CN104080105B - Performance of handoffs optimization method and device in dynamic simulation platform - Google Patents
Performance of handoffs optimization method and device in dynamic simulation platform Download PDFInfo
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Abstract
The embodiment of the invention discloses the performance of handoffs optimization method in a kind of dynamic simulation platform and device, it is related to wireless communication field, for improving performance of handoffs optimization efficiency.In the present invention, the abnormal number of times that switched first to terminal in cell-of-origin on dynamic simulation platform is counted, and then the handoff parameter of cell-of-origin is optimized according to statistical result.Compared with handoff parameter Automatic Optimal flow of the prior art, this programme does not need network side largely to count the KPI indexs of switching problem and network for a long time, so as to shorten the time required for performance of handoffs optimization, improves performance of handoffs optimization efficiency.
Description
Technical field
The present invention relates to the performance of handoffs optimization method in wireless communication field, more particularly to a kind of dynamic simulation platform and
Device.
Background technology
The flattening and flexibility that are proposed to preferably adapt to network structure of self-optimizing network (SON) technology, subtract
Few operator carries out the cost of labor of Operation and Maintenance to network.3G (Third Generation) Moblie standardization body (3rd Generation
Partnership Project, 3GPP) SON multiple use cases (Use Case) have been organized in defined in 36.902 agreements,
It may be summarized to be aspect of network self-configuration and the class of self-optimizing two, including Physical Cell Identifier (PCI) self-configuring, face cell relation automatically
(Automatic Neighbour Relation, ANR) function, mobile robustness optimization (Mobile Robustness
Optimization, MRO), mobility load balance optimization (MLB) etc..
MRO target is that dynamic improves network switching performance, it is to avoid switched caused by inappropriate parameter setting
(Handover, HO) table tennis, HO failures and Radio Link Failure (Radio Link Failure, RLF), and reduce Consumer's Experience
And the waste that Internet resources are caused.By assessing RLF and reducing unnecessary switching, carry out adjust automatically handoff boundary ginseng
Number, so as to reduce the artificial workload in network management and optimization.
To the discussion of MRO use-cases in standard, the various scenes and reason for being likely to occur handoff failure, Ran Houfen are analyzed first
Analysis avoids the solution of handoff failure, and the modification that parameter how is completed by interaction between signaling is finally discussed.36.300 agreements
In describe due to intra-LTE mobility parameters set it is unreasonable caused by improper switching following three kinds of scenes：
First, switch too late：Cell-of-origin has occurred and that RLF, user terminal (User before switching initialization or in handoff procedure
Equipment, UE) initiate just attempting to rebuild Radio Link (Radio Link, RL) connection with Target cell after switching or do not have
There is initiation switching UE to be in non-former cell.
Second, switching too early：Switching from cell-of-origin to Target cell is just completed or there occurs in handoff procedure
RLF, UE attempt to rebuild RL connections in cell-of-origin.
3rd, it is switched to wrong cell：Switching from cell-of-origin to Target cell just completed or handoff procedure in occur
Other cells that RLF, UE attempt beyond cell-of-origin and Target cell rebuild RL connections.
MRO processes are automatic to adjust by for a long time to the statistics of all user's three of the above switching problem scenes in existing network
Whole corresponding handoff parameter, mainly cell personalization skew (Cell Individual Offset, CIO), triggered time
(Time-To-trigger, TTT), A3 event offsets (A3Event Offset) and hysteresis (Hysteresis).It is finally reached
The purpose of Automatic Optimal network.
To sum up, the handoff parameter Automatic Optimal flow discussed in existing standard is, it is necessary to which network side long-time, a large amount of statistics are cut
The key performance for changing problem and network indicates that long-time detection is also needed to after (KPI) index, adjusting parameter to be regulateed whether rationally.
Detection adjustment and the overlong time of optimization, are not suitable for system simulation platform and realize the function.
The content of the invention
The embodiment of the present invention provides the performance of handoffs optimization method and device in a kind of dynamic simulation platform, is cut for improving
Transsexual energy optimization efficiency.
A kind of performance of handoffs optimization method in dynamic simulation platform, this method includes：
The abnormal number of times that switched to terminal in cell-of-origin is counted；
The handoff parameter of cell-of-origin is optimized according to statistical result.
A kind of dynamic simulation apparatus, the device includes：
Statistic unit, is counted for the abnormal number of times that switched to terminal in cell-of-origin；
Optimize unit, for being optimized according to statistical result to the handoff parameter of cell-of-origin.
In scheme provided in an embodiment of the present invention, terminal is switched in cell-of-origin first on dynamic simulation platform different
Normal number of times is counted, and then the handoff parameter of cell-of-origin is optimized according to statistical result.Cut with of the prior art
Change parameter automatic optimization flow to compare, this programme does not need network side largely statistics switching problem and network for a long time
KPI indexs, so as to shorten the time required for performance of handoffs optimization, improve performance of handoffs optimization efficiency.
