CN104113863B - A kind of method and device of handover optimization - Google Patents
A kind of method and device of handover optimization Download PDFInfo
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- CN104113863B CN104113863B CN201410339210.3A CN201410339210A CN104113863B CN 104113863 B CN104113863 B CN 104113863B CN 201410339210 A CN201410339210 A CN 201410339210A CN 104113863 B CN104113863 B CN 104113863B
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Abstract
An embodiment of the present invention provides a kind of method and device of handover optimization, this method includes：Continuously acquire the corresponding at least one interference instruction of M detection cycle, and whether the number for the interference instruction for judging to obtain is more than or equal to the first predetermined threshold value, if the number of the interference instruction obtained is more than or equal to the first predetermined threshold value, then the detection threshold value of serving cell is heightened to desired value stepwise, so that the UE under serving cell can switch to Target cell from serving cell in time according to the detection threshold value after adjustment.This addresses the problem when serving cell is in strong jamming state, the UE under serving cell can be switched out in time, ensured the speech quality of UE, also improved the communication robust of serving cell.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of method and device of handover optimization.
Background technology
In a wireless communication system, in order to which full wafer geographic area is carried out signal covering, dispose according to macro base station, usually need
The region is carried out rationally meticulously planning and designing so that can provide to mobile terminal in whole geography scope preferable
Covering.Grand Netcom, which is crossed, artificially carries out the network planning,, can be to most of region by reasonably planning in planning region
Covered, can be user equipment (English：User Equipment, referred to as：UE) business is provided, nonetheless, still can
There is the place not covered, will be unable to provide service for UE in this kind of region or the service met the requirements, serious shadow are provided
UE perception is rung.
Further, since the region that business occurs for current UE is increasingly intended to interior, especially room area big data industry
The demand of business, so the indoor emphasis for becoming current network and planning and optimizing.But due to unique channel of indoor wireless environments
Characteristic, and the characteristic of interior architecture so that grand net signal passes through the stop of interior architecture thing (such as wall, door and window etc.) so that
Indoor signal is there are weak covering phenomenon, and to solve the problems, such as in-door covering, industry proposes the concept of Home eNodeB, with macro base station not
Together, Home eNodeB is generally deployed in subscriber household, and provides plug-and-play feature, its network planning degree is relatively low.
Femto base station, also known as Femto base stations, are mainly directed towards average family and medium-sized and small enterprises client, are a kind of coverings
The less NodeB equipment of scope, for improving the in-door covering of 3G network.
Since Femto base stations are plug and play, reduce the work of artificial network's planning, but region may go out indoors
The existing grand stronger phenomenon of net signal, but arbitrarily laying due to the use of person, Femto base stations provide the same of business for UE indoors
When, the UE under Femto base stations may be subject to larger interference, especially co-channel interference, it will seriously affect user's perception.
Current switchover policy, such as during same frequency switching, substantially consider to work as the received neighboring area signals of UE under base station
Intensity is higher than one definite value of this serving cell, and this serving cell is less than serving cell detection threshold, can just perform switchover policy.
But when grand net homogeneous-frequency adjacent-domain covering signal is stronger, since UE is also located at relatively at center of Femto base station ranges at this time, no
Serving cell detection threshold can be less than, switchover policy will not be performed, with UE to same frequency it is grand net adjacent area walk close to when, what is be subject to is same
Frequency interference will constantly increase, and seriously affect the link-quality of UE and Femto base stations, most probably cause service fail.
In addition at present the adjustable strategies of handoff parameter are generally focused on solving pingpang handoff, and serving cell is in
When under disturbance state, the UE under serving cell will be unable to perform switching, so that cause the communication link of serving cell second-rate,
The problem of even causing serving cell service fail.
The content of the invention
A kind of method and device of handover optimization is provided in the embodiment of the present invention, interference is in solve serving cell
When under state, the communication link of serving cell is second-rate, or even the problem of UE service fails in the serving cells can be caused.
Its specific technical solution is as follows：
A kind of method of handover optimization, including：
The corresponding at least one interference instruction of M detection cycle is continuously acquired, the interference instruction characterizes serving cell
Signal quality, wherein, disturb the number of instruction to be less than or equal to the number of detection cycle, M is positive integer more than or equal to 1；
Whether the number for the interference instruction for judging to obtain is more than or equal to the first predetermined threshold value；
If the number of the interference instruction obtained is more than or equal to the first predetermined threshold value, by the detection door of the serving cell
Limit value is heightened to desired value stepwise.
Optionally, before the corresponding at least one interference instruction of M detection cycle is continuously acquired, further include：
In a detection cycle, A interference for characterizing the intensity that the signal of the serving cell is disturbed is continuously acquired
Value, A are the positive integer more than or equal to 1；
If the A is more than or equal to the second predetermined threshold value, the corresponding interference instruction of the detection cycle is generated.
Optionally, heighten to before desired value, further include stepwise by the detection threshold value of the serving cell：
Count UE in the serving cell from the serving cell switch to Target cell during caused switching
The frequency of failure；
The handoff failure number based on interference is determined in the handoff failure number；
And heightened stepwise to desired value by the detection threshold value of the serving cell, further include：
If it is determined that going out the handoff failure number based on interference is more than or equal to the 3rd predetermined threshold value, then obtain at least one
Received signal power value, and determine maximum receiving signal performance number at least one received signal power value；
Judge whether the maximum receiving signal performance number is more than the desired value；
If the maximum receiving signal performance number is more than the desired value, by the detection threshold value of the serving cell from institute
Desired value is stated to adjust to the maximum receiving signal performance number determined.
A kind of method of handover optimization, including：
UE in statistical fractals cell from the serving cell switch to Target cell during caused handoff failure
Number；
The handoff failure number based on interference is determined in the handoff failure number；
Whether the handoff failure number based on interference for judging to determine is more than or equal to the 4th predetermined threshold value；
If the handoff failure number based on interference is more than or equal to the 4th predetermined threshold value, obtains at least one receive and believe
Number performance number, and determine maximum receiving signal performance number as adjusted value at least one received signal power value；
The detection threshold value of the serving cell is adjusted to the adjusted value.
