CN101925148B - Method for estimating speed class of mobile terminal in multilevel cellular system - Google Patents
Method for estimating speed class of mobile terminal in multilevel cellular system Download PDFInfo
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- CN101925148B CN101925148B CN 200910052922 CN200910052922A CN101925148B CN 101925148 B CN101925148 B CN 101925148B CN 200910052922 CN200910052922 CN 200910052922 CN 200910052922 A CN200910052922 A CN 200910052922A CN 101925148 B CN101925148 B CN 101925148B
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Abstract
The invention discloses a method for estimating a speed class of a mobile terminal in a multilevel cellular system, which comprises the following steps of: allowing the multilevel cellular system to comprise multiple cell types, and when the mobile terminal enters a cell, acquiring a cell weight; when the terminal performs cell reselection, and in the set time interval, accumulating the cell weight of the original cell to Ntotal; and when the time interval is up, comparing the Ntotal, a NCR-M and a NCR-H; if the numerical value of the Ntotal is lower than that of the NCR-M, judging the speed of the mobile terminal to be a low speed; if the Ntotal is between the NCR-M and the NCR-H, judging the speed of the mobile terminal to be an intermediate speed; and if the numerical value of the Ntotal is greater than that of the NCR-H, judging the speed of the mobile terminal to be a high speed. When a new interval begins, the Ntotal is cleared. The method is also applied to cell weight accumulation only when the terminal switches and the cell weight accumulation when the terminal switches or the cell is reselected instead of the weight accumulation only when the terminal performs the cell reselection. The cell weight is only added by utilizing the existing information in the system, so that the precision of the conventional method for estimating the speed of the terminal in the system is improved.
Description
Technical field
The invention belongs to the mobile communication technology field, relate to a kind of method for estimating speed class of portable terminal, relate in particular to the method for estimating speed class of portable terminal in a kind of multilevel cellular system.
Background technology
In existing cellular communication system, particularly for the research scene of mobile robustness self-optimizing [referring to 3GPP TR 36.902 v1.1.0,2009.04] in, for portable terminal switch or cell reselection process before speed class detecting, seem particularly important.The portable terminal of excessively high speed need to switch or cell reselection process ahead of time accordingly, and the portable terminal of low speed has the more time to rest in the former residential quarter relatively.As seen, the embodiment of mobile robustness is to switch or the parameter setting of cell reselection should adapt with the speed class of terminal.
In the definition and standard of 3GPP to LTE (Long Term Evolution) technology, 3GPP LTE TR36.331[is referring to 3GPP TS 36.331 v8.5.0,2009.03] and TR 36.304[referring to 3GPP TS 36.304v8.5.0,2009.03] document introduced the method to set up that switching or cell reselection parameters and speed of mobile terminal grade adapt.Wherein crucial problem is the good estimation to the speed of mobile terminal grade.Three kinds of speed class have been defined among the LTE: low speed, middling speed and high speed.When portable terminal is in holding state (Idle), at certain time intervals (T
CRmax) interior times N of adding up terminal generation cell reselection event: if the numerical value of N is lower than the threshold value N of the cell reselection event frequency that enters the middling speed grade
CR-M, then be judged to low speed; If be in N
CR-MThreshold value N with the cell reselection event frequency that enters the high speed grade
CR-HBetween, then be judged to middling speed; If be higher than N
CR-HThen be at a high speed.Correspondingly, be in state of activation (Active), at certain time intervals (T when portable terminal
HOmax) in statistics be the number of times that handover event occurs, judge that the method for speed class is similar to the above.Obviously, during at linear state, relative accuracy can be higher at running of mobile terminal for such speed class determine mechanism, and when terminal frequently changed direction and speed, accuracy but can not guarantee.But, for the portable terminal of high speed or middling speed, the possibility that frequently changes direction and speed is very low, so LTE adopts this simple method for estimating speed class also to should be all right.Divide after the speed of mobile terminal grade, can be according to speed convergent-divergent criterion (Speed Dependent Scaling Rules) [referring to 3GPP TS 36.304 v8.5.0,2009.03] the corresponding mobility parameters of cell reselection and switching is adjusted accordingly, increase or reduce corresponding amount, to improve the mobility gain and to guarantee the mobile robustness gain.