Brief description of the drawings
Fig. 1 is method flow schematic diagram provided in an embodiment of the present invention；
Fig. 2 a are the switching frequency of abnormity statistical flowsheet schematic diagram in the embodiment of the present invention；
Fig. 2 b are the handoff parameter Optimizing Flow schematic diagram in the embodiment of the present invention；
Fig. 3 is apparatus structure schematic diagram provided in an embodiment of the present invention.
Embodiment
In order to improve performance of handoffs optimization efficiency, the embodiment of the present invention provides the performance of handoffs in a kind of dynamic simulation platform
Optimization method.
Referring to Fig. 1, the performance of handoffs optimization method in dynamic simulation platform provided in an embodiment of the present invention, including following step
Suddenly：
Step 10：The abnormal number of times that switched to terminal in cell-of-origin is counted；
Step 11：The handoff parameter of cell-of-origin is optimized according to statistical result.
It can include being switched to wrong cell and/or minizone pingpang handoff specifically, switching is abnormal.
When switching exception includes being switched to wrong cell, the switching exception that terminal occurs in cell-of-origin in step 10
Number of times is counted, and following steps A can be performed by implementing：
A, after the measurement event that terminal is reported in cell-of-origin is received, selection target cell and to perform terminal small to target
The handoff procedure in area, if Radio Link Failure RLF occurs in cell-of-origin and selects to remove cell-of-origin and mesh for terminal before switching is completed
Mark other cells outside cell and carry out Radio Link RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If terminal
Successful switch then starts the corresponding handoff error cell of Target cell and judges timer, if in the handoff error to Target cell
Cell judge terminal before timer expiry Target cell occur RLF and select in addition to cell-of-origin and Target cell other are small
Area carries out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If judging timer expiry in the handoff error cell
Preceding terminal then switches the terminal into mistake from Target cell successful switch to other cells in addition to cell-of-origin and Target cell
The number of times of cell adds 1.
When switching exception includes minizone pingpang handoff, the switching exception that terminal occurs in cell-of-origin in step 10
Number of times is counted, and following steps B- steps C can be performed when implementing：
Step B：Receive after the measurement event that terminal is reported in cell-of-origin, selection target cell simultaneously performs terminal to target
The handoff procedure of cell, if terminal successful switch is to Target cell, starts the corresponding pingpang handoff of Target cell and judges timing
Device；
If step C, before the corresponding pingpang handoff of the Target cell judges timer expiry, terminal is from Target cell success
Cell-of-origin is switched back into, then the number of times of the minizone pingpang handoff by terminal from cell-of-origin to Target cell adds 1, and starts cell-of-origin
Corresponding pingpang handoff judges timer；If before the corresponding pingpang handoff in the cell-of-origin judges timer expiry, terminal is from source
Cell successful switch returns Target cell, then adds 1 by minizone pingpang handoff number of times of the terminal from Target cell to cell-of-origin.
When switching exception includes being switched to wrong cell and minizone pingpang handoff, to terminal in cell-of-origin in step 10
The number of times that the switching of generation is abnormal is counted, and following steps D- steps E can be performed when implementing：
D, after the measurement event that terminal is reported in cell-of-origin is received, selection target cell and to perform terminal small to target
The handoff procedure in area, if RLF occurs in cell-of-origin and selects in addition to cell-of-origin and Target cell for terminal before switching is completed
Other cells carry out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If terminal successful switch is to Target cell,
Then start the corresponding handoff error cell of Target cell and judge that timer and the corresponding pingpang handoff of Target cell judge timer,
If terminal occurs RLF in Target cell and selects to remove before the corresponding handoff error cell of the Target cell judges timer expiry
Other cells outside cell-of-origin and Target cell carry out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If
The corresponding handoff error cell of the Target cell judges that terminal is from Target cell successful switch to except cell-of-origin before timer expiry
With other cells outside Target cell, then the number of times for switching the terminal into wrong cell plus 1；
If E, after the corresponding handoff error cell of the Target cell judges timer expiry and the Target cell is corresponding
Pingpang handoff judges before timer expiry that terminal goes back to cell-of-origin from Target cell successful switch, then by terminal from cell-of-origin to mesh
The number of times for marking the minizone pingpang handoff of cell adds 1, and starts the corresponding pingpang handoff judgement timer in cell-of-origin and cell-of-origin
Corresponding handoff error cell judges timer；If after the corresponding handoff error cell in the cell-of-origin judges timer expiry,
And the corresponding pingpang handoff in the cell-of-origin judges before timer expiry that terminal returns Target cell from cell-of-origin successful switch, then opens
The corresponding pingpang handoff of moving-target cell judges timer and the corresponding handoff error cell of Target cell judges timer, and will
Minizone pingpang handoff number of times of the terminal from Target cell to cell-of-origin adds 1.