Optionally, adjust to before the adjusted value, further include by the current detection threshold value of the serving cell：
In a detection cycle, continuously acquire and characterize at least one of the intensity that the signal of the serving cell is disturbed
Interference value；
If the number of at least one interference value obtained is more than or equal to the 5th predetermined threshold value, the detection week is generated
Phase corresponding interference instruction；
The corresponding at least one interference instruction of N number of detection cycle is continuously acquired, wherein, disturb the number of instruction to be less than or equal to
The number of detection cycle, N are the positive integer more than or equal to 1；
Adjust to the adjusted value, further include by the detection threshold value of the serving cell：
If it is determined that the number of the interference instruction obtained is more than or equal to the 6th predetermined threshold value, by the inspection of the serving cell
Threshold value is surveyed to adjust stepwise to desired value from the adjusted value.
A kind of method of handover optimization, including：
Obtain the examining report of reported by user equipment UE；
Parse and alarm instruction whether is carried in the examining report；
If alarm instruction is carried in the examining report, it is determined that go out a Target cell, and the alarm will be reported to refer to
The UE shown switches to the Target cell.
Optionally, the alarm instruction is specially UE error loop redundancies in global cycle redundancy check code is detected
Check code reaches the instruction generated during seven predetermined threshold values.
Optionally, determine a Target cell, and the UE for reporting the alarm instruction is switched into the Target cell, wrap
Include：
At least one received signal power value is obtained in the examining report, wherein, a received signal power value pair
Answer a Target cell；
Maximum receiving signal performance number is determined at least one received signal power value of acquisition, and is determined
The corresponding Target cell of the maximum receiving signal performance number；
The UE for reporting the alarm instruction is switched into the corresponding Target cell of the maximum receiving signal performance number.
Optionally, after the UE for reporting the alarm instruction is switched to the Target cell, further include：
Count the UE in the serving cell and switch to caused handoff failure number during the Target cell；
The handoff failure number based on interference is determined in the handoff failure number；
When the handoff failure number based on interference is more than or equal to eight predetermined threshold values, at least one reception signal work(is obtained
Rate value；
Maximum receiving signal performance number is determined at least one received signal power value of acquisition；
The detection threshold value of the serving cell is adjusted to the maximum receiving signal performance number.
A kind of device of handover optimization, including：
First acquisition module, for continuously acquiring the corresponding at least one interference instruction of M detection cycle, the interference refers to
Show the signal quality for characterizing serving cell, wherein, disturb instruction number be less than or equal to detection cycle number, M be more than
Positive integer equal to 1；
Whether determination module, the number of the interference instruction for judging to obtain are more than or equal to the first predetermined threshold value；
First adjustment module, if the number of the interference instruction for obtaining is more than or equal to the first predetermined threshold value, by institute
The detection threshold value for stating serving cell is heightened to desired value stepwise.
Optionally, described device further includes：
Second acquisition module, the signal that the serving cell is characterized in a detection cycle, continuously acquiring are done
A interference value of the intensity disturbed, A are the positive integer more than or equal to 1；
Generation module, if being more than or equal to the second predetermined threshold value for the A, generates the corresponding interference of the detection cycle
Instruction.
Optionally, described device further includes：
Statistical module, switches to during Target cell for counting the UE in the serving cell from the serving cell
Caused handoff failure number；
Determining module, for determining the handoff failure number based on interference in the handoff failure number；
Processing module, for if it is determined that going out the handoff failure number based on interference is more than or equal to the 3rd predetermined threshold value,
At least one received signal power value is then obtained, and determines that maximum receive is believed at least one received signal power value
Number performance number；
Determination module, for judging whether the maximum receiving signal performance number is more than the desired value；
Second adjustment module, if be more than the desired value for the maximum receiving signal performance number, by the service
The detection threshold value of cell is adjusted to the maximum receiving signal performance number determined from the desired value.
A kind of device of handover optimization, including：
Statistical module, switches to during Target cell from the serving cell for the UE in statistical fractals cell and is produced
Raw handoff failure number；
Determining module, for determining the handoff failure number based on interference in the handoff failure number；
Determination module, for that whether the handoff failure number based on interference described in judging to determine is more than or equal to be the 4th pre-
If threshold value；
First acquisition module, if being more than or equal to the 4th predetermined threshold value for the handoff failure number based on interference,
At least one received signal power value is obtained, and maximum receiving signal is determined at least one received signal power value
Performance number is as adjusted value；
First adjustment module, for adjusting the detection threshold value of the serving cell to the adjusted value.
Optionally, described device further includes：
Second acquisition module, is additionally operable in a detection cycle, continuously acquires the signal quilt for characterizing the serving cell
At least one interference value of the intensity of interference；
Generation module, if the number of at least one interference value for obtaining is more than or equal to the 5th predetermined threshold value,
Generate the corresponding interference instruction of the detection cycle；
3rd acquisition module, for continuously acquiring the corresponding at least one interference instruction of N number of detection cycle, wherein, interference
The number of instruction is less than or equal to the number of detection cycle, and N is the positive integer more than or equal to 1；
Second adjustment module, for if it is determined that the number of the interference instruction obtained is more than or equal to the 6th predetermined threshold value
When, the detection threshold value of the serving cell is adjusted to desired value stepwise from the adjusted value.
A kind of device of handover optimization, including：
First acquisition module, for obtaining the examining report of reported by user equipment UE；
Whether parsing module, alarm instruction is carried for parsing in the examining report；
Processing module, if for carrying alarm instruction in the examining report, it is determined that go out a Target cell, and will be upper
The UE of the alarm instruction is reported to switch to the Target cell.
Optionally, the processing module includes：
Acquiring unit, for obtaining at least one received signal power value in the examining report, wherein, a reception
Signal power value corresponds to a Target cell；
Determination unit, for determining maximum receiving signal work(at least one received signal power value of acquisition
Rate value, and determine the corresponding Target cell of the maximum receiving signal performance number；
Processing unit, it is corresponding for the UE for reporting the alarm instruction to be switched to the maximum receiving signal performance number
The Target cell.
