CN102572989A - Method and system capable of adjusting parameters according to moving speed of terminal - Google Patents
Method and system capable of adjusting parameters according to moving speed of terminal Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
- H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data
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Abstract
The invention discloses a method and a system capable of adjusting parameters according to the moving speed of a terminal. The method comprises the steps: a mobile terminal can detect signal strength of a small serving cell and judge the current moving speed according to speed judgment rulers issued by a base station, system parameters are adjusted according to the moving speed, and the system parameters are small cell reselection threshold parameters or switching trigger duration parameters. The method and the system aim at defects of switching parameters based on user experience (UE) speed dynamic adjustment in the 3rd generation partnership project (3GPP) to provide the method based on UE moving speed judgment according to trend of small cell signal quality change in the current serving cell. By means of the method and the system, accuracy and timeliness of the UE speed judgment are improved, switching success rate of networks is improved, and user experience is improved.
Description
Technical field
The present invention relates to the mobile communication technology field; Relate in particular to a kind of method and system of adjusting parameter according to the translational speed at terminal of evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network is called for short E-UTRAN).
Background technology
The continuity of business when moving in wireless network in order to ensure the user, the terminal is switched unavoidable between the sub-district.Subscriber equipment (User Equipment is called for short UE) switches according to rational handover configurations parameter timely, not only can improve the handover success rate index of network, and can promote user's use experience degree; And irrational handover configurations parameter not only can cause not triggering as yet switching just having produced call drop owing to the UE switching time is unreasonable, and can cause similar switching too early, switched late, switch to wrong cell, a series of problems such as the switching of rattling.How to dispose the rational and effective handoff parameter, be the emphasis of the network optimization and the difficult point that network performance promotes always.But because the complexity of network environment; The covering scene that has various complicacies in the network's coverage area, for example the covering in urban district and suburb there are differences, the handoff parameter of high speed scene and low speed scene is different, even under the high speed scene; For example high ferro covers; Also there are the train reasons such as departures that enter the station, cause train to go in different sub-districts with different speed along the railway, so be difficult to confirm that a cover is applicable to the general handover configurations parameter of various wireless scenes.And if, be again a thing that needs the labor manpower and materials by the concrete condition optimization handoff parameter of network optimization personnel to each sub-district.
Proposed to issue mode in 3GPP R9 36.331 agreements at present based on the UE tachometric survey factor through the base station; Indicate the UE of different translational speeds; The base station issued trigger duration (Time to Trigger) parameter in the handover configurations parameter and dynamically adjust; The UE that guarantees different translational speeds can adopt the rational duration parameters that triggers to switch according to the mobility of self.The effect that triggers duration in the handoff parameter be the requirement terminal searching to the signal of adjacent area after, in the triggering duration, the pilot signal strength of adjacent area is always greater than the appointed threshold value, then triggering terminal is to the measurement report of base station reporting neighboring cell.The UE speed decision criteria that 3GPP R9 agreement proposes be whether to reach appointed threshold according to UE switching cell number in the fixed time to judge that UE is in different translational speeds, and then UE is dynamically adjusted the handoff parameter thresholding according to different translational speeds.This cover mechanism that agreement proposes when UE satisfies the decision criteria of corresponding speed, can be improved the handover success rate of UE under corresponding translational speed.For example the speed decision criteria that issues of base station is a S intra second sub-district number at N when above; Judge that UE is at a high speed; When UE at S in second during through N above sub-district, promptly can adjust the handoff parameter that current handoff parameter is configured under the high speed scene and dispose, improve follow-up handover success rate.When but UE moves in preceding 1～N-1 sub-district,, can not adjust handoff parameter dynamically, still have higher handoff failure risk owing to do not satisfy the Rule of judgment that gets into the high speed scene.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method and system of the translational speed adjustment parameter according to the terminal, and UE can't in time adjust the problem that the handoff parameter configuration causes existing higher handoff failure risk when not reaching designated cell as yet and switching number thereby solve.