Specifically, optimized in step 11 according to statistical result to the handoff parameter of cell-of-origin, implementing can be as
Under：
Determining switched in the cell-of-origin number of times of exception (being switched to wrong cell or minizone pingpang handoff) of terminal is
It is no to be more than threshold value set in advance (integer for being more than 0), if so, being then in communication protocol (3GPP RS 36.304) in terminal
Defined in high-speed moving state when, by mobility control parameter (such as CIO, Time-to-Trigger, Hysteresis etc.)
Numerical value is multiplied by the corresponding velocity factor of high-speed moving state, is in terminal defined in communication protocol (3GPP RS 36.304)
During middling speed mobile status, the numerical value of mobility control parameter is multiplied by the corresponding velocity factor of middling speed mobile status.Its medium velocity
The explanation of the factor see the table below 1：
Table 1
Specifically, when switching exception includes being switched to wrong cell, according to statistical result to cell-of-origin in step 11
Handoff parameter is optimized, and implementing can also adopt with the following method：
Determine that whether terminal is switched to the number of times of wrong cell more than threshold value set in advance, if so, then according to setting
The value of step-length adjustment cell personalization skew (CIO) parameter, to reduce the number of times that terminal is switched to wrong cell；Can also be to
Upper or adjustment terminal progress nearby region measurement downwards threshold value (for example adjusting 1dB) (i.e. RSRP of the terminal in current service cell
Measured value be less than the threshold value after, just proceed by nearby region measurement).If the number of times that terminal is switched to wrong cell is not more than in advance
The threshold value first set, then return to above-mentioned steps A or step D and proceed the statistics that terminal is switched to the number of times of wrong cell.
Here, adjustment terminal carry out nearby region measurement threshold value, can avoid this cell signal can also support service but other are any
The signal of cell just reports A3 events higher than this cell certain deviation sluggishness.Adjustment CIO parameters process be also by step-length progressively
Adjustment, if for example, s-measure parameters are in adjustable range, by the s-measure parameters (implication of s-measure parameters
For：When UE, which measures this cell signal quality, is less than the value of the s-measure parameters, start to measure neighboring cell signal quality)
Value increases 1dB, if s-measure parameters are not in adjustable range, sets the whole scope of s-measure Parameter adjustables most
Small value, and increase 1dB is used as the value after adjustment on the basis of the minimum value.CIO is to be used to assess triggering measurement report bar
The cell-level particular offset of part.
When switching exception includes minizone pingpang handoff, according to handoff parameter of the statistical result to cell-of-origin in step 11
Optimize, implementing can also adopt with the following method：
Determine terminal carry out minizone pingpang handoff number of times whether be more than threshold value set in advance, if so, then according to
The value of step-length adjustment s-measure parameters is set (if for example, s-measure parameters are in adjustable range, by s-
The value increase 1dB of measure parameters；If s-measure parameters are not in adjustable range, s-measure parameters are set
Increase 1dB on the basis of the minimum value of adjustable range, and the minimum value and be used as the value after adjustment) and/or adjustment switching is partially
Putting (Hysteresisa+a3-offset), (implication of Hysteresis parameters is：When UE measurements amount meets entrance or exits some
After the threshold value of event, postpone triggering after amount of hysteresis Hysteresis and enter or exit the state-event；A3-Offset is used for
In EUTRA systems, triggering reports the deviant of the condition of A3 events, and actual value is that the parameter value is multiplied by 0.5dB) value of parameter
(for example, the value for switching offset parameter being increased one step larger), to reduce the number of times that terminal carries out minizone pingpang handoff.If
The number of times that terminal carries out minizone pingpang handoff is not more than threshold value set in advance, then returns to above-mentioned steps C or step E and continue
Carry out the statistics that terminal is switched to the number of times of wrong cell.
Preferably, after step 11, can be with detecting system performance (such as detecting handover success rate), according to testing result
Judgement is the value for needing to continue to adjust handoff parameter or rollback handoff parameter.If for example, handover success rate is lifted, needing
Continue to adjust handoff parameter, then will adjust corresponding handoff parameter again according to setting step-length；If handover success rate is reduced, need
Retract the value of handoff parameter, then the value of corresponding handoff parameter is retracted, such as by the value of corresponding handoff parameter
Retract as the value or initial value before adjusting for the last time.