Optionally, described device further includes：
Statistical module, for counting caused by the UE in the serving cell switched to during the Target cell
Handoff failure number；
First determining module, for determining the handoff failure number based on interference in the handoff failure number；
Second acquisition module, for when the handoff failure number based on interference is more than or equal to eight predetermined threshold values, obtaining
At least one received signal power value；
Second determining module, for determining that maximum receive is believed at least one received signal power value of acquisition
Number performance number；
Module is adjusted, for adjusting the detection threshold value of the serving cell to the maximum receiving signal performance number.
An embodiment of the present invention provides a kind of method of handover optimization, this method includes：Continuously acquire M detection cycle pair
At least one interference instruction answered, and whether the number for the interference instruction for judging to obtain is more than or equal to the first predetermined threshold value, if
The number of the interference instruction of acquisition is more than or equal to the first predetermined threshold value, then heightens the detection threshold value of serving cell to mesh stepwise
Scale value, so that UE switches to Target cell according to the detection threshold value after adjustment from serving cell.Pass through the side of the handover optimization
Method, can solve when serving cell is in strong jamming state, the UE under serving cell can be switched out in time, avoid taking
There is the problem of service fail in UE under business cell, also improves the communication robust of serving cell.
The embodiment of the present invention additionally provides a kind of method of handover optimization, and this method includes：UE in statistical fractals cell
From serving cell switch to Target cell during caused handoff failure number, determine to be based in handoff failure number
The handoff failure number of interference, if the handoff failure number based on interference is more than or equal to the 4th predetermined threshold value, obtains at least one
A received signal power value, and determine maximum receiving signal performance number as adjustment at least one received signal power value
Value, finally adjusts the detection threshold value of serving cell to adjusted value, so that the signal of serving cell is subject to larger interference
When, serving cell can timely heighten detection threshold value, so that be that the UE of serving cell can be switched out as soon as possible, and then
The problem of UE under guarantee serving cell is not in service fail.
A kind of method of handover optimization is additionally provided in the embodiment of the present invention, this method includes：Obtain the detection that UE is reported
Whether report, carry alarm instruction in resolved detection report, if carrying alarm instruction in examining report, it is determined that go out
One Target cell, and by report and alarm indicate UE switch to Target cell, that is to say, that serving cell signal be subject to compared with
Strong jamming, so that when UE report and alarms indicate, serving cell will timely indicate UE that report and alarm indicates, and to switch to target small
Area, so as to avoid the problem that service fail occurs in the serving cells in UE.
Brief description of the drawings
Fig. 1 is a kind of method flow diagram of handover optimization in the embodiment of the present invention；
Fig. 2 is the switching flow figure between a kind of UE and serving cell, Target cell in the embodiment of the present invention；
Fig. 3 is the method flow diagram of another handover optimization in the embodiment of the present invention；
Fig. 4 is the method flow diagram of another handover optimization in the embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the device of handover optimization in the embodiment of the present invention；
Fig. 6 is the schematic diagram of the device of another handover optimization in the embodiment of the present invention；
Fig. 7 is the schematic diagram of the device of another handover optimization in the embodiment of the present invention.
Embodiment
Elaborate below by attached drawing and specific embodiment to technical solution of the present invention.
Embodiment one：
An embodiment of the present invention provides a kind of method of handover optimization, this method includes：Continuously acquire M detection cycle pair
At least one interference instruction answered, and whether the number for the interference instruction for judging to obtain is more than or equal to the first predetermined threshold value, if
The number of the interference instruction of acquisition is more than or equal to the first predetermined threshold value, then heightens the detection threshold value of serving cell to mesh stepwise
Scale value, so that can to switch to target from serving cell in time according to the detection threshold value after adjustment small by the UE under serving cell
Area.This addresses the problem when serving cell is in strong jamming state, the UE under serving cell can be switched out in time, be ensured
The speech quality of UE, also improves the communication robust of serving cell.
It is a kind of flow chart of the method for handover optimization in the embodiment of the present invention as shown in Figure 1, this method includes：
S101, continuously acquires the corresponding at least one interference instruction of M detection cycle；
Whether S102, the number for the interference instruction for judging to obtain are more than or equal to the first predetermined threshold value；
S103, if the number of the interference instruction obtained is more than or equal to the first predetermined threshold value, by the detection threshold of serving cell
Value is heightened to desired value stepwise.
The desired value for serving cell detection threshold value adjust stepwise after value, the definite value of the non-artificial setting of the value.
Specifically, an interference threshold is provided with the serving cells, if the signal of adjacent cell is in the serving cells
Intensity when exceeding the interference threshold, then generate an interference value, which can be characterized with 1, and interference value is 1 just explanation
The signal of adjacent cell to the signal of serving cell causes stronger interference.
A detection cycle is provided with the serving cells, in the detection cycle, it is determined whether generation has interference value, if
There is interference value generation, then record the interference value number got in the detection cycle.
If getting A interference value in a detection cycle, judge whether A is more than or equal to the second predetermined threshold value, if A is more than
Equal to the second predetermined threshold value, then an interference instruction is generated, if A is less than the second predetermined threshold value, is generated non-in the detection cycle
Interference instruction.
Then at least one interference instruction of M detection cycle is continuously acquired, is established a capital due to differing in each detection cycle
Interference instruction can be obtained, so the number of interference instruction is less than or equal to the number of detection cycle, such as 5 detection cycles obtain
4 interference instructions, M are the positive integer more than or equal to 1.
The number that the interference of acquisition is indicated is compared with the first predetermined threshold value, if what is obtained in M detection cycle is dry
The number for disturbing instruction is more than or equal to the first predetermined threshold value, then heightens the detection threshold value of serving cell stepwise so that reside in clothes
UE under business cell can switch to Target cell from serving cell in time.
