CN107635260A - Circuit domain dropping CSFB reorientation methods, device, terminal and system - Google Patents
Circuit domain dropping CSFB reorientation methods, device, terminal and system Download PDFInfo
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- CN107635260A CN107635260A CN201610571773.4A CN201610571773A CN107635260A CN 107635260 A CN107635260 A CN 107635260A CN 201610571773 A CN201610571773 A CN 201610571773A CN 107635260 A CN107635260 A CN 107635260A
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- 230000000977 initiatory effect Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
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- 210000004027 cell Anatomy 0.000 description 268
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
- H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention provides a kind of circuit domain dropping CSFB reorientation methods, device, terminal and system, and CSFB business, the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals are initiated by the present invention；The redirection information that network side equipment issues is received, measures the signal value of Target cell and the secondary signal value of at least one neighbor cell indicated by redirection information；Compare the first signal value and secondary signal value, the increased neighbor cell of signal value is determined at least one neighbor cell；The comparative result of the secondary signal value of the increased neighbor cell of basis signal value and the signal value of Target cell, frequency corresponding to selection frequency corresponding with the increased neighbor cell of signal value or Target cell carries out CSFB business, solve and fail because terminal movement causes to redirect, then the problem of causing CSFB call failures, and then improve the effect of the quality of CSFB calls and the Experience Degree of user.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of circuit domain dropping CSFB reorientation methods, device, end
End and system.
Background technology
In the related art, it is logical for circuit domain dropping (Circuit Switched Fallback, referred to as CSFB)
2G, 3G adjacent area of oneself current LTE cell would generally concurrently be risen and reset by words, network side equipment as the Target cell redirected
To operation, CS speech businesses can be carried out if the signal value of the adjacent area is relatively strong.
Conversed for CSFB, when mobile terminal initiates CSFB business, network side equipment can select redirection WCDMA small
Area simultaneously redirects operation, but probably need to due to falling back to WCDMA cells from terminal originated calls to terminal and establishing to converse
The time of several seconds is wanted, during this period of time terminal has moved a certain distance so that the Target cell letter of network redirection
Number value may die down or disappear, and then cause to redirect failure and CSFB call failures.
By taking high rail mode as an example, when one is supported CSFB terminal to initiate to call in cell edge, the high speed of the terminal
Movement may result in call failure.
The schematic diagram that terminal when Fig. 1 is high-speed mobile redirects, as shown in Figure 1, it is assumed that the speed of service of high ferro is
300Km/ hours, cell A range of signal is in the region that the dotted line where WCDMA cells A surrounds, the void where WCDMA cells B
The region that line surrounds is cell B range of signal, and terminal resides in LTE A cells, initiates CSFB after train reaches A points and exhales
Cry, at this point for LTE A cells, neighboring WCDMA cell A signal value is higher, so LTE A cells can be issued end
End WCDMA cells A frequency redirects, but train is still in operation, is fallen back to from terminal originated calls to terminal
WCDMA cells, which establish call, probably needs 3 seconds, and with the speed of service of high ferro, train has been running for during this is 3 seconds
250m or so, it is assumed that now reach B points, as can be known from Fig. 1, WCDMA cells A signal value has been significantly lower than in B points
WCDMA cells B signal value, in some instances it may even be possible to which WCDMA cells A occur does not have signal, causes terminal to redirect failure, then
The call of terminal is caused to fail.
The problem of causing CSFB call failures due to there is redirection failure in moving process for above-mentioned terminal, mesh
It is preceding that there has been no effective solution.
The content of the invention
The embodiments of the invention provide a kind of CSFB reorientation methods, device, terminal and systems approach and device, with least
Solve the problems, such as that redirecting failure and causing CSFB call failures occur in moving process in terminal in correlation technique.
According to one embodiment of present invention, there is provided a kind of CSFB reorientation methods, including：CSFB business is initiated, is surveyed
Measure the first signal value of at least one neighbor cell of the current institute persistent district of terminal；Receive the redirection that network side equipment issues
Information, measure the signal value of Target cell and the second letter of at least one neighbor cell indicated by the redirection information
Number value；Compare first signal value and the secondary signal value, determine that signal value increases at least one neighbor cell
The neighbor cell added；Secondary signal value and the signal value of the Target cell according to the increased neighbor cell of the signal value
Comparative result, frequency corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell is selected to enter
The row CSFB business.
Alternatively, the secondary signal value and the signal value of the Target cell according to the increased neighbor cell of the signal value
Comparative result, select frequency corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell
The CSFB business is carried out, including：When the secondary signal value for judging the increased neighbor cell of the signal value is more than the target
During the signal value of cell, the frequency of the increased neighbor cell of the signal value is selected to carry out the CSFB business.
