
According to the signal intensity of described Target cell, from target complete community, determine signal intensity be more than or
Equal to the Target cell of the 5th predetermined number of the 3rd threshold value as the Target cell of the first predetermined number.
The system of selection of voice fallback Target cell the most according to claim 3, it is characterised in that
The described signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines that second is pre-
If the Target cell of quantity includes as the step of the final goal community that terminal speech falls after rise:
When the signal disturbing value of the Target cell of the first predetermined number is more than or equal to four threshold values, determine institute
State the Target cell that Target cell is the second predetermined number of the first predetermined number.
The system of selection of voice fallback Target cell the most according to claim 4, it is characterised in that
The described signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines that second is pre-
If the Target cell of quantity includes as the step of the final goal community that terminal speech falls after rise:
In the Target cell of the first predetermined number, judge that each target is little successively according to the power of signal intensity
Whether the signal disturbing value in district is more than or equal to the 5th threshold value；
Determine the signal disturbing value target that Target cell is the second predetermined number more than or equal to the 5th threshold value
Community.
The system of selection of voice fallback Target cell the most according to claim 5, it is characterised in that
The described signal disturbing value according to Target cell, from the Target cell of the first predetermined number, determines that second is pre-
If the Target cell of quantity includes as the step of the final goal community that terminal speech falls after rise:
In the Target cell of the first predetermined number, determine, according to signal disturbing value, the mesh that signal disturbing value is the highest
Mark community is the Target cell of the second predetermined number.
9. the selection device of a voice fallback Target cell, it is characterised in that including:
First acquisition module, orders for the redirection according to network side, obtains whole terminal languages to be searched for
The signal intensity of the Target cell that sound falls after rise；
First determines module, for the signal intensity according to described Target cell, from target complete community,
Determine the Target cell of the first predetermined number；
Second acquisition module, for obtaining the signal disturbing value of the Target cell of the first predetermined number；
Second determines module, for the signal disturbing value according to Target cell, from the target of the first predetermined number
In community, determine the final goal community that the Target cell of the second predetermined number falls after rise as terminal speech.
The selection device of voice fallback Target cell the most according to claim 9, it is characterised in that institute
State the first acquisition module to include:
First determines submodule, after ordering the redirection receiving network side, determines to be searched for complete
The frequency of the Target cell of portion's voice fallback；
Search submodule, for according to described frequency, searches for whole Target cells；
First obtains submodule, for obtaining the signal intensity of the Target cell searched.
The selection device of 11. voice fallback Target cells according to claim 9, it is characterised in that
Described first determines that module includes:
Second determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 3rd predetermined number of first threshold；
3rd determines submodule, for being ranked up by Target cell according to the power of signal intensity, the most really
Each described Target cell fixed is as the Target cell of the first predetermined number.
The selection device of 12. voice fallback Target cells according to claim 9, it is characterised in that
Described first determines that module includes:
4th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 4th predetermined number of Second Threshold；
5th determines submodule, for being ranked up by Target cell according to the power of signal intensity, and with in advance
If rule is grouped, determine each group of Target cell Target cell as the first predetermined number successively.
The selection device of 13. voice fallback Target cells according to claim 9, it is characterised in that
Described first determines that module includes:
6th determines submodule, for the signal intensity according to described Target cell, from target complete community,
Determine that signal intensity is more than or equal to the Target cell of the 5th predetermined number of the 3rd threshold value and presets as first
The Target cell of quantity.
The selection device of 14. voice fallback Target cells according to claim 11, it is characterised in that
Described second determines that module includes:
7th determines submodule, for the first predetermined number Target cell signal disturbing value more than or etc.
When four threshold values, determine the Target cell that Target cell is the second predetermined number of described first predetermined number.
The selection device of 15. voice fallback Target cells according to claim 12, it is characterised in that
Described second determines that module includes:
Judge submodule, in the Target cell of the first predetermined number, depend on according to the power of signal intensity
Whether the secondary signal disturbing value judging each Target cell is more than or equal to the 5th threshold value；
8th determines submodule, for determining that signal disturbing value more than or equal to the Target cell of the 5th threshold value is
The Target cell of the second predetermined number.
The selection device of 16. voice fallback Target cells according to claim 13, it is characterised in that
Described second determines that module includes:
9th determines submodule, in the Target cell of the first predetermined number, according to signal disturbing value,
Determine the Target cell that Target cell is the second predetermined number that signal disturbing value is the highest.
17. 1 kinds of terminals, it is characterised in that include the voice as described in any one of claim 9 to 16
Fall the selection device of Target cell after rise.
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| CN201510145643.XA CN106162782A (en) | 2015-03-30 | 2015-03-30 | System of selection, device and the terminal of a kind of voice fallback Target cell |
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| CN201510145643.XA CN106162782A (en) | 2015-03-30 | 2015-03-30 | System of selection, device and the terminal of a kind of voice fallback Target cell |
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| CN112887927A (en) * | 2021-01-20 | 2021-06-01 | 维沃移动通信有限公司 | Voice fallback method and device and user equipment |
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