Such as：The detection threshold value of serving cell is -70dBm, when the number of interference instruction is more than or equal to the first default threshold
Value, then the detection threshold value of serving cell is adjusted to -60dBm stepwise, that is, in the detection threshold value of serving cell by
Rank increases 10dBm, i.e.,：- 60dBm is adjusted to from -70dBm.The 10dBm is increased step-length stepwise, specific size can by with
Family oneself defines.After detection threshold value is adjusted, as long as the received signal power value of UE, up to or over -60dBm, UE is just
It can be switched out from serving cell, the detection threshold value is bigger, and the UE under serving cell is more easily switched out, because
This, after the detection threshold value of adjustment serving cell, the UE under serving cell is easier to switch out from serving cell, from
And avoid UE and the problem of service fail occur in the serving cell being disturbed.
Further, in embodiments of the present invention, it is also an option that property perform following steps：
Before handoff parameter of the interference instruction to adjust serving cell is obtained, can with the UE in statistical fractals cell from
Serving cell switches to during Target cell the handoff failure number produced, then in the handoff failure number counted on really
Make the handoff failure number based on interference.
The handoff failure based on interference can obtain by the following method in embodiments of the present invention：
During the timer expiry either timer expiry of network side of serving cell side, receive lock-out and disappear
Breath, then be denoted as a handoff failures of the UE based on interference.
For example as shown in Fig. 2, judge that the TRELOCoverall timers in Fig. 2 serving cells are opened into
Whether the TRELOCoverall timer down periods receive lock-out message, if receiving, UE is based on interference for note
Handoff failure, similarly, TRELOComplete timer closed-down periods is opened into the TRELOComplete timers of Target cell
Between, if receiving lock-out message, remember a handoff failures of the UE based on interference.
If the handoff failure number based on interference counted on is more than or equal to the 3rd predetermined threshold value, obtains UE and upload extremely
A few received signal power value, and determine maximum receiving signal power at least one received signal power value of acquisition
Value, then judges whether maximum receiving signal performance number is more than desired value, if maximum receiving signal performance number is more than desired value,
The detection threshold value of serving cell is adjusted to the maximum receiving signal performance number determined from desired value.Such as：Determine at this time
It is -45dBm to go out maximal received power value, then the detection threshold value of serving cell will be adjusted to -45dBm from -60dBm previous.
Certainly, if maximum receiving signal performance number is less than desired value, original desired value can be retained and do not adjusted.
Further, after the cell handoff parameter of serving cell is adjusted to maximal received power value, will continue to obtain
The continuously corresponding at least one interference instruction of M detection cycle, if the number of the interference instruction obtained in M detection cycle
Still above the detection threshold value for equal to the first predetermined threshold value, then further tuning up serving cell stepwise, such as：Serving cell is examined
Survey threshold value and be adjusted to -45dBm from -60dBm, if the interference value detected at this time is also greater than waiting the first predetermined threshold value,
Detection threshold value will be adjusted to -35dBm stepwise from -45dBm；If the number of the interference instruction obtained in M detection cycle is small
In the first predetermined threshold value, then illustrate that the signal of Target cell weakens the signal interference of serving cell, at this time by serving cell
Detection threshold adjusts back the detection threshold value before serving cell adjustment from maximum receiving signal performance number stepwise.For example it will take
The detection threshold value of business cell is recalled to as -40dBm stepwise from -35dBm.I.e. on the basis of the detection threshold value of serving cell stepwise
Reduce 5dBm, which is the step-length reduced stepwise, and specific size can be defined by user oneself.Briefly, when target is small
When interference of the area to serving cell is smaller, serving cell will turn down detection threshold value, so that the UE under serving cell will not
Cell switching is carried out easily, and then avoids the problem that handoff failure occurs in UE.
Embodiment two：
The method that the embodiment of the present invention provides another handover optimization is illustrated in figure 3, this method includes：
S301, UE in statistical fractals cell from serving cell switch to Target cell during caused handoff failure
Number；
S302, determines the handoff failure number based on interference in handoff failure number；
Whether S303, the handoff failure number based on interference for judging to determine are more than or equal to the 4th predetermined threshold value；
S304, if the handoff failure number based on interference is more than or equal to the 4th predetermined threshold value, obtains at least one reception
Signal power value, and determine maximum receiving signal performance number as adjusted value at least one received signal power value；
S305, the detection threshold value of serving cell is adjusted to adjusted value.
During UE under serving cell switches to Target cell, serving cell is by under statistical fractals cell in real time
UE produces the number of handoff failure, the handoff failure number based on interference is then determined in the handoff failure number, specifically
The handoff failure number based on interference can be counted by the following method：
During the timer expiry either timer expiry of network side of serving cell side, receive lock-out and disappear
Breath, then be denoted as a handoff failures of the UE based on interference.
For example as shown in Fig. 2, judge that the TRELOCoverall timers in Fig. 2 serving cells are opened into
Whether the TRELOCoverall timer down periods receive lock-out message, if receiving, UE is based on interference for note
Handoff failure, similarly, TRELOComplete timer closed-down periods is opened into the TRELOComplete timers of Target cell
Between, if receiving lock-out message, remember a handoff failures of the UE based on interference.
After the handoff failure number based on interference is counted on, judge whether the handoff failure number based on interference is more than
Equal to the 4th predetermined threshold value, if the handoff failure number based on interference is more than or equal to four predetermined threshold values, then obtain at least
One received signal power value, then determines a maximum receiving signal power at least one received signal power value
Value, using the maximum receiving signal performance number as adjusted value.
Finally the detection threshold value of serving cell is adjusted to adjusted value, such as：Maximal received power is -55dBm, clothes
The current detection threshold value of cell of being engaged in is -70dBm, at this time the detection threshold value of serving cell will be adjusted from -70dBm to -
55dBm.This ensure that serving cell, when receiving larger interference, serving cell makes service small by adjusting detection threshold value
UE under area can be switched out from serving cell in time.
In embodiments of the present invention, it is also an option that property perform following steps：
Before serving cell is counted based on handoff parameter of the handoff failure of interference to adjust serving cell, the service is small
Area continuously acquires at least one interference value of intensity that the signal of characterization serving cell is disturbed in a detection cycle, if
It is that the number of at least one interference value obtained is more than or equal to the 5th predetermined threshold value, then generates corresponding disturb of the detection cycle and refer to
Show, the corresponding at least one interference instruction of N number of detection cycle is then continuously acquired, since a detection cycle can not necessarily generate
Interference instruction, so the number of interference instruction is less than the number of detection cycle.