Alternatively, the secondary signal value and the signal value of the Target cell according to the increased neighbor cell of the signal value
Comparative result, select frequency corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell
The CSFB business is carried out, in addition to：When the secondary signal value for judging the increased neighbor cell of the signal value is less than the mesh
When marking the signal value of cell, the secondary signal value of the increased neighbor cell of the signal value and the signal of the Target cell are obtained
The difference of value；Judge whether the difference is more than the first predetermined threshold value；When the difference is more than first predetermined threshold value, choosing
Select frequency corresponding to the Target cell and carry out the CSFB business；When the difference is less than first predetermined threshold value, choosing
Select frequency corresponding with the increased neighbor cell of the signal value and carry out the CSFB business.
Alternatively, first predetermined threshold value is the signal value between the neighbor cell pre-estimated when the terminal moves
Variable quantity.
Alternatively, first predetermined threshold value is determined by equation below：Δ α=V × t × Δ β × 2, wherein, V is institute
State the translational speed of terminal, t be CSFB during from initiating a call to time for establishing call, when Δ β is that the terminal moves
The variable quantity of signal value in unit distance.
Alternatively, it is described before the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals
Method also includes：Judge whether the translational speed of the terminal is more than the second predetermined threshold value, wherein, when the mobile speed of the terminal
When degree is more than second predetermined threshold value, triggering measures at least one neighbor cell of the current institute persistent district of terminal
First signal value.
Alternatively, when the neighbor cell is multiple, according to the sequential storage institute of first signal value from big to small
State neighbor cell.
Alternatively, determine that the increased neighbor cell of the signal value includes in the multiple neighbor cell：It is it is determined that described
Secondary signal value described in multiple neighbor cells is maximum and the variation tendency of signal value is that the neighbor cell increased is the signal
It is worth increased neighbor cell.
According to another embodiment of the invention, there is provided a kind of CSFB redirection devices, including：First processing module,
For initiating CSFB business, and the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals；The
Two processing modules, the redirection information issued for receiving network side equipment, and indicated by the measurement redirection information
The signal value of Target cell and the secondary signal value of at least one neighbor cell；Determining module, for more described first
Signal value and the secondary signal value, and the increased neighbor cell of signal value is determined at least one neighbor cell；
Selecting module, for the signal value of the secondary signal value according to the increased neighbor cell of the signal value and the Target cell
Comparative result, frequency corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell is selected to enter
The row CSFB business.
Alternatively, the selecting module is additionally operable to when the secondary signal value for judging the increased neighbor cell of the signal value is big
When the signal value of the Target cell, the frequency of the increased neighbor cell of the signal value is selected to carry out the CSFB business.
Alternatively, the selecting module is additionally operable to when the secondary signal value for judging the increased neighbor cell of the signal value is small
When the signal value of the Target cell, secondary signal value and the target for obtaining the increased neighbor cell of the signal value are small
The difference of the signal value in area；Judge whether the difference is more than the first predetermined threshold value；Preset when the difference is more than described first
During threshold value, frequency corresponding to the Target cell is selected to carry out the CSFB business；Preset when the difference is less than described first
During threshold value, frequency corresponding with the increased neighbor cell of the signal value is selected to carry out the CSFB business.
Alternatively, described device also includes：Judge module, for judging whether the translational speed of the terminal is more than second
Predetermined threshold value, wherein, when the translational speed of the terminal is more than second predetermined threshold value, it is current that triggering measures the terminal
First signal value of at least one neighbor cell of institute persistent district.
According to another embodiment of the invention, there is provided a kind of terminal, including：CSFB described in any of the above-described is reset
To device.
According to another embodiment of the invention, there is provided the system that a kind of CSFB is redirected, including terminal and network side
Equipment, it is characterised in that the terminal, for initiating CSFB business, measure at least the one of the current institute persistent district of the terminal
First signal value of individual neighbor cell；The redirection information that the network side equipment issues is received, measures the redirection information
The signal value of indicated Target cell and the secondary signal value of at least one neighbor cell；Compare first signal value
With the secondary signal value, the increased neighbor cell of signal value is determined at least one neighbor cell；According to the letter
The secondary signal value and the comparative result of the signal value of the Target cell of number increased neighbor cell of value, selection and the signal
It is worth frequency corresponding to frequency corresponding to increased neighbor cell or the Target cell and carries out the CSFB business；The network
Side apparatus, for issuing the redirection information to the terminal.