In order to solve the problems of the technologies described above; The invention provides a kind of method of adjusting parameter according to the translational speed at terminal; Wherein, The speed decision criteria that portable terminal issues according to the base station detects the signal strength signal intensity of Serving cell and judges current movement speed, and according to said translational speed Adjustment System parameter, said system parameters is district reselecting threshold parameter or handover trigger duration parameters.
Further, said method can also have following characteristics:
Said system parameters is the district reselecting thresholding; The portable terminal that is in Idle state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, when carrying out district reselecting, and the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
Further, said method can also have following characteristics:
Said system parameters is a sub-district handover trigger duration; The portable terminal that is in connected state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, and when carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
Further, said method can also have following characteristics:
The difference of the signal strength signal intensity of said Serving cell is meant absolute difference, squared difference value, the mean square deviation of above-mentioned two signal strength signal intensities in the signal strength signal intensity of said Serving cell and the last sense cycle.
Further, said method can also have following characteristics:
Said N-1 Serving cell signal intensity difference satisfies the high speed thresholding and is meant said N-1 Serving cell signal intensity difference all greater than said high speed thresholding, and the mean value of perhaps said N-1 Serving cell signal intensity difference is greater than said high speed thresholding;
Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy the high-speed door limit and be meant that said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding; Perhaps, the mean value of said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding.
In order to solve the problems of the technologies described above, the present invention also provides a kind of system of the translational speed adjustment parameter according to the terminal, comprises base station and terminal, wherein,
Said base station comprises that terminal velocity decision criteria configuration module and terminal velocity decision criteria issue module; Said terminal comprises speed decision criteria receiver module, speed determination module, parameter adjustment module;
Said terminal velocity decision criteria configuration module is used for configurating terminal speed decision criteria;
Said terminal velocity decision criteria issues module, is used for said terminal velocity decision criteria is issued to said portable terminal;
Said speed decision criteria receiver module, be used to receive said terminal velocity decision criteria after, be sent to said speed determination module;
Said speed determination module is used for detecting the signal strength signal intensity of Serving cell and judging current movement speed and be sent to said parameter adjustment module according to said terminal velocity decision criteria;
Said parameter adjustment module is used for according to said translational speed Adjustment System parameter, and said system parameters is district reselecting threshold parameter or handover trigger parameter on opportunity.
Further, said system can also have following characteristics:
Said speed determination module; Also be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Said parameter adjustment module, when also being used under high-speed case, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; When under the middling speed situation, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
Further, said system can also have following characteristics:
Said speed determination module; Also be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Said parameter adjustment module, when also being used under high-speed case, carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; When under the middling speed situation, carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
Further, said system can also have following characteristics:
The difference of the signal strength signal intensity of said Serving cell is meant absolute difference, squared difference value, the mean square deviation of above-mentioned two signal strength signal intensities in the signal strength signal intensity of said Serving cell and the last sense cycle.
Further, said system can also have following characteristics:
Said N-1 Serving cell signal intensity difference satisfies the high speed thresholding and is meant said N-1 Serving cell signal intensity difference all greater than said high speed thresholding, and the mean value of perhaps said N-1 Serving cell signal intensity difference is greater than said high speed thresholding;
Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy the high-speed door limit and be meant that said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding; Perhaps, the mean value of said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding.
Problem to be solved by this invention is exactly in the 3GPP agreement; In UE speed adjustment handoff parameter mechanism; The judgement of UE speed is to rely on the at the appointed time number of cells decision of intra of UE; Cause when not reaching designated cell switching number as yet, UE can't in time adjust the handoff parameter configuration, causes existing the problem of higher handoff failure risk.The present invention is directed in the 3GPP agreement the above-mentioned weak point of dynamically adjusting handoff parameter based on UE speed, proposed in current service cell to carry out the method that the UE translational speed is judged according to the trend of cell signal mass change.Adopt the present invention can improve accuracy and promptness that UE speed is judged, improve the handover success rate of network, promote user's susceptibility.
