CN103379618A - Method, object base station and system for estimating terminal speed - Google Patents

Method, object base station and system for estimating terminal speed Download PDF

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CN103379618A
CN103379618A CN2012101102709A CN201210110270A CN103379618A CN 103379618 A CN103379618 A CN 103379618A CN 2012101102709 A CN2012101102709 A CN 2012101102709A CN 201210110270 A CN201210110270 A CN 201210110270A CN 103379618 A CN103379618 A CN 103379618A
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terminal
speed
residential quarter
history information
target
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CN103379618B (en
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苑秋红
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ZTE Corp
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ZTE Corp
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Abstract

The invention provides a method, an object base station and a system for estimating terminal speed, and relates to the field of communication systems. The method for estimating terminal speed includes that terminal history information of a terminal is obtained by the object based station from a source base station; and a speed state of the terminal is estimated by the object base station according to the terminal history information. The object base station includes an acquisition unit, which is used for acquiring terminal history information of the terminal from the source base station; and an estimation unit, which is used for estimating the speed state of the terminal according to the terminal history information. The method, the object base station and the system for estimating terminal speed have a simple processing process.

Description

Estimate method, target BS and the system of terminal velocity
Technical field
The present invention relates to communication system, refer to especially a kind of method, target BS and system that estimates terminal velocity.
Background technology
With LTE (Long Term Evolution, Long Term Evolution) system is example, the configuration of the design of mobility algorithm and relevant parameter in the LTE system, to cover for the continuity that guarantees network, UE (terminal) is when carrying out the residential quarter switching, must guarantee the not interrupt of conversing as far as possible, conserve network resources also guarantees user's susceptibility.
Present stage is along with a large amount of high-speed railways, highway builds, land means of conveyance more and more flourishing, and the UE in the same area may be in different translational speed states.And for the UE that is in the connected state high-speed mobile, cause the frequent interruption of ongoing business and can waste a large amount of signal resources thereby may frequently switch on the one hand, relevant measurement and switch decision strategy is no longer applicable for High-speed Circumstance on the other hand.Therefore, the LTE system need to estimate the speed of UE, thereby takes corresponding strategy according to the speed state of UE.
In the prior art, measure the speed that obtains terminal, this method more complicated by physical layer.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of estimation, target BS and system of speed of terminal, and processing method is fairly simple.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of method of estimating terminal velocity, comprising:
Target BS obtains the terminal history information of terminal from source base station;
Described target BS is estimated the speed state of described terminal according to described terminal history information.
Described target BS estimates that according to described terminal history information the step of the speed state of described terminal comprises:
Described target BS obtains the time of staying of at least one residential quarter in all residential quarters in the described terminal history information; And the time of staying of described at least one residential quarter carried out addition, generate the first numerical value;
Described target BS obtains the time threshold of at least one speed type corresponding to described at least one residential quarter; And the time threshold of the same speed type of described at least one residential quarter carried out respectively addition, generate at least one second value;
Size between more described the first numerical value of described target BS and described at least one second value generates comparative result;
Described target BS is determined the speed state of described terminal according to described comparative result.
The step that described target BS obtains the time threshold of at least one speed type corresponding to described at least one residential quarter is:
Described target BS obtains the big or small type of described at least one residential quarter from described terminal history information;
Described target BS is searched the time threshold of at least one speed type corresponding to described at least one residential quarter according to the corresponding relation between the time threshold of cell size type and at least one speed type.
The residential quarter of described at least one residential quarter for not comprising that terminal is left at first described in all residential quarters in the described terminal history information; And/or described at least one residential quarter is to leave order from rear to the first front predetermined quantity residential quarter of ordering according to terminal in all residential quarters in the described terminal history information.
The time threshold of described speed type is terminal is passed through the residential quarter needs along the axis of described residential quarter with predetermined speed time; And/or the time threshold of described speed type is determined according to the permission travel speed of driving trace and described driving trace in the network topology in the geographical environment, the described geographical environment.
The speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state;
Described target BS obtains before the step of the time of staying of at least one residential quarter in all residential quarters in the described terminal history information, and described method also comprises:
Whether described target BS judges the quantity of the residential quarter that comprises in the described terminal history information less than predetermined value, if be yes, determines that then the speed of described terminal is the First Speed state;
Otherwise described target BS is carried out the step of the time of staying of at least one residential quarter in all residential quarters that obtain in the described terminal history information.
On the other hand, provide a kind of target BS, comprising:
Acquiring unit obtains the terminal history information of terminal from source base station;
Estimation unit according to described terminal history information, is estimated the speed state of described terminal.
Described estimation unit comprises:
The first sub-acquiring unit obtains time of staying of at least one residential quarter in all residential quarters in the described terminal history information;
The first addition subelement carries out addition with the time of staying of described at least one residential quarter, generates the first numerical value;
Second obtains subelement, obtains the time threshold of at least one speed type corresponding to described at least one residential quarter;
The second addition subelement carries out respectively addition with the time threshold of the same speed type of described at least one residential quarter, generates at least one second value;