According to another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and used
In the program code for performing following steps：Initiate CSFB business, the current institute persistent district of measuring terminals it is at least one adjacent small
First signal value in area；The redirection information that network side equipment issues is received, measures the target indicated by the redirection information
The signal value of cell and the secondary signal value of at least one neighbor cell；Compare first signal value and second letter
Number value, determines signal value increased neighbor cell at least one neighbor cell；According to the increased phase of the signal value
The secondary signal value of adjacent cell and the comparative result of the signal value of the Target cell, are selected increased adjacent with the signal value
Frequency corresponding to frequency corresponding to cell or the Target cell carries out the CSFB business.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When judging the signal
Be worth increased neighbor cell secondary signal value be more than the Target cell signal value when, select the increased phase of the signal value
The frequency of adjacent cell carries out the CSFB business.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When judging the signal
Be worth increased neighbor cell secondary signal value be less than the Target cell signal value when, obtain the increased phase of the signal value
The secondary signal value of adjacent cell and the difference of the signal value of the Target cell；Judge whether the difference is more than the first default threshold
Value；When the difference is more than first predetermined threshold value, frequency corresponding to the Target cell is selected to carry out the CSFB industry
Business；When the difference is less than first predetermined threshold value, frequency corresponding with the increased neighbor cell of the signal value is selected
Carry out the CSFB business
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：Judge the terminal
Whether translational speed is more than the second predetermined threshold value, wherein, when the translational speed of the terminal is more than second predetermined threshold value,
Triggering measures first signal value of at least one neighbor cell of the current institute persistent district of terminal
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When the neighbor cell
For it is multiple when, according to neighbor cell described in the sequential storage of first signal value from big to small.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：Determine the multiple phase
Secondary signal value described in adjacent cell is maximum and the variation tendency of signal value is that the neighbor cell increased is the signal value increase
Neighbor cell.
Pass through present invention measurement and the first signal value of at least one neighbor cell of the current institute persistent district of comparison terminal
With the signal value of the Target cell indicated by redirection information and the secondary signal value of at least one neighbor cell, selection and letter
Frequency corresponding to number frequency corresponding to the increased neighbor cell of value or Target cell carries out CSFB business, efficiently solve by
Cause to redirect in terminal movement and fail, the problem of then causing CSFB call failures so that terminal still can be with when mobile
The preferable cell of selection signal value completes the redirection of CSFB calls, avoids and is lost due to being redirected caused by the movement of terminal
Lose, improve the quality of CSFB calls and the Experience Degree of user.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
The schematic diagram that terminal when Fig. 1 is high-speed mobile redirects；
Fig. 2 is the network architecture diagram that CSFB according to embodiments of the present invention is redirected；
Fig. 3 is the method flow diagram that CSFB according to embodiments of the present invention is redirected；
Fig. 4 is the method flow diagram redirected according to the CSFB of alternative embodiment of the present invention；
Fig. 5 is the method flow diagram redirected according to the CSFB of another alternative embodiment of the present invention；
Fig. 6 is the information exchange flow chart that CSFB according to embodiments of the present invention is redirected；
Fig. 7 is the structured flowchart of CSFB redirection devices according to embodiments of the present invention；
Fig. 8 is the structured flowchart according to the CSFB redirection devices of alternative embodiment of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.
In order to more fully understand the embodiment of the present application, below by the explanation of technical terms being related in the embodiment of the present application such as
Under：
Signal value, for reflecting the parameter value of signal strength, for example, in physical channels such as PDCH, PRACH or PUSCH
On a certain signal code power that receives, referred to as received signal code power (Reference Signal Receiving Power,
Referred to as RSCP).
Embodiment 1
Fig. 2 is the network architecture diagram that CSFB according to embodiments of the present invention is redirected, as shown in Fig. 2 the network architecture bag
Include：Terminal 22 and network side equipment 24, wherein, terminal 22 is used to initiate CSFB business to network side equipment 24 and receives network side
The redirection information that equipment 24 issues, selected according to the semaphore of the redirection information and the measurement neighbor cell of terminal 22 corresponding
Frequency carry out CSFB business；Network side equipment 24 is used for the CSFB service requests that receiving terminal 22 is sent and issued to terminal 22
Redirection information.
A kind of CSFB reorientation methods for running on Fig. 2 are provided in the present embodiment, and Fig. 3 is according to embodiments of the present invention
CSFB redirect method flow diagram, as shown in figure 3, the flow comprises the following steps：
Step S302, initiation CSFB business, the first of at least one neighbor cell of the current institute persistent district of measuring terminals
Signal value；
Step S304, the redirection information that network side equipment issues is received, the target measured indicated by redirection information is small
The signal value in area and the secondary signal value of at least one neighbor cell；
Step S306, compare the first signal value and secondary signal value, determine that signal value increases at least one neighbor cell
The neighbor cell added；
Step S308, the comparison of the secondary signal value of the increased neighbor cell of basis signal value and the signal value of Target cell
As a result, frequency corresponding to corresponding with the increased neighbor cell of signal value frequency or Target cell is selected to carry out CSFB business.
By above-mentioned steps, the of at least one neighbor cell of measurement and the current institute persistent district of comparison terminal is realized
The signal value of Target cell indicated by one signal value and redirection information and the secondary signal value of at least one neighbor cell,
Frequency corresponding to selection frequency corresponding with the increased neighbor cell of signal value or Target cell carries out CSFB business, effectively
Solve and fail because terminal movement causes to redirect, the problem of then causing CSFB call failures so that terminal is when mobile
Still the redirection of CSFB calls can be completed with the preferable cell of selection signal value, is avoided due to weight caused by the movement of terminal
Orientation failure, improve the quality of CSFB calls and the Experience Degree of user.