If the number of the interference instruction obtained in N number of detection cycle is more than or equal to the 6th predetermined threshold value, by serving cell
Detection threshold value adjusted stepwise to desired value from adjusted value, after which adjusts for serving cell detection threshold value stepwise
Value, the definite value of the non-artificial setting of the value.
Such as：By count the handoff failure number based on interference, by the detection threshold value of serving cell adjust to-
55dBm, then when the number of obtained interference instruction is more than or equal to six predetermined threshold values, then on the basis of -55dBm stepwise
Increase 10dBm, that is, the detection threshold value of serving cell is adjusted to -45dBm from -55dBm.The 10dBm is to increase stepwise
Step-length, specific size can define by user oneself.So so that when serving cell is in strongly disturbing state, service is small
UE under area can be switched out in time, avoid the problem that UE service fail occurs under serving cell.
Embodiment three：
What is illustrated in embodiment one is to realize the handover optimization of UE based on the Interference Detection of cell, is then in embodiment two
The handover optimization of UE is realized based on the Interference Detection of UE, is illustrated in figure 4 a kind of side of handover optimization in the embodiment of the present invention
Method flow chart, this method include：
S401, obtains the examining report that UE is reported；
Specifically, UE is based on bLock error rate (English：Block Error Ratio, referred to as：BLER) testing mechanism is sentenced
The fixed link communication quality between serving cell.
When UE sets up service bearer, base station can be by measuring each business configuration global cycle that control message is UE
Redundancy check code (Total Cyclical Redundancy Check, referred to as：Total CRC), error loop redundancy check code
Thresholding Bad CRC, thresholding Pending after trigger to be triggered.
Whether UE can detect the sum of the error loop redundancy check code in Total CRC in real time more than Bad CRC, this
In Bad CRC be the 7th predetermined threshold value, if error loop redundancy check code sum more than the 7th predetermined threshold value, then say
Link between bright UE and serving cell is poor, needs report and alarm to indicate at this time, to reach Pending after certainly
After trigger CRC, UE can just report the alarm to indicate, if being not reaching to Pending after trigger CRC,
Then UE will not report and alarm instruction.
The alarm instruction reported will be carried in examining report.
In addition, the reception of the Primary Common Control Physical Channel of the serving cell residing for UE is also carried in the examining report
Signal code power (PCCPCH Received Signal Code Power, referred to as：PCCPCH RSCP) and Target cell
PCCPCH RSCP。
Whether S402, carry alarm instruction in resolved detection report；
After examining report is received, parse in the examining report with the presence or absence of alarm instruction, if being not present, flow
Terminate；If in the presence of performing S403.
S403, if carrying alarm instruction in examining report, it is determined that go out a Target cell, and report and alarm is indicated
UE switches to Target cell.
When there is alarm instruction in the examining report that UE is reported, it is thus necessary to determine that go out a Target cell, then will service
The UE that report and alarm indicates in cell switches to the Target cell.Target cell can be determined by following method：
Obtain the received signal power value of at least one adjacent cell carried in examining report and the reception of serving cell
Signal power value.I.e.：The PCCPCH RSCP of the serving cell and PCCPCH RSCP of adjacent cell, use Local_ herein
PCCPCH_RSCP represents the PCCPCH RSCP of serving cell, and adjacent cell is represented with Neighbor_PCCPCH_RSCP
PCCPCH RSCP。
Local_PCCPCH_RSCP in examining report only has one, but can there are at least one adjacent cell to correspond to
Neighbor_PCCPCH_RSCP, the corresponding Neighbor_PCCPCH_RSCP of adjacent cell is then brought into following verification
Verified in condition：
Wherein, K is default first threshold value, and J is default second threshold value.
Specifically, if the Neighbor_PCCPCH_RSCP of some adjacent cell is more than or equal to K, and the adjacent cell
Neighbor_PCCPCH_RSCP and serving cell Local_PCCPCH_RSCP between difference when being more than or equal to J, explanation
The signal quality of the adjacent cell is preferable, it is determined that the adjacent cell is the UE Target cells to be switched.
If meeting the adjacent cell more than one of above-mentioned condition, determined first in the adjacent cell for meet above-mentioned condition with
Serving cell is the adjacent cell of alien frequencies, then determines there is maximum Neighbor_PCCPCH_RSCP in the adjacent cell of alien frequencies
Adjacent cell as the UE Target cells to be switched；If meet to be not present and serving cell alien frequencies in the adjacent cell of above-mentioned condition
Target cell, just determine in the adjacent cell of same frequency the adjacent cell work with maximum Neighbor_PCCPCH_RSCP at this time
For the UE Target cells to be switched.
In the scheme of embodiment three, exist in detecting the examining report that UE is reported between characterization UE and serving cell
Communication link it is second-rate alarm instruction when, it is determined that go out a Target cell for meeting condition, then by serving cell
The UE of middle report and alarm instruction switches to Target cell from serving cell, this ensure that being subject to Target cell to do in serving cell
When disturbing, the UE in serving cell edge, that is, the UE of report and alarm instruction can be switched out from serving cell in time,
There is the problem of call drop so as to avoid UE, ensure that speech quality, also improve the communication robust of serving cell.
Further, in embodiments of the present invention, real-time geo-statistic is also switched into Target cell in UE from serving cell
During there is the number of handoff failure, and the handoff failure number based on interference is determined in the number of handoff failure, led to
The handoff failure number based on interference is crossed to decide whether that the detection threshold value to serving cell is adjusted, cutting based on interference
As soon as it is identical with the mode in embodiment to change frequency of failure statistics, repeat no more herein.