With reference to specific embodiment, the present invention will be described：
Embodiment one：Switch frequency of abnormity statistics；
By setting the related timer of switching in dynamic simulation platform, judge whether the exception that switches, Yi Jixiang
The abnormal problem answered, so as to subsequently be optimized accordingly.Detail statistics flow is as shown in Figure 2 a.For example, wrong cell is adjudicated
Timer TwrongcellB and pingpang handoff judgement timer TpingpongB relation is：Tpingpongb>TwrongcellB, i.e. table tennis are cut
The timing length for changing judgement timer is more than the timing length that timer is adjudicated in wrong cell, and terminal is switched to time of wrong cell
Number is defined as Numwrongcell, terminal is switched to the pingpang handoff number of times that CellB switches back into CellA again from cell (Cell) CellA
For NumpingpongAb, opposite end, which is switched to CellA from CellB and switches back into CellB pingpang handoff number of times again, is
NumpingpongBa。
Step 1：Terminal is being received after the measurement event that cell-of-origin A is reported, selection target cell B and to Target cell
B sends handover request, to perform terminal to Target cell B handoff procedure；
Step 2：Judge terminal whether before switching is completed cell-of-origin A occur RLF and select except cell-of-origin and target it
Outer other cells C carries out RL reconstructions；If so, then arriving step 3；Otherwise, to step 4；
Step 3：The number of times for switching the terminal into wrong cell plus 1, to step 9；
Step 4：After terminal successful switch to Target cell B, in cell-of-origin, A deletes the information of terminal, and starts target
The corresponding handoff error cells of cell B judge timer TwrongcellB and the corresponding pingpang handoff of Target cell judge timer
Tpingpongb；
Step 5：Judge terminal whether in TwrongcellB occurs RLF in Target cell B before having not timed out and selects to remove cell-of-origin
RL reconstructions are carried out with other cells C outside target, if so, step 6 is then arrived, otherwise, to step 7；
Step 6：The number of times for switching the terminal into wrong cell plus 1, to step 9；
Step 7：Judge terminal whether in TwrongcellBefore b time-out terminal from Target cell B successful switch to except cell-of-origin and
Other cells C outside target, if so, step 8 is then arrived, otherwise, to step 10；
Step 8：The number of times for switching the terminal into wrong cell plus 1, to step 9；
Step 9：Judge that whether terminal is switched to the number of times of wrong cell more than threshold value set in advance, if so, then sending out
Go out to switch the alarm that accident detection exceeds thresholding, this flow terminates；Otherwise, return to step 2；
Step 10：Terminal is in TwrongcellCell-of-origin A is returned from Target cell B successful switch after b time-out, starts A pairs of cell-of-origin
The handoff error cell answered judges timer TwrongcellThe corresponding pingpang handoff of a and cell-of-origin judges timer Tpingponga；
Step 11：Judge current TpingpongWhether b has not timed out, if so, then arriving step 12, otherwise, this flow terminates；
Step 12：By NumpingpongAbPlus 1；
Step 13：Terminal is in TwrongcellTarget cell B is switched back into again from cell-of-origin A after a time-out, starts B pairs of Target cell
The handoff error cell answered judges timer TwrongcellB and the corresponding pingpang handoff of Target cell judge timer Tpingponglb；
Step 14：Judge current TpingpongWhether a is overtime, if so, then arriving step 15, otherwise, this flow terminates；
Step 15：By NumpingpongBaPlus 1；
Step 16：Judge NumpingpongAbAnd NumpingpongBaWhether threshold value set in advance is more than, if so, then sending
Switch the alarm that accident detection exceeds thresholding, this flow terminates；Otherwise, return to step 10.
Subframe numbers, the cell-of-origin of switching and Target cell ID and L3 filtering that terminal switches every time are recorded in simulation process
RSRP values afterwards, while cell ID and generation RLF and call drop subframe numbers when also needing to record UE call drops.
Embodiment two：Handoff parameter optimizes；
Switching accident detection is sent in embodiment one after the alarm of thresholding, self-optimization of switching parameter master is triggered
Flow.As shown in Figure 2 b, it is specific as follows：
Step S01：Receive the alarm that switching accident detection exceeds thresholding；
Step S02：Judge whether terminal is in the high-speed moving state or middling speed mobile status defined in communication protocol, if
It is, then to step S03, otherwise, to step S04；
Step S03：When terminal is in the high-speed moving state defined in communication protocol, by the number of mobility control parameter
Value is multiplied by the corresponding velocity factor of high-speed moving state, will when terminal is in the middling speed mobile status defined in communication protocol
The numerical value of mobility control parameter is multiplied by the corresponding velocity factor of middling speed mobile status, and this flow terminates；
Step S04：Judge whether be terminal be switched to wrong cell number of times be more than threshold value set in advance, if so,
Step S05 is then arrived, otherwise, to step S06；
Step S05：Relevant parameter is optimized, including CIO parameters etc., this flow terminates；
Step S06：Judge whether be terminal carry out minizone pingpang handoff number of times be more than threshold value set in advance, if
It is, then to step S07, otherwise, to step S08；
Step S07：Relevant parameter is optimized, including s-measure parameters, switching offset parameter etc., this flow knot
Beam；
Step S08：Carry out the parameter optimisation procedure of other SON use-cases.