In an optional embodiment, above-mentioned steps S308 can perform following operation：When judging that signal value is increased
When the secondary signal value of neighbor cell is more than the signal value of Target cell, the frequency that selection signal is worth increased neighbor cell is carried out
CSFB business, by above-mentioned deterministic process, CSFB industry can be carried out in the frequency for the neighbor cell that signal value is more than Target cell
The signal value of the Target cell of business and selection is in sustainable growth state.
In an optional embodiment, above-mentioned steps S308 can also carry out following operation：When judge signal value increase
The secondary signal value of neighbor cell when being less than the signal value of Target cell, obtain the second letter of signal value increased neighbor cell
Number value and the difference of the signal value of Target cell；Judge whether difference is more than the first predetermined threshold value；Preset when difference is more than first
During threshold value, frequency corresponding to selection target cell carries out CSFB business；When difference is less than the first predetermined threshold value, selection and signal
It is worth frequency corresponding to increased neighbor cell and carries out CSFB business.The present embodiment is believed the second of the increased neighbor cell of signal value
Number value and the signal value of Target cell subtract each other to obtain a difference, then by the difference compared with the first predetermined threshold value, root
It is according to the secondary signal value of the above-mentioned increased neighbor cell of comparative result gauge signal value and the difference of signal value of Target cell
It is no sufficiently large so that the maximum cell of signal value can be chosen after call is established.
In an optional embodiment, between the neighbor cell that the first predetermined threshold value is pre-estimated when being moved for terminal
The variable quantity of signal value, in the present embodiment, because first predetermined threshold value is that terminal initiation CSFB business was conversed to foundation
The variable quantity of the signal value for the increased neighbor cell of signal value estimated in journey and the signal value of Target cell, therefore by above-mentioned difference
Value can be estimated accurately when establishing end of conversation compared with the variable quantity, the increase of the signal value of increased neighbor cell
The decrement for the Target cell that amount and network issue, when then accurately estimating terminal movement between neighbor cell and Target cell
The variable quantity of signal value.
In one alternate embodiment, above-mentioned first predetermined threshold value can be determined by equation below：Δ α=V × t × Δ
β × 2, wherein, V is the translational speed of terminal, and t is, from the time for establishing call is initiated a call to, Δ β is terminal during CSFB
The variable quantity of signal value when mobile in unit distance.
In the present embodiment, because the incrementss of signal value and the signal value of Target cell of increased neighbor cell subtract
It is identical on a small quantity, is α, therefore, Δ α=2 × α, wherein, α=V × t × Δ β, in the prior art, terminal is on base station side
Every 100 meters of signal value changes are about 3dB when edge moves, and terminal carries out CSFB processes and conversed greatly from foundation is initiated a call to
It is approximately 3s, therefore, above-mentioned formula can be write as：α=V × 3 × 3.
In an optional embodiment, first at least one neighbor cell of the current institute persistent district of measuring terminals
Before signal value, following steps are can also carry out：Judge whether the translational speed of terminal is more than the second predetermined threshold value, wherein, when
When the translational speed of terminal is more than the second predetermined threshold value, at least one neighbor cell of the current institute persistent district of triggering measuring terminals
The first signal value.
Because the scene and terminal of terminal high-speed movement are static or the scene of low speed movement still has certain difference
, it may cause terminal after the scene of VAS application -to-terminal service high-speed mobile suitable for the communication technology of static or low speed movement
The reduction or failure of speech quality, and the technical scheme provided in the embodiment of the present application may be equally applied to high-speed mobile field
Scape, in the present embodiment, can before the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals
To judge whether terminal is in the state of high-speed mobile, when terminal is more than the second predetermined threshold value, it was demonstrated that the terminal is at a high speed
Mobile state, then it can trigger the behaviour of the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals
Make.Can so be effectively guaranteed in the state of terminal is in high-speed mobile can just perform the steps such as measurement, avoid end
End performs unnecessary operation under low speed movement or inactive state, saves the efficiency that call is established.
Alternatively, the above-mentioned translational speed for judging terminal whether be more than the second predetermined threshold value judgment step can initiate
Before CSFB business and above-mentioned second predetermined threshold value can be set as 200,000 ms/h.
In the present embodiment, the first letter of at least one neighbor cell of the current institute persistent district of above-mentioned triggering measuring terminals
The mode of the operation of number value is only optional mode, at least one neighbor cell of the current institute persistent district of measuring terminals
Before first signal value, judge whether terminal is in the state of high-speed mobile, can also be realized by following mode：Can be pre-
The region that high ferro is passed through first is arranged to high ferro region, when judging that terminal is located in above-mentioned high ferro region, it is determined that the terminal
State in high-speed mobile, and then trigger the first signal of at least one neighbor cell of the current institute persistent district of measuring terminals
The operation of value, above-mentioned deterministic process can be identified for the position of terminal by base station or determine the terminal using GPS location
Position so that determine the terminal whether be in high ferro region in, but be not restricted to that this.