Description of drawings
Fig. 1 is according to the structural representation of the system of the translational speed at terminal adjustment parameter among the embodiment;
Fig. 2 is the flow chart according to the translational speed at terminal adjustment district reselecting thresholding in the specific embodiment two;
Fig. 3 is the flow chart of translational speed determination methods;
Fig. 4 is according to the flow chart of the translational speed at terminal adjustment sub-district handover trigger duration in the specific embodiment two.
Embodiment
Emphasis of the present invention is UE through receiving the variation of Serving cell signal strength signal intensity, judges current movement speed, so with agreement in combine based on the handoff parameter adjustment mechanism of speed, carry out handoff parameter adjustment based on speed.
Mode of the present invention not only can be applied to can also be applied to other standard network in the EUTRA system.
As shown in Figure 1, the system that adjusts parameter according to the translational speed at terminal comprises base station and terminal.Said base station comprises that terminal velocity decision criteria configuration module (101) and terminal velocity decision criteria issue module (102); Said terminal comprises speed decision criteria receiver module (103), speed determination module (104), parameter adjustment module (105);
Terminal velocity decision criteria configuration module (101) is used for configurating terminal speed decision criteria;
The terminal velocity decision criteria issues module (102), is used for said terminal velocity decision criteria is issued to said portable terminal;
Speed decision criteria receiver module (103), be used to receive said terminal velocity decision criteria after, be sent to said speed determination module (104);
Speed determination module (104) is used for detecting the signal strength signal intensity of Serving cell and judging current movement speed and be sent to said parameter adjustment module (105) according to said terminal velocity decision criteria;
Parameter adjustment module (105) is used for according to said translational speed Adjustment System parameter, and said system parameters is district reselecting threshold parameter or handover trigger duration parameters.
Relate generally to 3 parameters in this programme, sense cycle P, sense cycle number N, signal intensity difference standard S
Offset, judgment criterion is:
With
Difference satisfy S
Offset
Among the embodiment one, the terminal that is in idle condition is according to current translational speed adjustment cell reselection parameters.
Speed determination module (104); Be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Parameter adjustment module (105), when also being used under high-speed case, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; When under the middling speed situation, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
Among the embodiment one, the terminal that is in connection status is according to current translational speed adjustment sub-district handover trigger duration.
Speed determination module (104); Be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Parameter adjustment module (105), when being used under high-speed case, carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; When under the middling speed situation, carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
Wherein, the difference of the signal strength signal intensity of said Serving cell is meant absolute difference, squared difference value, the mean square deviation of above-mentioned two signal strength signal intensities in the signal strength signal intensity of said Serving cell and the last sense cycle.
Wherein, said N-1 Serving cell signal intensity difference satisfies the high speed thresholding and is meant said N-1 Serving cell signal intensity difference all greater than said high speed thresholding, and the mean value of perhaps said N-1 Serving cell signal intensity difference is greater than said high speed thresholding; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy the high-speed door limit and be meant that said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding; Perhaps, the mean value of said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding.
The method that the translational speed according to terminal corresponding with said system adjusted parameter comprises: the speed decision criteria that portable terminal issues according to the base station detects the signal strength signal intensity of Serving cell and judges current movement speed; According to said translational speed Adjustment System parameter, said system parameters is district reselecting threshold parameter or handover trigger duration parameters.
Embodiment one:
Said system parameters is the district reselecting thresholding; The portable terminal that is in Idle state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, when carrying out district reselecting, and the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
Embodiment two:
Said system parameters is a sub-district handover trigger duration; The portable terminal that is in connected state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, and when carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
Through specific embodiment this programme is elaborated below.
Specific embodiment one
As shown in Figure 2, this specific embodiment one is handed down to UE with UE speed decision criteria in the system parameters message of sub-district, and the UE that is in Idle state judges current movement speed after receiving the speed decision criteria that the base station issues, and is used to adjust cell reselection parameters.