Referring to Fig. 3, the embodiment of the present invention provides a kind of dynamic simulation apparatus, and the device includes：
Statistic unit 30, is counted for the abnormal number of times that switched to terminal in cell-of-origin；
Optimize unit 31, for being optimized according to statistical result to the handoff parameter of cell-of-origin.
Further, the switching is abnormal includes being switched to wrong cell and minizone pingpang handoff.
Further, the statistic unit 30 is used for：
When the switching exception includes being switched to wrong cell, the measurement event that terminal is reported in cell-of-origin is received
Afterwards, selection target cell and terminal is performed to the handoff procedure of Target cell, if terminal occurs in cell-of-origin before switching is completed
Radio Link Failure RLF simultaneously selects other cells in addition to cell-of-origin and Target cell to carry out Radio Link RL reconstructions, then will
The number of times that terminal is switched to wrong cell plus 1；If terminal successful switch is to Target cell, start the corresponding switching of Target cell
Wrong cell judges timer, if in Target cell RLF occurs for terminal simultaneously before the handoff error cell judges timer expiry
Other cells in addition to cell-of-origin and Target cell are selected to carry out RL reconstructions, then the number of times for switching the terminal into wrong cell adds
1；If terminal is from Target cell successful switch to except cell-of-origin and target are small before the handoff error cell judges timer expiry
Other cells outside area, the then number of times for switching the terminal into wrong cell plus 1.
Further, the statistic unit 30 is used for：
When the switching exception includes minizone pingpang handoff, when switching exception includes minizone pingpang handoff, connect
Receive after the measurement event that terminal is reported in cell-of-origin, selection target cell simultaneously performs terminal to the handoff procedure of Target cell,
If terminal successful switch is to Target cell, starts the corresponding pingpang handoff of Target cell and judge timer, if small in the target
The corresponding pingpang handoff in area judges before timer expiry that terminal goes back to cell-of-origin from Target cell successful switch, then by terminal from source
Cell adds 1 to the number of times of the minizone pingpang handoff of Target cell, and starts the corresponding pingpang handoff judgement timer in cell-of-origin；
If before the corresponding pingpang handoff in the cell-of-origin judges timer expiry, terminal returns Target cell from cell-of-origin successful switch, then
Minizone pingpang handoff number of times of the terminal from Target cell to cell-of-origin is added 1.
Further, the statistic unit 30 is used for：
When switching exception includes being switched to wrong cell and minizone pingpang handoff, receive terminal and reported in cell-of-origin
Measurement event after, selection target cell simultaneously performs terminal to the handoff procedure of Target cell, if switching complete before terminal exist
Cell-of-origin occurs RLF and selects other cells in addition to cell-of-origin and Target cell to carry out RL reconstructions, then switches the terminal into
The number of times of wrong cell adds 1；If terminal successful switch is to Target cell, starts the corresponding handoff error cell of Target cell and sentence
Determine timer and the corresponding pingpang handoff of Target cell judges timer, if sentencing in the corresponding handoff error cell of the Target cell
Determine terminal before timer expiry to occur RLF in Target cell and select other cells in addition to cell-of-origin and Target cell to carry out
RL is rebuild, then the number of times for switching the terminal into wrong cell plus 1；If judging fixed in the corresponding handoff error cell of the Target cell
When device time-out before terminal from Target cell successful switch to other cells in addition to cell-of-origin and Target cell, then terminal is cut
The number of times for changing to wrong cell plus 1；
If after the corresponding handoff error cell of the Target cell judges timer expiry and the corresponding table tennis of the Target cell
Before pang switching determination timer expiry, terminal goes back to cell-of-origin from Target cell successful switch, then by terminal from cell-of-origin to target
The number of times of the minizone pingpang handoff of cell adds 1, and starts the corresponding pingpang handoff judgement timer in cell-of-origin and cell-of-origin pair
The handoff error cell answered judges timer；If after the corresponding handoff error cell in the cell-of-origin judges timer expiry and
The corresponding pingpang handoff in the cell-of-origin judges before timer expiry that terminal returns Target cell from cell-of-origin successful switch, then starts
The corresponding pingpang handoff of Target cell judges timer and the corresponding handoff error cell of Target cell judges timer, and will eventually
The minizone pingpang handoff number of times from Target cell to cell-of-origin is held to add 1.