In an optional embodiment, when neighbor cell is multiple, according to the order of the first signal value from big to small
Store neighbor cell.It is alternatively possible to the signal value by least one neighbor cell of the current institute persistent district of the terminal of measurement
RSCP, physical district ID (Physical Cell Identifier, referred to as PCI) and UTRA absolute RF channel numbers (UTRA
Absolute Radio Frequency Channel Number, referred to as UARFCN) etc. information be stored in file CSFB_P
In, as shown in table 1.
| PCI | UARFCN | RSCP | |
| CellA | PCIA | UARFCNA | PA |
| CellB | PCIB | UARFCNB | PB |
| CellT | PCIt | UARFCNt | Pt |
Table 1
In this embodiment, the maximum neighbor cell of signal value and its phase can be quickly found by above-mentioned storage mode
Close information.
The step of increased neighbor cell of signal value is determined in an optional embodiment, in above-mentioned multiple neighbor cells
It can also carry out operations described below：Determine that secondary signal value is maximum in multiple neighbor cells and the variation tendency of signal value is increase
Neighbor cell is the increased neighbor cell of signal value.In the present embodiment, due to being according to the first signal value from big to small suitable
Sequence stores the relevant information of neighbor cell into file CSFB_P, therefore can be suitable in file CSFB_P according to neighbor cell
Sequence is found, and generally, it is increased adjacent for above-mentioned signal value to find first increased neighbor cell of signal value
Cell.
Embodiment 2
Another CSFB reorientation methods for running on Fig. 2 are provided in the present embodiment, and Fig. 4 is optional according to the present invention
The method flow diagram that the CSFB of embodiment is redirected, as shown in figure 4, the flow comprises the following steps：
S402, terminal reside in LTE cells and CSFB business are initiated in moving process；
S404, terminal measure whether current translational speed is more than 200,000 ms/h；If so, then judge now to be in height
In the mobile state of speed, step S406 is performed；If it is not, then perform step S416；
S406, terminal measure the first signal value P of WCDMA neighbor cells A and B in current SIB6 messageA1And PB1, and press
Store the first signal value P of neighbor cell successively according to the order of signal value from big to smallA1And PB1, PCI and UARFCN are in file
In CSFB_P；
S408, terminal receive the signal of measurement network redirection Target cell after the redirection information that network side equipment issues
Value PtWith cell A and B secondary signal value PA2And PB2And respectively with the first signal value PA1And PB1It is compared, determines multiple phases
Secondary signal value is maximum in adjacent cell and the variation tendency of signal value is that the neighbor cell increased is that signal value is increased adjacent small
Area's (assuming that the increased neighbor cell of signal value is B cells)；
S410, judge the signal value P of redirection target celltWhether the signal value of signal value increased neighbor cell is more than
PB2；If so, then perform step S412；If it is not, then perform step S414；
S412, obtain PtWith PB2Difference DELTA P, judge Δ P whether be less than terminal initiate CSFB business conversed to foundation
The variation delta α of the signal value for the increased neighbor cell of signal value estimated in journey and the signal value of Target cell；If so, then hold
Row step S414；If it is not, perform step S416；
S414, terminal abandon the frequency UARFCN for selecting network to issuet, select the UARFCN in CSFB_P filesBFrequency enters
Row CSFB business；
S416, the frequency UARFCN that selecting network side apparatus issuestCarry out CSFB business.
Embodiment 3
Another CSFB reorientation methods for running on Fig. 2 are provided in the present embodiment, and Fig. 5 is another according to the present invention
The method flow diagram that the CSFB of alternative embodiment is redirected, as shown in figure 5, the flow comprises the following steps：
S502, terminal reside in LTE cells and CSFB business are initiated in moving process；
S504, terminal measure whether current translational speed is more than 200,000 ms/h；If so, then judge now to be in height
In the mobile state of speed, step S506 is performed；If it is not, then perform step S516；
S506, terminal measure the first signal value P of 2G, 3G neighbor cell A and B in current SIB6 messageA1And PB1, and press
Store the first signal value P of neighbor cell successively according to the order of signal value from big to smallA1And PB1, PCI and UARFCN are in file
In CSFB_P；
S508, terminal measure network redirection Target cell again after receiving the redirection information that network side equipment issues
Signal value PtWith cell A and B secondary signal value PA2And PB2And respectively with the first signal value PA1And PB1It is compared, it is determined that more
Secondary signal value is maximum in individual neighbor cell and the variation tendency of signal value is that the neighbor cell increased is the increased phase of signal value
Adjacent cell (assuming that the increased neighbor cell of signal value is B cells)；
S510, judge the signal value P of redirection target celltWhether the signal value of signal value increased neighbor cell is more than
PB2；If so, then perform step S512；If it is not, then perform step S514；
S512, obtain PtWith PB2Difference DELTA P, judge Δ P whether be less than terminal initiate CSFB business conversed to foundation
The variation delta α of the signal value for the increased neighbor cell of signal value estimated in journey and the signal value of Target cell；If so, then hold
Row step S514；Otherwise, step S516 is performed；
S514, terminal abandon the frequency UARFCN for selecting network to issuet, select the UARFCN in CSFB_P filesBFrequency enters
Row CSFB business；
S516, the frequency UARFCN that selecting network side apparatus issuestCarry out CSFB business.