In addition, accurately estimate the maximum doppler frequency of portable terminal according to signal rapid fading characteristic, thereby estimate the precise speed of terminal, it is the classical way that terminal velocity is accurately estimated, at Chinese CN02810944.9, " a kind of Doppler frequency offset estimation method of Fast Convergent in the mobile communication " (Hua Jingyu, sliding writing brush, Sheng Bin etc., the communication journal, 2005,26 (1): detailed introduction 136-141) etc. is arranged.But when considering the complexity that realizes its algorithm and actual mobile the switching to the required precision of velocity estimation, these precise Estimation Method in real system not by standardization.
For complicated and novel network environment, much different and cell type macrocell (Macro eNB) is widely used in the mobile radio system, for example Microcell (Pico eNB), various forms of relaying (Relay), and home cell (Home eNB) etc.Because the difference of coverage, for the portable terminal under the uniform velocity, switch or the cycle of cell reselection event inconsistent, thereby so that the end product of the speed class of the estimation portable terminal among the LTE produces deviation.Network environment is more complicated, passes through cell type more various, and the result error of generation will be larger.
On the other hand, when differentiating the speed of mobile terminal grade among the LTE, the process of switching and cell reselection is relatively independent.Within the time interval of setting, when the high speed mobile terminal that occurs repeatedly to switch enters holding state, because its event that only switches before this, the cell reselection event does not occur, ignore handover event during statistics, can judge by accident, affected the validity of cell reselection; Otherwise, as the same.
Summary of the invention
Technical problem to be solved by this invention is: the method for estimating speed class of portable terminal in a kind of multilevel cellular system is provided, can significantly improves the accuracy of terminal velocity hierarchical estimation.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The method for estimating speed class of portable terminal is characterized in that in a kind of multilevel cellular system, and the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal generation cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
TotalThe weight of each residential quarter is directly proportional with its coverage;
Constant duration expires, relatively N
Total, terminal enters the threshold value N of middling speed grade gravity treatment frequency
CR-M, terminal enters the threshold value N of the gravity treatment frequency of high speed grade
CR-HIf: N
TotalNumerical value be lower than N
CR-M, then the speed class of portable terminal is judged to low speed; If N
TotalBe in N
CR-MAnd N
CR-HBetween, then sentence it as middling speed; If N
TotalBe higher than N
CR-H, then sentence it as at a high speed.When new interval begins, N
TotalZero clearing.
As a preferred embodiment of the present invention, the cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps, the cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps, the cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
As a preferred embodiment of the present invention, described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular; Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
As a preferred embodiment of the present invention, described method also comprises: when terminal entered Serving cell, Serving cell was informed terminal with cell type.
The method for estimating speed class of portable terminal in a kind of multilevel cellular system, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total';
Constant duration expires, relatively N
Total', terminal enters the threshold value N that the middling speed grade is switched frequency
HO-M, terminal enters the threshold value N of the switching frequency of high speed grade
HO-HIf N
Total' numerical value be lower than N
HO-M, then the speed class of portable terminal is judged to low speed; If N
Total' be in N
HO-MAnd N
HO-HBetween, then sentence it as middling speed; If N
Total' be higher than N
HO-H, then sentence it as at a high speed.When new interval begins, N
Total' zero clearing.
As a preferred embodiment of the present invention, the cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps, the cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps, the cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
As a preferred embodiment of the present invention, described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular; Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
The method for estimating speed class of portable terminal in a kind of multilevel cellular system, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches or during the cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total";
Constant duration expires, relatively N
Total", terminal enters that the middling speed grade is switched and the threshold value N of gravity treatment frequency
CR﹠amp; HO-M, terminal enters the switching of high speed grade and the threshold value N of gravity treatment frequency
CR﹠amp; HO-HIf N
Total" numerical value be lower than N
CR﹠amp; HO-M, then the speed class of portable terminal is judged to low speed; If N
Total" be in N
CR﹠amp; HO-MAnd N
CR﹠amp; HO-HBetween, then sentence it as middling speed; If N
Total" be higher than N
CR﹠amp; HO-H, then sentence it as at a high speed.When new interval begins, N
Total" zero clearing.