Step 1, base station in the system parameters message of sub-district, issue UE speed decision criteria according to system configuration, and this criterion is described in mobile status parameter (the Mobility State Parameters) cell.
Concrete, the base station increases following UE speed critical parameter in mobile status parameter (the Mobility State Parameters) cell of SIB3 (SystemInformationBlockType3), and the parameter title includes but not limited to this:
N-RxEvaluatePeriod, the expression measuring period number;
T-RxEvaluatePeriod, the expression measuring period length;
D-RxOffsetMedium, expression middling speed thresholding;
D-RxoffsetHigh, expression high speed thresholding;
Sf-Medium, expression middling speed coefficient value;
Sf-High, expression high-speed coefficient value.
Step 2 after UE receives the speed decision criteria that the base station issues, according to decision criteria, is judged current movement speed.
A kind of typical judgement flow process is as shown in Figure 3; UE is (being in the timing length of sense cycle timer) in a sense cycle; Judge whether the difference of serving service cell signal in cell signal strength and last one-period in the current period reaches appointed threshold (this thresholding is meant high speed thresholding or middling speed thresholding); If the Serving cell signal difference that N continuous-1 time detects adjacent sense cycle in N sense cycle, judges then that present speed is at a high speed all greater than the high speed thresholding; If the Serving cell signal difference that N continuous-1 time detects adjacent sense cycle in N sense cycle judges then that all less than the high speed thresholding and greater than the middling speed thresholding present speed is a middling speed.
Step 3, UE adjusts the cell reselection parameters thresholding according to the present speed result of determination.
If UE is at a high speed, then UE issues in the base station on the basis of district reselecting thresholding and adds sf-High when carrying out district reselecting; If UE is a middling speed, then UE need issue on the district reselecting thresholding basis in the base station and adds sf-Medium when carrying out district reselecting.
Step 4, UE carries out cell re-selection procedure according to adjusted cell reselection parameters thresholding
Specific embodiment two
As shown in Figure 4, this specific embodiment two is handed down to UE with UE speed decision criteria in the system parameters message of sub-district, and the UE that is in connected state judges current movement speed after receiving the speed decision criteria that the base station issues, and is used to adjust the sub-district handoff parameter.
Step 1, base station in UE measurement configuration message, issue UE speed decision criteria according to system configuration, and this criterion is described in mobile status parameter (the Mobility State Parameters) cell.Mode is identical in concrete mode and the specific embodiment one.
Step 2 after UE receives the speed decision criteria that the base station issues, according to decision criteria, is judged current movement speed, and mode is identical in concrete judgment mode and the specific embodiment one.
Step 3, UE adjusts sub-district handover trigger duration according to the present speed result of determination.
If UE is at a high speed, then UE need multiply by sf-High with the sub-district handover trigger duration that the base station is confirmed when carrying out nearby region measurement; If UE is a middling speed, then UE need multiply by sf-Medium with the sub-district handover trigger duration that the base station is confirmed when carrying out nearby region measurement.
Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. method according to the translational speed at terminal adjustment parameter, wherein,
The speed decision criteria that portable terminal issues according to the base station detects the signal strength signal intensity of Serving cell and judges current movement speed, and according to said translational speed Adjustment System parameter, said system parameters is district reselecting threshold parameter or handover trigger duration parameters.
2. the method for claim 1 is characterized in that,
Said system parameters is the district reselecting thresholding; The portable terminal that is in Idle state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, when carrying out district reselecting, and the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
3. the method for claim 1 is characterized in that,
Said system parameters is a sub-district handover trigger duration; The portable terminal that is in connected state measures the signal strength signal intensity of Serving cell in N measuring period in N measuring period; And calculate the N-1 Serving cell signal intensity difference of adjacent measuring period; Said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time; Said portable terminal judges that translational speed is at a high speed, and when carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time; Said portable terminal judges that translational speed is a middling speed; When carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
4. like claim 1,2 or 3 described methods, it is characterized in that,
The difference of the signal strength signal intensity of said Serving cell is meant absolute difference, squared difference value, the mean square deviation of above-mentioned two signal strength signal intensities in the signal strength signal intensity of said Serving cell and the last sense cycle.