After the handoff failure number based on interference is obtained, judge whether the handoff failure number based on interference is more than
In the 8th predetermined threshold value, if the handoff failure number based on interference is more than or equal to the 8th predetermined threshold value, reported at least in UE
Maximum receiving signal performance number is determined in one received signal power value, then by the current detection threshold value in serving cell
Adjust to maximum receiving signal performance number, for example serving cell current detection threshold value is -70dBm, and maximum receiving signal work(
Rate value is -55dBm, and the detection threshold value of serving cell will be adjusted to -55dBm from -70dBm at this time.
After adjusted value is determined, the current detection threshold value of serving cell is adjusted to the adjusted value determined.
In addition, after the cell handoff parameter of serving cell is adjusted to adjusted value, it will continue to count UE based on interference
Handoff failure number, if handoff failure numbers of the UE based on interference continues from current still greater than equal to the 8th predetermined threshold value
Maximum receiving signal performance number is determined at least one received signal power value that UE is reported, if current maximum receiving signal
Performance number is bigger than adjusted value before, then current maximum receiving signal performance number is set to the detection threshold value of serving cell,
If current maximum receiving signal performance number is smaller than adjusted value before, before the detection threshold value of serving cell remains
Adjusted value.For example serving cell detection threshold value is adjusted to -55dBm, if handoff failure numbers of the UE based on interference is still big
In equal to the 8th predetermined threshold value, and maximum receiving signal performance number at least one received signal power value for reporting of current UE
For -50dBm, then the detection threshold value of serving cell should be adjusted to -50dBm at this time；If handoff failure numbers of the UE based on interference
Still greater than equal to the 8th predetermined threshold value, and maximum receiving signal power at least one received signal power value that current UE reports
It is worth for -60dBm, then the detection threshold value of serving cell should remain -55dBm at this time.If switchings of the UE based on interference at this time is lost
Lose number and be less than the 8th predetermined threshold value, then illustrate that the signal of Target cell weakens the signal interference of serving cell, continue at this time
Maximum receiving signal performance number is determined at least one received signal power value reported from current UE, if current maximum connects
Collection of letters performance number is bigger than adjusted value before, then the adjusted value before the detection threshold value of serving cell remains；It is if current
Maximum receiving signal performance number it is smaller than adjusted value before, then current maximum receiving signal performance number is set to serving cell
Detection threshold value.For example serving cell detection threshold value is adjusted to -55dBm, if handoff failures of the UE based on interference
Number is less than the 8th predetermined threshold value, and maximum receiving signal performance number at least one received signal power value for reporting of current UE
For -50dBm, then the detection threshold value of serving cell should remain -55dBm at this time；If handoff failure numbers of the UE based on interference
Less than the 8th predetermined threshold value, and at least one received signal power value that current UE reports maximum receiving signal performance number for-
60dBm, then the detection threshold value of serving cell should be adjusted to -60dBm at this time.Briefly, when Target cell is to serving cell
Interference it is smaller when, serving cell will turn down detection threshold value, so that the UE under serving cell will not carry out cell easily
Switching, also avoids the problem that service fail occurs in UE.
Example IV：
A kind of method of handover optimization in corresponding embodiment one, the embodiment of the present invention additionally provide a kind of handover optimization
Device, is illustrated in figure 5 the structure diagram of the handover optimization device, which includes：
First acquisition module 501, it is described dry for continuously acquiring the corresponding at least one interference instruction of M detection cycle
The signal quality that instruction characterizes serving cell is disturbed, wherein, disturb the number of instruction to be less than or equal to the number of detection cycle, M is
Positive integer more than or equal to 1；
Whether determination module 502, the number of the interference instruction for judging to obtain are more than or equal to the first predetermined threshold value；
First adjustment module 503, will if the number of the interference instruction for obtaining is more than or equal to the first predetermined threshold value
The detection threshold value of the serving cell is heightened to desired value stepwise.
Further, which further includes：
Second acquisition module, the signal that the serving cell is characterized in a detection cycle, continuously acquiring are done
A interference value of the intensity disturbed, A are the positive integer more than or equal to 1；
Generation module, if being more than or equal to the second predetermined threshold value for the A, generates the corresponding interference of the detection cycle
Instruction.
Further, which further includes：
Statistical module, switches to during Target cell for counting the UE in the serving cell from the serving cell
Caused handoff failure number；
Determining module, for determining the handoff failure number based on interference in the handoff failure number；
Processing module, for if it is determined that going out the handoff failure number based on interference is more than or equal to the 3rd predetermined threshold value,
At least one received signal power value is then obtained, and determines that maximum receive is believed at least one received signal power value
Number performance number；
Determination module, for judging whether maximal received power value is more than desired value；
Second adjustment module, if being more than desired value for maximum receiving signal performance number, by the detection of the serving cell
Threshold value is adjusted to the maximum receiving signal performance number determined from the desired value.
Wherein, the first acquisition module and the second acquisition module can be same module, the first adjustment module and second adjustment
Module can be same module.
Embodiment five：
A kind of method of handover optimization in corresponding embodiment two, the embodiment of the present invention additionally provide a kind of handover optimization
Device, is illustrated in figure 6 the structure diagram of the handover optimization device, which includes：
Statistical module 601, switches to during Target cell for the UE in statistical fractals cell from the serving cell
Caused handoff failure number；
Determining module 602, for determining the handoff failure number based on interference in the handoff failure number；
Whether determination module 603, be more than or equal to for the handoff failure number based on interference described in judging to determine
Four predetermined threshold values；
First acquisition module 604, if being more than or equal to the 4th predetermined threshold value for the handoff failure number based on interference,
At least one received signal power value is then obtained, and determines that maximum receive is believed at least one received signal power value
Number performance number is as adjusted value；
First adjustment module 605, for adjusting the detection threshold value of the serving cell to the adjusted value.
Further, which further includes：
Second acquisition module, is additionally operable in a detection cycle, continuously acquires the signal quilt for characterizing the serving cell
At least one interference value of the intensity of interference；
Generation module, if the number of at least one interference value for obtaining is more than or equal to the 5th predetermined threshold value,
Generate the corresponding interference instruction of the detection cycle；
3rd acquisition module, for continuously acquiring the corresponding at least one interference instruction of N number of detection cycle, wherein, interference
The number of instruction is less than or equal to the number of detection cycle, and N is the positive integer more than or equal to 1；
Second adjustment module, for if it is determined that obtain the interference instruction number be more than or equal to the 6th predetermined threshold value,
The detection threshold value of the serving cell is adjusted to desired value stepwise from the adjusted value.