Embodiment 4
Another CSFB reorientation methods for running on Fig. 2 are provided in the present embodiment, and Fig. 6 is implemented according to the present invention
The information exchange flow chart that the CSFB of example is redirected, as shown in fig. 6, the flow comprises the following steps：
Step S602, terminal initiate CSFB business to LTE cells；
Step S604, when terminal monitoring is in the state of high-speed mobile to it, the first of measurement neighbor cell A and B believes
Number value PA1And PB1And preserve；
Step S606, terminal receive the redirection message that network side equipment issues, and measure the signal value of the Target cell
With neighbor cell A and B secondary signal value PA2And PB2, determine that secondary signal value in neighbor cell A and B is maximum and signal value
Variation tendency is that the neighbor cell of increase is the increased neighbor cell of signal value, and calculates the signal value and signal value of Target cell
The difference of increased neighbor cell；
Step S608, when B cells are the increased neighbor cell of signal value and the signal value more than Target cell, or B
Cell is less than for the signal value and the difference of the increased neighbor cell of signal value of the increased neighbor cell of signal value and Target cell
During Δ α, wherein, Δ α is that terminal initiates CSFB business to establishing the increased neighbor cell of signal value estimated in communication process
The variable quantity of the signal value of signal value and Target cell, select UARFCNBFrequency carries out CSFB business.
By above-mentioned steps, efficiently solve and fail because terminal high-speed movement causes to redirect, then cause CSFB
The problem of call failure so that terminal still can complete CSFB calls in high-speed mobile with the preferable cell of selection signal value
Redirect, avoid due to redirecting failure caused by the high-speed mobile of terminal, improve quality and the user of CSFB calls
Experience Degree.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage
In medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, calculate
Machine, server, or network equipment etc.) perform method described in each embodiment of the present invention.
Embodiment 5
Additionally provide a kind of CSFB redirection devices in the present embodiment, the device is used to realizing above-described embodiment and preferably
Embodiment, repeating no more for explanation was carried out.As used below, term " module " can realize predetermined function
The combination of software and/or hardware.Although device described by following examples is preferably realized with software, hardware, or
The realization of the combination of person's software and hardware is also what may and be contemplated.
Fig. 7 is the structured flowchart of CSFB redirection devices according to embodiments of the present invention, as shown in fig. 7, the device includes：
First processing module 72, for initiating CSFB business, and at least one neighbor cell of the current institute persistent district of measuring terminals
The first signal value；Second processing module 74, the redirection information issued for receiving network side equipment, and measurement redirect
The signal value of Target cell indicated by information and the secondary signal value of at least one neighbor cell；Determining module 76, for than
Compared with the first signal value and secondary signal value, and the increased neighbor cell of signal value is determined at least one neighbor cell；Choosing
Select module 78, for the increased neighbor cell of basis signal value signal value and Target cell signal value comparative result, choosing
Select frequency corresponding to corresponding with the increased neighbor cell of signal value frequency or Target cell and carry out CSFB business.
In an optional embodiment, selecting module 78 is additionally operable to when the signal for judging the increased neighbor cell of signal value
When value is more than the signal value of Target cell, the frequency that selection signal is worth increased neighbor cell carries out CSFB business.
In an optional embodiment, selecting module 78 is additionally operable to when the signal for judging the increased neighbor cell of signal value
Value less than Target cell signal value when, obtain the signal value of signal value increased neighbor cell and the signal value of Target cell
Difference；Judge whether difference is more than the first predetermined threshold value；When difference is more than the first predetermined threshold value, corresponding to selection target cell
Frequency carries out CSFB business；When difference is less than the first predetermined threshold value, frequency corresponding with the increased neighbor cell of signal value is selected
Point carries out CSFB business.
In an optional embodiment, Fig. 8 is the structure according to the CSFB redirection devices of alternative embodiment of the present invention
Block diagram, as shown in figure 8, the device includes judge module 82, it is default for whether being more than second in the translational speed for judging terminal
Threshold value, wherein, when the translational speed of terminal is more than the second predetermined threshold value, the current institute persistent district of triggering measuring terminals is at least
First signal value of one neighbor cell.
In the present embodiment, above-mentioned judge module 82 can be used for after CSFB business is initiated, in the current institute of measuring terminals
Before first signal value of at least one neighbor cell of persistent district, judge whether the translational speed of terminal is more than second and presets
Threshold value, wherein, when the translational speed of terminal is more than the second predetermined threshold value, the current institute persistent district of triggering measuring terminals is at least
First signal value of one neighbor cell；Above-mentioned judge module 82, which can be used for performing in first processing module 72, initiates CSFB
Before business, and the operation of the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals, judge
Whether the translational speed of terminal is more than the second predetermined threshold value, wherein, when the translational speed of terminal is more than the second predetermined threshold value, touch
Send out the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals.