As a preferred embodiment of the present invention, the cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps, the cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps, the cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
As a preferred embodiment of the present invention, described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular; Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
Beneficial effect of the present invention is: the present invention utilizes existing information in the LTE system, adds cell weight, so that the accuracy of original terminal velocity method of estimation is improved in the system.And the present invention equally also is applicable to other similar cellular communication systems.To the configuration that the good estimation of speed of mobile terminal grade can adapt to mobility parameters in the switching in the cellular network and the cell reselection process, increase that network switches and the efficient of cell reselection, avoid the generation of typical mobile robustness problem.
Former residential quarter adds cell type in Broadcast Control Channel, inform the portable terminal that enters by broadcast mode.Increase like this, hardly the portable terminal expense.And the accuracy lifting to the speed of mobile terminal grade discrimination that the increase cell weight is brought is apparent.And, the merging statistics of handover event and cell reselection event, terminals consume when not only having avoided two kinds of indie incident statistics, and prevent the erroneous judgement that the event statistics when the unexpected transition status of mobile terminal state is omitted the speed class that causes, further improve the accuracy of speed class judgement.
Description of drawings
Fig. 1 is flow chart of the present invention.
Fig. 2 is the structural representation of multi-level cellular communication system among the embodiment five.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The invention belongs to moving communicating field, be particularly useful in the network environment of multi-level honeycomb.So-called multi-level cellular network refers to comprise home cell, Microcell, focus coverage cell, the cellular network environment that the various cellular cells such as macrocell coexist in a certain zone.Particularly, the present invention can be widely used in various wireless communication systems, such as systems such as UMTS, LTE, LTE-A, Mobile WiMAX and Mobile WiMAX II.
The invention provides a kind of method for estimating speed class for the multilevel cellular system portable terminal, be included in the network environment of multi-level honeycomb, according to switching or the former cell type of cell reselection, add cell weight when in certain intervals, adding up switching or cell reselection event times, thereby the speed class of assessment portable terminal, be used for the moving parameter self-optimizing to next time switching or cell reselection, guarantee its mobile robustness.Its cell type of portable terminal can be informed by Broadcast Control Channel (as adding in the message such as MIB, SI) in former residential quarter.Owing under the equal velocity conditions of portable terminal, adding up the number of times of switching or cell reselection event and on average passing through former residential quarter apart from being inversely proportional to.The cell weight of the selected macrocell of the present invention is fiducial value, and the cell weight of other types is to determine according to the average distance ratio that portable terminal passes through this residential quarter and macrocell.Because switching and cell reselection all characterize terminal and move, the number of times that switches with the cell reselection event can be merged statistics, be integrated into one and overlap unified speed class differentiation and the adjustment scheme of relevant mobility parameters.This scheme can relatively accurately be estimated the speed class of portable terminal, and the mobility parameters of adjusting accordingly can improve the gain of some typical mobile robustness self-optimizing scenes (" after switching late ", " switching too early ", " being not suitable for the residential quarter switches " etc.) well.
The present invention is exactly in essence in multi-level cellular network environment, on the basis of existing estimation speed of mobile terminal rank method, characteristic in conjunction with multi-level honeycomb, when statistics switching and cell reselection event times, the cell weight that adds the former residential quarter of generation event, eliminate the inconsistent impact that speed class is estimated of cell type, improve the accuracy of differentiating the terminal velocity grade.And, with relatively independent but all characterize handover event and the cell reselection event of fast mobile terminal, merge and consider, prevent " low speed " or " middling speed " erroneous judgement.Compare the existing method among the LTE, more complicated at cell type, in the faster network environment of speed of mobile terminal, the gain that the present invention brings is just larger.
In multi-level cellular network environment, cell type is different, the size of coverage will be inconsistent, and this inconsistent causing can draw inconsistent speed class with the portable terminal of uniform velocity in existing prescriptive procedure, so it is particularly necessary to increase the cell weight that switches with the cell reselection event.