Further, the optimization unit 31 is used for：
Determine that whether terminal switches abnormal number of times in cell-of-origin more than threshold value set in advance, if so, then existing
When terminal is in the high-speed moving state defined in communication protocol, the numerical value of mobility control parameter is multiplied by high-speed moving state
Corresponding velocity factor, when terminal is in the middling speed mobile status defined in communication protocol, by the number of mobility control parameter
Value is multiplied by the corresponding velocity factor of middling speed mobile status.
Further, the optimization unit 31 is used for：
Determine that whether terminal is switched to the number of times of wrong cell more than threshold value set in advance, if so, then according to setting
The value and/or adjustment terminal of step-length adjustment cell personalization skew CIO parameters carry out the threshold value of nearby region measurement.
Further, the optimization unit 31 is used for：
Determine terminal carry out minizone pingpang handoff number of times whether be more than threshold value set in advance, if so, then according to
Set step-length adjustment s-measure parameters and/or switch the value of offset parameter.
Further, the optimization unit 31 is additionally operable to：
After being optimized to the handoff parameter of cell-of-origin, detecting system performance judges it is desirable according to testing result
Continue the value of adjustment handoff parameter or rollback handoff parameter, if desired continue to adjust handoff parameter, then will be walked according to setting
Length adjusts corresponding handoff parameter again, if desired the value of rollback handoff parameter, then carries out the value of corresponding handoff parameter
Retract.
To sum up, beneficial effects of the present invention include：
In scheme provided in an embodiment of the present invention, terminal is switched in cell-of-origin first on dynamic simulation platform different
Normal number of times is counted, and then the handoff parameter of cell-of-origin is optimized according to statistical result.Cut with of the prior art
Change parameter automatic optimization flow to compare, this programme does not need network side largely statistics switching problem and network for a long time
KPI indexs, so as to shorten the time required for performance of handoffs optimization, improve performance of handoffs optimization efficiency.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. the performance of handoffs optimization method in a kind of dynamic simulation platform, it is characterised in that this method includes：
The abnormal number of times that switched to terminal in cell-of-origin is counted；
The handoff parameter of cell-of-origin is optimized according to statistical result；
Wherein, the abnormal number of times that switched to terminal in cell-of-origin is counted, and is specifically included：
When switching exception includes being switched to wrong cell, after the measurement event that terminal is reported in cell-of-origin is received, selection
Target cell simultaneously performs terminal to the handoff procedure of Target cell, if in cell-of-origin Radio Link occurs for terminal before switching is completed
Failure RLF simultaneously selects other cells in addition to cell-of-origin and Target cell to carry out Radio Link RL reconstructions, then switches terminal
Number of times to wrong cell adds 1；If terminal successful switch is to Target cell, start the corresponding handoff error cell of Target cell
Timer is judged, if terminal occurs RLF in Target cell and selects to remove source before the handoff error cell judges timer expiry
Other cells outside cell and Target cell carry out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If at this
Handoff error cell judges that terminal is from Target cell successful switch in addition to cell-of-origin and Target cell before timer expiry
Other cells, the then number of times for switching the terminal into wrong cell plus 1；
When switching exception includes minizone pingpang handoff, receive after the measurement event that terminal is reported in cell-of-origin, select mesh
Mark cell simultaneously performs terminal to the handoff procedure of Target cell, if terminal successful switch starts Target cell to Target cell
Corresponding pingpang handoff judges timer, if before the corresponding pingpang handoff of the Target cell judges timer expiry, terminal from
Target cell successful switch goes back to cell-of-origin, then the number of times of the minizone pingpang handoff by terminal from cell-of-origin to Target cell adds 1,
And start the corresponding pingpang handoff judgement timer in cell-of-origin；If corresponding pingpang handoff judges timer expiry in the cell-of-origin
Before, terminal returns Target cell from cell-of-origin successful switch, then the minizone pingpang handoff by terminal from Target cell to cell-of-origin
Number of times adds 1；
When switching exception includes being switched to wrong cell and minizone pingpang handoff, receiving what terminal was reported in cell-of-origin
After measurement event, selection target cell simultaneously performs terminal to the handoff procedure of Target cell, if terminal is in source before switching is completed
Cell occurs RLF and selects other cells in addition to cell-of-origin and Target cell to carry out RL reconstructions, then switches the terminal into mistake
The number of times of cell adds 1 by mistake；If terminal successful switch is to Target cell, starts the corresponding handoff error cell of Target cell and judge
Timer and the corresponding pingpang handoff of Target cell judge timer, if judging in the corresponding handoff error cell of the Target cell
Terminal occurs RLF in Target cell and selects other cells in addition to cell-of-origin and Target cell to carry out RL before timer expiry
Rebuild, then the number of times for switching the terminal into wrong cell plus 1；If judging timing in the corresponding handoff error cell of the Target cell
Terminal then switches terminal from Target cell successful switch to other cells in addition to cell-of-origin and Target cell before device time-out
Number of times to wrong cell adds 1；If after the corresponding handoff error cell of the Target cell judges timer expiry and the target
The corresponding pingpang handoff of cell judges before timer expiry that terminal goes back to cell-of-origin from Target cell successful switch, then by terminal from
Cell-of-origin adds 1 to the number of times of the minizone pingpang handoff of Target cell, and starts the corresponding pingpang handoff judgement timing in cell-of-origin
The corresponding handoff error cell of device and cell-of-origin judges timer；If corresponding handoff error cell judges timing in the cell-of-origin
Before the corresponding pingpang handoff judgement timer expiry in after the device time-out and cell-of-origin, terminal returns target from cell-of-origin successful switch
Cell, then start the corresponding pingpang handoff of Target cell and judge that timer and the corresponding handoff error cell of Target cell judge fixed
When device, and minizone pingpang handoff number of times of the terminal from Target cell to cell-of-origin is added 1.