A kind of terminal is additionally provided in the present embodiment, including：The above-mentioned CSFB redirection devices of any of the above-described.
The system that a kind of CSFB is redirected is additionally provided in the present embodiment, and the system includes：Terminal 22 and network side are set
Standby 24, wherein, terminal 22, for initiating CSFB business, at least one neighbor cell of the current institute persistent district of measuring terminals 22
The first signal value；The redirection information that network side equipment 24 issues is received, measures the Target cell indicated by redirection information
Signal value and at least one neighbor cell secondary signal value；Compare the first signal value and secondary signal value, at least one
The increased neighbor cell of signal value is determined in neighbor cell；The signal value and Target cell of the increased neighbor cell of basis signal value
Signal value comparative result, select frequency corresponding to corresponding with the increased neighbor cell of signal value frequency or Target cell
Carry out CSFB business；Network side equipment 24, for issuing redirection information to terminal 22.
Embodiment 6
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
The program code for performing following steps to be arranged to storage to be used for：S1, initiates CSFB business, and measuring terminals are currently resident small
First signal value of at least one neighbor cell in area；S2, receives the redirection information that network side equipment issues, and measurement redirects
The signal value of Target cell indicated by information and the secondary signal value of at least one neighbor cell；S3, compare the first signal value
With secondary signal value, the increased neighbor cell of signal value is determined at least one neighbor cell；S4, basis signal value are increased
The comparative result of the signal value of neighbor cell and the signal value of Target cell, select corresponding with the increased neighbor cell of signal value
Frequency corresponding to frequency or Target cell carries out CSFB business.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When judging signal value
When the signal value of increased neighbor cell is more than the signal value of Target cell, the frequency of the increased neighbor cell of selection signal value enters
Row CSFB business.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When judging signal value
When the signal value of increased neighbor cell is less than the signal value of Target cell, the signal value of the increased neighbor cell of signal value is obtained
With the difference of the signal value of Target cell；Judge whether difference is more than the first predetermined threshold value；When difference is more than the first predetermined threshold value
When, frequency corresponding to selection target cell carries out CSFB business；When difference is less than the first predetermined threshold value, selection increases with signal value
Frequency corresponding to the neighbor cell added carries out CSFB business.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：Judge the shifting of terminal
Whether dynamic speed is more than the second predetermined threshold value, wherein, when the translational speed of terminal is more than the second predetermined threshold value, triggering measurement is eventually
Hold the first signal value of at least one neighbor cell of current institute persistent district.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：When neighbor cell is
When multiple, according to the sequential storage neighbor cell of the first signal value from big to small.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：Determine multiple adjacent
Signal value is maximum in cell and the variation tendency of signal value is that the neighbor cell increased is the increased neighbor cell of signal value.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or
CD etc. is various can be with the medium of store program codes.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (14)
- A kind of 1. circuit domain dropping CSFB reorientation methods, it is characterised in that including：Initiate CSFB business, the first signal value of at least one neighbor cell of the current institute persistent district of measuring terminals；The redirection information that network side equipment issues is received, measures the signal value of the Target cell indicated by the redirection information With the secondary signal value of at least one neighbor cell；Compare first signal value and the secondary signal value, signal value increase is determined at least one neighbor cell Neighbor cell；According to the comparative result of the signal value of secondary signal value and the Target cell of the increased neighbor cell of the signal value, Select described in frequency progress corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell CSFB business.
- 2. according to the method for claim 1, it is characterised in that the second letter according to the increased neighbor cell of the signal value Number value and the comparative result of the signal value of the Target cell, select frequency corresponding with the increased neighbor cell of the signal value Or frequency corresponding to the Target cell carries out the CSFB business, including：When the secondary signal value for judging the increased neighbor cell of the signal value is more than the signal value of the Target cell, selection The frequency of the increased neighbor cell of signal value carries out the CSFB business.
- 3. according to the method for claim 1, it is characterised in that the second letter according to the increased neighbor cell of the signal value Number value and the comparative result of the signal value of the Target cell, select frequency corresponding with the increased neighbor cell of the signal value Or frequency corresponding to the Target cell carries out the CSFB business, in addition to：When the secondary signal value for judging the increased neighbor cell of the signal value is less than the signal value of the Target cell, obtain The secondary signal value of the increased neighbor cell of signal value and the difference of the signal value of the Target cell；Judge whether the difference is more than the first predetermined threshold value；When the difference is more than first predetermined threshold value, frequency corresponding to the Target cell is selected to carry out the CSFB industry Business；When the difference is less than first predetermined threshold value, frequency corresponding with the increased neighbor cell of the signal value is selected Carry out the CSFB business.
- 4. according to the method for claim 3, it is characterised in that wherein, first predetermined threshold value moves for the terminal When the neighbor cell pre-estimated between signal value variable quantity.