At first, portable terminal need to be known former cell type, and this can be when terminal enters former residential quarter, and terminal is informed by Broadcast Control Channel (such as adding MIB, SI, in the message such as Master Information Block, SystemInformation) in the residential quarter.
Secondly, the acquisition of cell weight of the present invention is relevant with the coverage of residential quarter, and the average distance that namely passes through former residential quarter with terminal is weighed.As seen, the cycle of passing through that portable terminal passes through cell coverage area is inversely proportional to average distance, namely switches and the cell weight of cell reselection event times can be defined as the function linear with the average traverse distance in this residential quarter.For instance, residential quarter first and second switch and the ratio of the cell weight of cell reselection event times is the ratio of the average traverse distance of residential quarter first and second.Do not lose fairness, the cell weight that the present invention chooses macrocell is fiducial value.
At last, cell reselection is the event of the selection better services residential quarter that produces under holding state of portable terminal, the event of the selection better services residential quarter that under the state that portable terminal is activated, produces and switch, both have characterized the mobility of portable terminal to a certain extent, can provide foundation for differentiating the terminal velocity grade.The above-mentioned method of mentioning the two indie incident statistics can with serving unnecessary erroneous judgement, affect the efficient of cell reselection and switching.The present invention when terminal generation cell reselection or when switching, adds after the cell weight cumulatively in a certain time interval one by one, effectively prevents the erroneous judgement to the speed of mobile terminal grade, so that system in time adjusts mobility parameters, adapts with the speed of portable terminal.
Former residential quarter adds cell type in Broadcast Control Channel, inform the portable terminal that enters by broadcast mode.Increase like this, hardly the portable terminal expense.And the accuracy lifting to the speed of mobile terminal grade discrimination that the increase cell weight is brought is apparent.And, the merging statistics of handover event and cell reselection event, terminals consume when not only having avoided two kinds of indie incident statistics, and prevent in statistics time interval, the erroneous judgement that event statistics when mobile terminal state is changed is suddenly omitted the speed class that causes further improves the accuracy of speed class judgement.The simple flow chart of the present invention as shown in Figure 1.
Embodiment two
In the present embodiment, the method for estimating speed class of portable terminal can use in the residential quarter of any type.The present embodiment is cell weight accumulation when terminal generation cell reselection event.
The method for estimating speed class of portable terminal in the multilevel cellular system of the present embodiment, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal generation cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
TotalThe weight of each residential quarter is directly proportional with its coverage.When new interval begins, N
TotalBe zero.After this, every through a gravity treatment, N
TotalAdd the weight of this residential quarter.
Constant duration expires, relatively N
Total, terminal enters the threshold value N of middling speed grade gravity treatment frequency
CR-M, terminal enters the threshold value N of the gravity treatment frequency of high speed grade
CR-HIf: N
TotalNumerical value be lower than N
CR-M, then the speed class of portable terminal is judged to low speed; If N
TotalBe in N
CR-MAnd N
CR-HBetween, then sentence it as middling speed; If N
TotalBe higher than N
CR-H, then sentence it as at a high speed.When new interval begins, N
TotalZero clearing.
Embodiment three
In the present embodiment, the method for estimating speed class of portable terminal can use in the residential quarter of any type.Cell weight accumulation when the present embodiment switches event in terminal.
The method for estimating speed class of portable terminal in the multilevel cellular system of the present embodiment, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total'.When new interval begins, N
Total' be zero.After this, every through once switching N
Total' add the weight of this residential quarter.
Constant duration expires, relatively N
Total', terminal enters the threshold value N that the middling speed grade is switched frequency
HO-M, terminal enters the threshold value N of the switching frequency of high speed grade
HO-HIf N
Total' numerical value be lower than N
HO-M, then the speed class of portable terminal is judged to low speed; If N
Total' be in N
HO-MAnd N
HO-HBetween, then sentence it as middling speed; If N
Total' be higher than N
HO-H, then sentence it as at a high speed.When new interval begins, N
Total' zero clearing.