2. the method as described in claim 1, it is characterised in that the switching includes being switched to wrong cell and/or small extremely
Interval pingpang handoff.
3. the method as described in claim 1, it is characterised in that described to be carried out according to statistical result to the handoff parameter of cell-of-origin
Optimization, is specifically included：
Determine that whether terminal switches abnormal number of times in cell-of-origin more than threshold value set in advance, if so, then in terminal
During high-speed moving state defined in the communication protocol, the numerical value of mobility control parameter is multiplied by high-speed moving state correspondence
Velocity factor, terminal be in communication protocol defined in middling speed mobile status when, the numerical value of mobility control parameter is multiplied
With the corresponding velocity factor of middling speed mobile status.
4. the method as described in claim 1, it is characterised in that described to be carried out according to statistical result to the handoff parameter of cell-of-origin
Optimization, is specifically included：
Determine that whether terminal is switched to the number of times of wrong cell more than threshold value set in advance, if so, then according to setting step-length
The value and/or adjustment terminal for adjusting cell personalization skew CIO parameters carry out the threshold value of nearby region measurement.
5. the method as described in claim 1, it is characterised in that described to be carried out according to statistical result to the handoff parameter of cell-of-origin
Optimization, is specifically included：
Determine that whether terminal carries out the number of times of minizone pingpang handoff more than threshold value set in advance, if so, then according to setting
Step-length adjusts s-measure parameters and/or switches the value of offset parameter.
6. a kind of dynamic simulation apparatus, it is characterised in that the device includes：
Statistic unit, is counted for the abnormal number of times that switched to terminal in cell-of-origin, is included in the switching exception
When being switched to wrong cell, receive after the measurement event that terminal is reported in cell-of-origin, selection target cell simultaneously performs terminal and arrived
The handoff procedure of Target cell, if Radio Link Failure RLF occurs in cell-of-origin and selects except source is small for terminal before switching is completed
Other cells outside area and Target cell carry out Radio Link RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；
If terminal successful switch is to Target cell, starts the corresponding handoff error cell of Target cell and judge timer, if being cut at this
Change wrong cell and judge that terminal occurs RLF in Target cell and selected in addition to cell-of-origin and Target cell before timer expiry
Other cells carry out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If judging timing in the handoff error cell
Terminal then switches terminal from Target cell successful switch to other cells in addition to cell-of-origin and Target cell before device time-out
Number of times to wrong cell adds 1, when switching exception includes minizone pingpang handoff, receives the survey that terminal is reported in cell-of-origin
After amount event, selection target cell simultaneously performs terminal to the handoff procedure of Target cell, if terminal successful switch is to Target cell,
Then start the corresponding pingpang handoff of Target cell and judge timer, if judging timer in the corresponding pingpang handoff of the Target cell
Before time-out, terminal goes back to cell-of-origin from Target cell successful switch, then minizone of the terminal from cell-of-origin to Target cell is rattled
The number of times of switching adds 1, and starts the corresponding pingpang handoff judgement timer in cell-of-origin；If in the corresponding pingpang handoff in the cell-of-origin
Judge before timer expiry, terminal returns Target cell from cell-of-origin successful switch, then by terminal from Target cell to cell-of-origin
Minizone pingpang handoff number of times adds 1, when switching exception includes being switched to wrong cell and minizone pingpang handoff, receives end
Hold after the measurement event reported in cell-of-origin, selection target cell simultaneously performs terminal to the handoff procedure of Target cell, if cutting
Terminal before completing is changed RLF occurs in cell-of-origin and selects other cells in addition to cell-of-origin and Target cell to carry out RL reconstructions,
The number of times for then switching the terminal into wrong cell plus 1；If terminal successful switch is to Target cell, start Target cell corresponding
Handoff error cell judges that timer and the corresponding pingpang handoff of Target cell judge timer, if corresponding in the Target cell
Handoff error cell judges that terminal occurs RLF in Target cell and selected in addition to cell-of-origin and Target cell before timer expiry