Wherein, the first acquisition module, the second acquisition module, the 3rd acquisition module can be same modules, and first adjusts mould
Block, second adjustment module can be same modules.
Embodiment six：
A kind of method of handover optimization in corresponding embodiment three, the embodiment of the present invention additionally provide a kind of handover optimization
Device, is illustrated in figure 7 the structure diagram of the handover optimization device, which includes：
First acquisition module 701, for obtaining the examining report of reported by user equipment UE；
Whether parsing module 702, alarm instruction is carried for parsing in the examining report；
Processing module 703, if for carrying alarm instruction in the examining report, it is determined that go out a Target cell, and
The UE for reporting the alarm instruction is switched into the Target cell.
Further, processing module 703 includes：
Acquiring unit, for obtaining at least one received signal power value in the examining report, wherein, a reception
Signal power value corresponds to a Target cell；
Determination unit, for determining maximum receiving signal work(at least one received signal power value of acquisition
Rate value, and determine the corresponding Target cell of the maximum receiving signal performance number；
Processing unit, it is corresponding for the UE for reporting the alarm instruction to be switched to the maximum receiving signal performance number
The Target cell.
Further, which further includes：
Statistical module, for counting caused by the UE in the serving cell switched to during the Target cell
Handoff failure number；
First determining module, for determining the handoff failure number based on interference in the handoff failure number；
Second acquisition module, for when the handoff failure number based on interference is more than or equal to eight predetermined threshold values, obtaining
At least one received signal power value；
Second determining module, for determining that maximum receive is believed at least one received signal power value of acquisition
Number performance number；
Module is adjusted, for adjusting the detection threshold value of the serving cell to the maximum receiving signal performance number.
Wherein, the first determining module, the second determining module can be same modules, and the first acquisition module, second obtain mould
Block can be same module.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
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 also be 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 produces, 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 counted
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 and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs 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 modification and variations.
Claims (13)
- A kind of 1. method of handover optimization, it is characterised in that including：The corresponding at least one interference instruction of M detection cycle is continuously acquired, the interference instruction characterizes the letter of serving cell Number quality, wherein, disturb the number of instruction to be less than or equal to the number of detection cycle, M is the positive integer more than or equal to 1；Count UE in the serving cell from the serving cell switch to Target cell during caused handoff failure Number；The handoff failure number based on interference is determined in the handoff failure number；Whether the number for the interference instruction for judging to obtain is more than or equal to the first predetermined threshold value；If the number of the interference instruction obtained is more than or equal to the first predetermined threshold value, by the detection threshold value of the serving cell Heighten stepwise to desired value；If it is determined that going out the handoff failure number based on interference is more than or equal to the 3rd predetermined threshold value, then at least one reception is obtained Signal power value, and determine maximum receiving signal performance number at least one received signal power value；Judge whether the maximum receiving signal performance number is more than the desired value；If the maximum receiving signal performance number is more than the desired value, by the detection threshold value of the serving cell from the mesh Scale value is adjusted to the maximum receiving signal performance number determined.
- 2. the method as described in claim 1, it is characterised in that corresponding at least one dry continuously acquiring M detection cycle Before disturbing instruction, further include：In a detection cycle, A interference value for characterizing the intensity that the signal of the serving cell is disturbed, A are continuously acquired For the positive integer more than or equal to 1；If the A is more than or equal to the second predetermined threshold value, the corresponding interference instruction of the detection cycle is generated.
- A kind of 3. method of handover optimization, it is characterised in that including：UE in statistical fractals cell from the serving cell switch to Target cell during caused handoff failure number；The handoff failure number based on interference is determined in the handoff failure number；Whether the handoff failure number based on interference for judging to determine is more than or equal to the 4th predetermined threshold value；If the handoff failure number based on interference is more than or equal to the 4th predetermined threshold value, at least one reception signal work(is obtained Rate value, and determine maximum receiving signal performance number as adjusted value at least one received signal power value；The detection threshold value of the serving cell is adjusted to the adjusted value.
- 4. method as claimed in claim 3, it is characterised in that adjusted stepwise by the current detection threshold value of the serving cell Before the adjusted value, further include：In a detection cycle, at least one interference for characterizing the intensity that the signal of the serving cell is disturbed is continuously acquired Value；If the number of at least one interference value obtained is more than or equal to the 5th predetermined threshold value, the detection cycle pair is generated The interference instruction answered；The corresponding at least one interference instruction of N number of detection cycle is continuously acquired, wherein, disturb the number of instruction to be less than or equal to detection The number in cycle, N are the positive integer more than or equal to 1；Adjust to the adjusted value, further include by the detection threshold value of the serving cell：If it is determined that the number of the interference instruction obtained is more than or equal to the 6th predetermined threshold value, by the detection door of the serving cell Limit value is adjusted to desired value stepwise from the adjusted value.
- A kind of 5. method of handover optimization, it is characterised in that including：Obtain the examining report of reported by user equipment UE；Parse and alarm instruction whether is carried in the examining report；If alarm instruction is carried in the examining report, it is determined that go out a Target cell, and the alarm instruction will be reported UE switches to the Target cell；UE in statistical fractals cell switches to caused handoff failure number during the Target cell；The handoff failure number based on interference is determined in the handoff failure number；When the handoff failure number based on interference is more than or equal to eight predetermined threshold values, at least one received signal power is obtained Value；Maximum receiving signal performance number is determined at least one received signal power value of acquisition；The detection threshold value of the serving cell is adjusted to the maximum receiving signal power.
- 6. method as claimed in claim 5, it is characterised in that the alarm instruction is specially that the UE is detecting global cycle Error loop redundancy check code reaches the instruction generated during seven predetermined threshold values in redundancy check code.