Embodiment four
In the present embodiment, the method for estimating speed class of portable terminal can use in the residential quarter of any type.The present embodiment terminal switches or cell weight accumulation all during cell reselection.
The method for estimating speed class of portable terminal comprises the steps: in the multilevel cellular system of the present embodiment
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches or during the cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total".When new interval begins, N
Total" be zero.After this, every through once switching or gravity treatment N
Total" add the weight of this residential quarter.
Constant duration expires, relatively N
Total", terminal enters that the middling speed grade is switched and the threshold value N of gravity treatment frequency
CR﹠amp; HO-M, terminal enters the switching of high speed grade and the threshold value N of gravity treatment frequency
CR﹠amp; HO-HIf N
Total" numerical value be lower than N
CR﹠amp; HO-M, then the speed class of portable terminal is judged to low speed; If N
Total" be in N
CR﹠amp; HO-MAnd N
CR﹠amp; HO-HBetween, then sentence it as middling speed; If N
Total" be higher than N
CR﹠amp; HO-H, then sentence it as at a high speed.When new interval begins, N
Total" zero clearing.
Embodiment five
The present invention includes interpolation switching and the cell weight of cell reselection event times, definition and the storage of weight parameter, and the adjustment that comprises weight parameter relevant parameter when interior differentiation speed of mobile terminal grade.Describe the present embodiment in detail below in conjunction with Fig. 2.
Fig. 2 is the schematic construction block diagram for the multi-level cellular communication system of realizing the embodiment of the invention.This wireless communication system comprises macrocell, Microcell, home cell, mobile management entity/gateway.The embodiment of the invention is not limited to legend network and structure.
In the multi-level cellular network as shown in Figure 2, triformed residential quarter is respectively macrocell, Microcell and home cell.The residential quarter needs to consider the speed class of portable terminal when the mobility parameters such as portable terminal cell reselection and switching is set.In 3GPP LTE TR36.331 document, the speed class of portable terminal is defined as three kinds: low speed, middling speed and high speed.Have the adjustment mode of a kind of corresponding cell reselection and handoff parameter for every kind of speed class, thereby reach mobility gain maximization, guarantee the fast mobile terminal robustness.
For the relatively accurate terminal velocity grade of describing, eliminate former cell type to differentiating result's error, when adding up switching and cell reselection event in a certain time interval, need to according to the type difference of former residential quarter, add cell weight.The acquisition of end side cell type is that the residential quarter is passed through Broadcast Control Channel (as adding in the message such as MIB, SI) and informed.For example, when in former residential quarter being macrocell, Microcell and home cell, cell weight can be defined as P
Macro, P
PicoAnd P
Home
The acquisition of cell weight of the present invention is relevant with the coverage of residential quarter, and the distance of namely on average passing through former residential quarter with terminal is weighed.As seen, the cycle of passing through that portable terminal passes through cell coverage area is inversely proportional to average distance, namely switches and the cell weight of cell reselection event times can be defined as the function linear with the average traverse distance in this residential quarter.For instance, residential quarter first and second switch and the ratio of the cell weight of cell reselection event times is the ratio of the average traverse distance of residential quarter first and second.Do not lose fairness, the cell weight that the present invention chooses macrocell is fiducial value.
In conjunction with the network entity among Fig. 2, the average traverse distance of macrocell, Microcell and home cell is respectively d
Macro, d
Pico, d
Home, be without loss of generality, might as well establish P
Macro=1, then
P
pico＝P
macro*d
pico/d
macro＝d
pico/d
macro (1)
P
home＝P
macro*d
home/d
macro＝d
home/d
macro (2)
Because terminal is switched and cell reselection all characterizes mobility, so when differentiating the terminal velocity grade, do not distinguish and switch statistics period and cell reselection statistical interval, both are merged statistics.Corresponding critical parameter such as T
CRmax, N
CR-M, N
CR-H, T
HOmax, N
HO-M, N
HO-HBe modified to T
CR﹠amp; HOmax, N
CR﹠amp; HO-M, N
CR﹠amp; HO-HThe present embodiment, the number of times sum of statistics switching and cell reselection.