Other cells carry out RL reconstructions, then the number of times for switching the terminal into wrong cell plus 1；If in the corresponding switching of the Target cell
Wrong cell judges that terminal is from Target cell successful switch to other in addition to cell-of-origin and Target cell before timer expiry
Cell, the then number of times for switching the terminal into wrong cell plus 1, if judging timing in the corresponding handoff error cell of the Target cell
After device time-out and before the corresponding pingpang handoff judgement timer expiry of the Target cell, terminal is returned from Target cell successful switch
Cell-of-origin, then the number of times of the minizone pingpang handoff by terminal from cell-of-origin to Target cell adds 1, and it is corresponding to start cell-of-origin
Pingpang handoff judges that the corresponding handoff error cell of timer and cell-of-origin judges timer；If in the corresponding switching in the cell-of-origin
Wrong cell is judged after timer expiry and the corresponding pingpang handoff in the cell-of-origin judges before timer expiry that terminal is small from source
Area's successful switch returns Target cell, then starts that the corresponding pingpang handoff of Target cell judges timer and Target cell is corresponding cuts
Change wrong cell and judge timer, and minizone pingpang handoff number of times of the terminal from Target cell to cell-of-origin is added 1；
Optimize unit, for being optimized according to statistical result to the handoff parameter of cell-of-origin.
7. device as claimed in claim 6, it is characterised in that the switching includes being switched to wrong cell and minizone extremely
Pingpang handoff.
8. device as claimed in claim 6, it is characterised in that the optimization unit is used for：
Determine that whether terminal switches abnormal number of times in cell-of-origin more than threshold value set in advance, if so, then in terminal
During high-speed moving state defined in the communication protocol, the numerical value of mobility control parameter is multiplied by high-speed moving state correspondence
Velocity factor, terminal be in communication protocol defined in middling speed mobile status when, the numerical value of mobility control parameter is multiplied
With the corresponding velocity factor of middling speed mobile status.
9. device as claimed in claim 6, it is characterised in that the optimization unit is used for：
Determine that whether terminal is switched to the number of times of wrong cell more than threshold value set in advance, if so, then according to setting step-length
The value and/or adjustment terminal for adjusting cell personalization skew CIO parameters carry out the threshold value of nearby region measurement.
10. device as claimed in claim 6, it is characterised in that the optimization unit is used for：
Determine that whether terminal carries out the number of times of minizone pingpang handoff more than threshold value set in advance, if so, then according to setting
Step-length adjusts s-measure parameters and/or switches the value of offset parameter.
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| CN106714236A (en) * | 2015-07-29 | 2017-05-24 | 中国移动通信集团公司 | Load balancing method and apparatus |
| CN106817732B (en) * | 2015-11-30 | 2019-06-07 | 展讯通信（上海）有限公司 | User terminal cross-mode method for handover control and device |
| CN107241756B (en) * | 2016-03-28 | 2020-11-10 | 中兴通讯股份有限公司 | Method and device for judging and intercommunicating ping-pong handover between access networks |
| CN107734529A (en) * | 2017-11-30 | 2018-02-23 | 广东欧珀移动通信有限公司 | The detection method and device of network insertion result, computer-readable storage medium |
| CN107969013B (en) * | 2017-11-30 | 2020-08-18 | Oppo广东移动通信有限公司 | Method and device for detecting network access result and computer storage medium |
| CN108024272A (en) * | 2017-11-30 | 2018-05-11 | 广东欧珀移动通信有限公司 | The detection method and device of network insertion result, computer-readable storage medium |
| CN107995652B (en) * | 2017-11-30 | 2020-07-31 | Oppo广东移动通信有限公司 | Method and device for detecting network access result and computer storage medium |
| CN107948994A (en) * | 2017-11-30 | 2018-04-20 | 广东欧珀移动通信有限公司 | The detection method and device of network insertion result, computer-readable storage medium |
| CN109600806B (en) | 2018-12-25 | 2021-04-20 | 深圳市万普拉斯科技有限公司 | Network switching method and device, computer equipment and storage medium |
| CN109362100B (en) * | 2018-12-26 | 2021-08-03 | 中国联合网络通信集团有限公司 | Base station evaluation method and system based on communication signaling |
| WO2021226982A1 (en) * | 2020-05-15 | 2021-11-18 | Qualcomm Incorporated | Measurement report offset increase for avoiding ping-pong between long term evolution cells in non-stand-alone mode |
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| CN102065498A (en) * | 2009-11-13 | 2011-05-18 | 中兴通讯股份有限公司 | Switching information processing method and base station |
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