- 5. according to the method for claim 4, it is characterised in that first predetermined threshold value is determined by equation below：Δα =V × t × Δ β × 2, wherein, V be the terminal translational speed, t be CSFB during from initiate a call to establish call Time, Δ β are the variable quantity of the signal value in unit distance when the terminal moves.
- 6. according to the method in any one of claims 1 to 3, it is characterised in that the current institute persistent district of measuring terminals Before first signal value of at least one neighbor cell, methods described also includes triggering and measures the current institute persistent district of terminal At least one neighbor cell first signal value：Judge whether the translational speed of the terminal is more than second and presets Threshold value, wherein, when the translational speed of the terminal is more than second predetermined threshold value, triggering measures the terminal and currently stayed Stay first signal value of at least one neighbor cell of cell.
- 7. according to the method for claim 1, it is characterised in that when the neighbor cell is multiple, according to described first Neighbor cell described in the sequential storage of signal value from big to small.
- 8. according to the method for claim 7, it is characterised in that determine that the signal value increases in the multiple neighbor cell The neighbor cell added includes：Determine that secondary signal value described in the multiple neighbor cell is maximum and the variation tendency of signal value is The neighbor cell of increase is the increased neighbor cell of the signal value.
- A kind of 9. circuit domain dropping CSFB redirection devices, it is characterised in that including：First processing module, for initiating CSFB business, and the current institute persistent district of measuring terminals is at least one adjacent small First signal value in area；Second processing module, the redirection information issued for receiving network side equipment, and the measurement redirection information institute The signal value of the Target cell of instruction and the secondary signal value of at least one neighbor cell；Determining module, for first signal value and the secondary signal value, and described at least one adjacent small The increased neighbor cell of signal value is determined in area；Selecting module, for the secondary signal value according to the increased neighbor cell of the signal value and the signal of the Target cell The comparative result of value, select frequency corresponding to frequency corresponding with the increased neighbor cell of the signal value or the Target cell Point carries out the CSFB business.
- 10. device according to claim 9, it is characterised in that the selecting module, which is additionally operable to work as, judges the signal value When the secondary signal value of increased neighbor cell is more than the signal value of the Target cell, select the signal value increased adjacent The frequency of cell carries out the CSFB business.
- 11. device according to claim 9, it is characterised in that the selecting module, which is additionally operable to work as, judges the signal value When the secondary signal value of increased neighbor cell is less than the signal value of the Target cell, it is increased adjacent to obtain the signal value The secondary signal value of cell and the difference of the signal value of the Target cell；Judge whether the difference is more than the first default threshold Value；When the difference is more than first predetermined threshold value, frequency corresponding to the Target cell is selected to carry out the CSFB industry Business；When the difference is less than first predetermined threshold value, frequency corresponding with the increased neighbor cell of the signal value is selected Carry out the CSFB business.
- 12. the device according to any one of claim 9 to 11, it is characterised in that described device also includes：Judge mould Block, for whether being more than the second predetermined threshold value in the translational speed for judging the terminal, wherein, when the translational speed of the terminal During more than second predetermined threshold value, triggering measures at least one neighbor cell of the current institute persistent district of terminal First signal value.
- A kind of 13. terminal, it is characterised in that including：Circuit domain dropping CSFB any one of claim 9 to 12 is reset To device.
- 14. the system that a kind of circuit domain dropping CSFB is redirected, including terminal and network side equipment, it is characterised in thatThe terminal, for initiating CSFB business, measure at least one neighbor cell of the current institute persistent district of the terminal First signal value；The redirection information that the network side equipment issues is received, measures the target indicated by the redirection information The signal value of cell and the secondary signal value of at least one neighbor cell；Compare first signal value and second letter Number value, determines signal value increased neighbor cell at least one neighbor cell；According to the increased phase of the signal value The secondary signal value of adjacent cell and the comparative result of the signal value of the Target cell, are selected increased adjacent with the signal value Frequency corresponding to frequency corresponding to cell or the Target cell carries out the CSFB business；The network side equipment, for issuing the redirection information to the terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610571773.4A CN107635260B (en) | 2016-07-19 | 2016-07-19 | Circuit Switched Fallback (CSFB) redirection method, device, terminal and system |
| PCT/CN2016/104070 WO2018014461A1 (en) | 2016-07-19 | 2016-10-31 | Circuit switched fallback csfb redirection method, apparatus, terminal and system |
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| CN201610571773.4A CN107635260B (en) | 2016-07-19 | 2016-07-19 | Circuit Switched Fallback (CSFB) redirection method, device, terminal and system |
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| CN109451549A (en) * | 2019-01-03 | 2019-03-08 | 中国联合网络通信集团有限公司 | Voice backing method, device and terminal device |
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| CN110536363B (en) * | 2018-05-23 | 2021-08-24 | 中国移动通信集团浙江有限公司 | Circuit domain fallback frequency point configuration method and device, electronic equipment and storage medium |
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| WO2018014461A1 (en) | 2018-01-25 |
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