Wherein:
T
CRmax: the time interval of statistics cell reselection event during the estimating velocity grade;
N
CR-M: terminal enters the threshold value of the cell reselection event frequency of middling speed grade;
N
CR-H: terminal enters the threshold value of the cell reselection event frequency of high speed grade;
T
HOmax: the time interval of statistics handover event during the estimating velocity grade;
N
HO-M: terminal enters the threshold value of the handover event frequency of middling speed grade;
N
HO-H: terminal enters the threshold value of the handover event frequency of high speed grade;
T
CR﹠amp; HOmax: the time interval of statistics switching and cell reselection event after revising;
N
CR﹠amp; HO-M: terminal enters the switching of middling speed grade and the threshold value of cell reselection frequency after revising;
N
CR﹠amp; HO-H: terminal enters the switching of high speed grade and the threshold value of cell reselection frequency after revising;
At T
CR﹠amp; HOmaxIn time, if switching and cell reselection number of times sum that statistics obtains occuring when former residential quarter is macrocell, Microcell and home cell are respectively N
Macro, N
Pico, N
Micro, then
N
total＝P
macro*N
macro+P
pico*N
pico+P
home*N
home (3)
Then relatively weighted accumulation switches and cell reselection event times sum N
TotalWith N
CR﹠amp; HO-M, N
CR﹠amp; HO-HSize.Similar among method of discrimination and the 3GPP LTE TR36.304, N even
TotalNumerical value be lower than N
CR﹠amp; HO-M, then be judged to low speed; If be in N
CR﹠amp; HO-MAnd N
CR﹠amp; HO-HBetween, then be judged to middling speed; If be higher than N
CR﹠amp; HO-H, then be at a high speed.According to the relatively accurate velocity estimation of portable terminal, can improve the mobility gain, guarantee to greatest extent the mobile robustness of portable terminal.Various cell weight parameters are safeguarded in residential quarter and core-network side.
Embodiment six
In the present embodiment, the method for estimating speed class method of portable terminal comprises the steps: in the multilevel cellular system
1, when terminal entered, Serving cell was informed terminal (as adding in the message such as MIB, SI, informing by Broadcast Control Channel) with cell type.
2, statistics is switched and during the cell reselection number of times in a certain time interval, needs to consider to switch and the type of the former residential quarter of cell reselection, increases cell weight, eliminates cell type inconsistent on differentiating the impact of speed of mobile terminal grade, the raising accuracy.
3, when weighing cell weight, select portable terminal to pass through the average distance of former residential quarter as foundation.
4, the cell weight value is directly proportional with the average traverse distance in residential quarter, and the cell weight of selecting certain residential quarter is fiducial value, and the cell weight value of other cell types is this residential quarter and the ratio of the average traverse distance of benchmark residential quarter.
5, during statistical phenomeon, will switch and cell reselection event merge statistics at certain time intervals, original relatively independent utilization switching and the differentiation process conformity of cell reselection number of times will be become a unified process, revise the correlation discriminating parameter, avoid the erroneous judgement of some speed class.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that in the situation that do not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.In the situation that do not break away from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (10)
1. the method for estimating speed class of portable terminal in the multilevel cellular system is characterized in that, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal generation cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total, N
TotalIn the same time interval, the former residential quarter cell weight of portable terminal generation cell reselection event cumulative and; The weight of each residential quarter is directly proportional with its coverage;
Constant duration expires, relatively N
Total, terminal enters the threshold value N of middling speed grade gravity treatment frequency
CR-M, terminal enters the threshold value N of the gravity treatment frequency of high speed grade
CR-HIf: N
TotalNumerical value be lower than N
CR-M, then the speed class of portable terminal is judged to low speed; If N
TotalBe in N
CR-MAnd N
CR-HBetween, then sentence it as middling speed; If N
TotalBe higher than N
CR-H, then sentence it as at a high speed; When new interval begins, N
TotalZero clearing.
2. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 1 is characterized in that:
The cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps
The cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps
The cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
3. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 1 is characterized in that:
Described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular;
Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
4. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 1 is characterized in that:
Described method also comprises: when terminal entered Serving cell, Serving cell was informed terminal with cell type.
5. the method for estimating speed class of portable terminal in the multilevel cellular system is characterized in that, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total', N
Total' be in the same time interval, portable terminal switch event former residential quarter cell weight cumulative and;
Constant duration expires, relatively N
Total', terminal enters the threshold value N that the middling speed grade is switched frequency
HO-M, terminal enters the threshold value N of the switching frequency of high speed grade
HO-HIf N
Total' numerical value be lower than N
HO-M, then the speed class of portable terminal is judged to low speed; If N
Total' be in N
HO-MAnd N
HO-HBetween, then sentence it as middling speed; If N
Total' be higher than N
HO-H, then sentence it as at a high speed; When new interval begins, N
Total' zero clearing.
6. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 5 is characterized in that:
The cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps
The cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps
The cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
7. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 5 is characterized in that:
Described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular;
Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
8. the method for estimating speed class of portable terminal in the multilevel cellular system is characterized in that, the method comprises the steps:
Described multilevel cellular system comprises multiple cell type, and portable terminal obtains cell weight when entering the residential quarter; When terminal switches or during the cell reselection event, and within the time interval of setting, the cell weight of cumulative former residential quarter is to N
Total", N
Total" be in the same time interval, portable terminal switch or the former residential quarter cell weight of cell reselection event cumulative and;
Constant duration expires, relatively N
Total", terminal enters that the middling speed grade is switched and the threshold value N of gravity treatment frequency
CR﹠amp; HO-M, terminal enters the switching of high speed grade and the threshold value N of gravity treatment frequency
CR﹠amp; HO-HIf N
Total" numerical value be lower than N
CR﹠amp; HO-M, then the speed class of portable terminal is judged to low speed; If N
Total" be in N
CR﹠amp; HO-MAnd N
CR﹠amp; HO-HBetween, then sentence it as middling speed; If N
Total" be higher than N
CR﹠amp; HO-H, then sentence it as at a high speed; When new interval begins, N
Total" zero clearing.
9. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 8 is characterized in that:
The cell weight of described each residential quarter is corresponding one by one with cell type; Perhaps
The cell weight of described each residential quarter is directly proportional with the average distance that portable terminal passes through the residential quarter; Perhaps the cell weight of described each residential quarter was directly proportional with the time of mobile terminal to reside cell.
10. the method for estimating speed class of portable terminal in the multilevel cellular system according to claim 8 is characterized in that:
Described residential quarter comprises one or more in large-scale, medium-sized, small-sized and the microcellular;
Take the weight of one of them residential quarter m as set point, the weight of other residential quarters is determined according to the ratio of itself and residential quarter m coverage.
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| CN102572989A (en) * | 2012-01-13 | 2012-07-11 | 中兴通讯股份有限公司 | Method and system capable of adjusting parameters according to moving speed of terminal |
| US20140357273A1 (en) * | 2012-01-20 | 2014-12-04 | Nokia Solutions And Networks Oy | Mobility control in a communication system |
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| EP2849488A1 (en) * | 2012-05-10 | 2015-03-18 | Fujitsu Limited | Mobile setting negotiation method and device |
| CN103391590B (en) * | 2012-05-11 | 2016-06-22 | 普天信息技术研究院有限公司 | The adjustment method of cell reselection parameter of heterogeneous network |
| CN102769563B (en) * | 2012-07-03 | 2017-11-03 | 中兴通讯股份有限公司 | Route computing method and device |
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| WO2014047795A1 (en) * | 2012-09-26 | 2014-04-03 | 华为技术有限公司 | Method and device for estimating moving status and measurement report method and device |
| CN103826248A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN105828371B (en) * | 2015-01-04 | 2019-03-26 | 中国移动通信集团公司 | The measurement method and device of LTE terminal under Idle state |
| CN106413016B (en) * | 2015-07-31 | 2019-10-25 | 展讯通信（上海）有限公司 | A kind of cell selection processing method and intelligent terminal |
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