5. like claim 1,2 or 3 described methods, it is characterized in that,
Said N-1 Serving cell signal intensity difference satisfies the high speed thresholding and is meant said N-1 Serving cell signal intensity difference all greater than said high speed thresholding, and the mean value of perhaps said N-1 Serving cell signal intensity difference is greater than said high speed thresholding;
Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy the high-speed door limit and be meant that said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding; Perhaps, the mean value of said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding.
6. the system according to the translational speed adjustment parameter at terminal comprises base station and terminal, wherein,
Said base station comprises that terminal velocity decision criteria configuration module and terminal velocity decision criteria issue module; Said terminal comprises speed decision criteria receiver module, speed determination module, parameter adjustment module;
Said terminal velocity decision criteria configuration module is used for configurating terminal speed decision criteria;
Said terminal velocity decision criteria issues module, is used for said terminal velocity decision criteria is issued to said portable terminal;
Said speed decision criteria receiver module, be used to receive said terminal velocity decision criteria after, be sent to said speed determination module;
Said speed determination module is used for detecting the signal strength signal intensity of Serving cell and judging current movement speed and be sent to said parameter adjustment module according to said terminal velocity decision criteria;
Said parameter adjustment module is used for according to said translational speed Adjustment System parameter, and said system parameters is district reselecting threshold parameter or handover trigger parameter on opportunity.
7. system as claimed in claim 6 is characterized in that,
Said speed determination module; Also be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Said parameter adjustment module, when also being used under high-speed case, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the high-speed coefficient value on definite district reselecting thresholding basis, base station; When under the middling speed situation, carrying out district reselecting, the district reselecting thresholding after conduct is upgraded after increasing the middling speed coefficient value on definite district reselecting thresholding basis, base station.
8. system as claimed in claim 6 is characterized in that,
Said speed determination module; Also be used in N measuring period, measuring the signal strength signal intensity of Serving cell in N measuring period; And calculating the N-1 Serving cell signal intensity difference of individual adjacent measuring period, said N-1 Serving cell signal intensity difference satisfies high-speed door in limited time, judges that translational speed is at a high speed; Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy high-speed door in limited time, and the judgement translational speed is a middling speed;
Said parameter adjustment module, when also being used under high-speed case, carrying out nearby region measurement, sub-district, back handover trigger duration is upgraded in conduct after multiply by the high-speed coefficient value on definite handover trigger duration basis, sub-district, base station; When under the middling speed situation, carrying out nearby region measurement, the sub-district handover trigger duration after conduct is upgraded after multiply by the middling speed coefficient value on definite handover trigger duration basis, sub-district, base station.
9. like claim 6,7 or 8 described methods, it is characterized in that,
The difference of the signal strength signal intensity of said Serving cell is meant absolute difference, squared difference value, the mean square deviation of above-mentioned two signal strength signal intensities in the signal strength signal intensity of said Serving cell and the last sense cycle.
10. like claim 7 or 8 described methods, it is characterized in that,
Said N-1 Serving cell signal intensity difference satisfies the high speed thresholding and is meant said N-1 Serving cell signal intensity difference all greater than said high speed thresholding, and the mean value of perhaps said N-1 Serving cell signal intensity difference is greater than said high speed thresholding;
Said N-1 Serving cell signal intensity difference satisfies the middling speed thresholding and do not satisfy the high-speed door limit and be meant that said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding; Perhaps, the mean value of said N-1 Serving cell signal intensity difference is all less than said high speed thresholding and greater than said middling speed thresholding.
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| CN2012100108801A CN102572989A (en) | 2012-01-13 | 2012-01-13 | Method and system capable of adjusting parameters according to moving speed of terminal |
| PCT/CN2012/077763 WO2013104176A1 (en) | 2012-01-13 | 2012-06-28 | Method and system capable of adjusting parameter according to moving speed of terminal |
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