- 7. the method as described in any claim in claim 5-6, it is characterised in that determine a Target cell, and will report The UE of the alarm instruction switches to the Target cell, including：At least one received signal power value is obtained in the examining report, wherein, a received signal power value corresponds to one A Target cell；Maximum receiving signal performance number is determined at least one received signal power value of acquisition, and is determined described The corresponding Target cell of maximum receiving signal performance number；The UE for reporting the alarm instruction is switched into the corresponding Target cell of the maximum receiving signal performance number.
- A kind of 8. device of handover optimization, it is characterised in that including：First acquisition module, for continuously acquiring the corresponding at least one interference instruction of M detection cycle, the interference dial gauge The signal quality of serving cell has been levied, wherein, disturb the number of instruction to be less than or equal to the number of detection cycle, M is more than or equal to 1 Positive integer；Statistical module, switches to during Target cell for counting the UE in the serving cell from the serving cell and is produced Raw handoff failure number；Determining module, for determining the handoff failure number based on interference in the handoff failure number；Whether the first determination module, the number of the interference instruction for judging to obtain are more than or equal to the first predetermined threshold value；First adjustment module, if the number of the interference instruction for obtaining is more than or equal to the first predetermined threshold value, by the clothes The detection threshold value of business cell is heightened to desired value stepwise；Processing module, for if it is determined that going out the handoff failure number based on interference is more than or equal to the 3rd predetermined threshold value, then obtaining At least one received signal power value is taken, and maximum receiving signal work(is determined at least one received signal power value Rate value；Second determination module, for judging whether the maximum receiving signal performance number is more than the desired value；If the maximum When received signal power value is more than the desired value, the detection threshold value of the serving cell is adjusted to true from the desired value The maximum receiving signal performance number made.
- 9. device as claimed in claim 8, it is characterised in that described device further includes：Second acquisition module, characterizes what the signal of the serving cell was disturbed in a detection cycle, continuously acquiring A interference value of intensity, A are the positive integer more than or equal to 1；Generation module, if being more than or equal to the second predetermined threshold value for the A, generates the corresponding interference of the detection cycle and refers to Show.
- A kind of 10. device of handover optimization, it is characterised in that including：Statistical module, for the UE in statistical fractals cell from the serving cell switch to Target cell during caused by Handoff failure number；Determining module, for determining the handoff failure number based on interference in the handoff failure number；Whether determination module, be more than or equal to the 4th default threshold for the handoff failure number based on interference described in judging to determine Value；First acquisition module, if being more than or equal to the 4th predetermined threshold value for the handoff failure number based on interference, obtains At least one received signal power value, and determine maximum receiving signal power at least one received signal power value Value is used as adjusted value；First adjustment module, for adjusting the detection threshold value of the serving cell to the adjusted value.
- 11. device as claimed in claim 10, it is characterised in that described device further includes：Second acquisition module, is additionally operable in a detection cycle, continuously acquires and characterizes the signal of the serving cell and be disturbed Intensity at least one interference value；Generation module, if the number of at least one interference value for obtaining is more than or equal to the 5th predetermined threshold value, generates The detection cycle is corresponding to disturb instruction；3rd acquisition module, for continuously acquiring the corresponding at least one interference instruction of N number of detection cycle, wherein, interference instruction Number be less than or equal to the number of detection cycle, N is positive integer more than or equal to 1；Second adjustment module, for if it is determined that the number of the interference instruction obtained is more than or equal to the 6th predetermined threshold value, by institute The detection threshold value for stating serving cell is adjusted to desired value stepwise from the adjusted value.
- A kind of 12. device of handover optimization, it is characterised in that including：First acquisition module, for obtaining the examining report of reported by user equipment UE；Whether parsing module, alarm instruction is carried for parsing in the examining report；Processing module, if for carrying alarm instruction in the examining report, it is determined that go out a Target cell, and institute will be reported The UE for stating alarm instruction switches to the Target cell；Statistical module, caused handoff failure during the Target cell is switched to for the UE in statistical fractals cell Number；First determining module, for determining the handoff failure number based on interference in the handoff failure number；Second acquisition module, for when the handoff failure number based on interference is more than or equal to eight predetermined threshold values, obtaining at least One received signal power value；Second determining module, for determining maximum receiving signal work(at least one received signal power value of acquisition Rate value；Module is adjusted, for adjusting the detection threshold value of the serving cell to the maximum receiving signal performance number.
- 13. device as claimed in claim 12, it is characterised in that the processing module includes：Acquiring unit, for obtaining at least one received signal power value in the examining report, wherein, a reception signal Performance number corresponds to a Target cell；Determination unit, for determining maximum receiving signal power at least one received signal power value of acquisition Value, and determine the corresponding Target cell of the maximum receiving signal performance number；Processing unit, it is corresponding described for the UE for reporting the alarm instruction to be switched to the maximum receiving signal performance number Target cell.
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| CN107370549B (en) * | 2017-07-03 | 2021-09-24 | 京信网络系统股份有限公司 | Interference judgment method and device thereof |
| CN108934030B (en) * | 2018-07-19 | 2021-08-03 | 中信科移动通信技术股份有限公司 | Method for avoiding cross interference of IAB base station |
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| US6041235A (en) * | 1994-04-15 | 2000-03-21 | Nokia Telecommunications Oy | Handover method and arrangement for a mobile communication system |
| CN1520078A (en) * | 2003-01-22 | 2004-08-11 | 华为技术有限公司 | Method for adjusting soft switching threshold |
| CN103889010A (en) * | 2014-03-25 | 2014-06-25 | 京信通信技术(广州)有限公司 | Cell reselection parameter adjustment method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041235A (en) * | 1994-04-15 | 2000-03-21 | Nokia Telecommunications Oy | Handover method and arrangement for a mobile communication system |
| CN1520078A (en) * | 2003-01-22 | 2004-08-11 | 华为技术有限公司 | Method for adjusting soft switching threshold |
| CN103889010A (en) * | 2014-03-25 | 2014-06-25 | 京信通信技术(广州)有限公司 | Cell reselection parameter adjustment method and device |
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