Compare subelement, the size between more described the first numerical value and described at least one second value generates comparative result;
Determine subelement, according to described comparative result, determine the speed state of described terminal.
Described second obtains subelement comprises:
Acquisition module obtains the big or small type of described at least one residential quarter from described terminal history information;
Search module, according to the corresponding relation between the time threshold of cell size type and at least one speed type, search the time threshold of at least one speed type corresponding to described at least one residential quarter.
The speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state;
Described estimation unit also comprises:
Whether judgment sub-unit judges the quantity of the residential quarter that comprises in the described terminal history information less than predetermined value, if be yes, determines that then the speed of described terminal is the First Speed state.
On the other hand, provide a kind of system that estimates terminal velocity, comprising: target BS, source base station, terminal;
Described target BS is used for, and obtains the terminal history information of described terminal from described source base station; And according to described terminal history information, estimate the speed state of described terminal.
Embodiments of the invention have following beneficial effect:
In the such scheme, target BS obtains the terminal history information of terminal from source base station; Described target BS is estimated the speed state of described terminal according to described terminal history information.Processing procedure is fairly simple, thereby in follow-up processing procedure, target BS can according to the friction speed state of terminal, be taked Different Strategies to terminal.
Description of drawings
Fig. 1 is the schematic flow sheet of an embodiment of a kind of method of estimating terminal velocity shown in the present;
Fig. 2 is the schematic flow sheet of another embodiment of a kind of method of estimating terminal velocity shown in the present;
Fig. 3 is the schematic flow sheet of another embodiment of a kind of method of estimating terminal velocity shown in the present;
Fig. 4 is the schematic diagram of the driving trace that passes through the residential quarter of the network topology of residential quarter in the geographical environment and terminal;
Fig. 5 is the schematic flow sheet of embodiment of the method for estimation terminal velocity of the present invention;
Fig. 6 is the structural representation of base station of the present invention;
Fig. 7 is the structural representation of the system of estimation terminal velocity of the present invention.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The UE history Information (terminal history information) that uses among the present invention is at first described.
In 3GPP (third generation partner program) 36.300 agreements, provide the application introduction of UE history Information (terminal history information): be used for recording the historical information in the UE handoff procedure, at source eNB (evolved Node B, evolved base station) in target eNB transmission handover request message, comprises UEHistory Information, this information is listed maximum 16 residential quarters of UE recent visit, in the UE handoff procedure in time of staying of each Serving cell, Celltye (cell size, the cell size type), can store at most the value of 16 residential quarters.If the residential quarter that UE switches continuously is greater than 16, then follow the principle of first in first out, note beginning the attitude for IDLE (free time) in the A residential quarter as UE, then initiation business enters CONNECTED (connection) attitude and mobile the switching enters another one residential quarter B, B is issued with the historical information of this UE in the A residential quarter so, only has the information of a residential quarter A in UE history Information.That is to say that UE history Information records the type of cell list and residential quarter under the state of activation and each residential quarter to its service time.
The method of estimation terminal velocity of the present invention is below described.
As shown in Figure 1, a kind of embodiment who estimates terminal velocity for shown in the present comprises:
Step 11, target BS are obtained the terminal history information of terminal from source base station;
Step 12, described target BS are estimated the speed state of described terminal according to described terminal history information.Speed state can be First Speed state (such as being low speed), second speed state (such as being middling speed), third speed state (such as being high speed) etc., wherein, the speed of First Speed state is less than the speed of second speed state, and the speed of second speed state is less than the speed of third speed state.
In above-described embodiment, owing to comprise each residential quarter that terminal stops and terminal in the terminal history information in the time of staying of each residential quarter, the number of cells that can stop according to terminal or terminal are estimated the speed state of terminal in the time of staying of each residential quarter, and computational methods are fairly simple.
As shown in Figure 2, a kind of another embodiment that estimates the method for terminal velocity for shown in the present comprises:
Step 21, target BS are obtained the terminal history information of terminal from source base station; Wherein, comprise terminal in the terminal history information in the time of staying of each residential quarter and the big or small type of each residential quarter.
Step 22, described target BS are obtained the time of staying of at least one residential quarter in all residential quarters in the described terminal history information; And the time of staying of described at least one residential quarter carried out addition, generate the first numerical value.Optionally, the residential quarter of described at least one residential quarter for not comprising that terminal is left at first described in all residential quarters in the described terminal history information; And/or described at least one residential quarter is to leave order from rear to the first front predetermined quantity residential quarter of ordering according to terminal in all residential quarters in the described terminal history information.
For example, comprise the time of staying of 8 residential quarters and the big or small type of each 8 residential quarters in the terminal history information, 8 residential quarters are left order according to terminal and are clipped to the 1st residential quarter, the 2nd residential quarter until the 8th residential quarter from rear dividing to first ordering.From 8 residential quarters, can select at least one residential quarter, the residential quarter of selecting can not comprise the 1st residential quarter, when terminal begins to switch from first residential quarter like this, get rid of edge part that terminal may be positioned at the middle of first residential quarter or be positioned at first residential quarter uncertain factor of grading, so that estimated result is more accurate.Can that is to say for selecting from back to front from the residential quarter of the selection of 8 residential quarters, select since the 8th residential quarter, like this, so that estimated result has real-time.Also can only select the 8th residential quarter, also can select other 7 residential quarters except the 1st residential quarter.
Step 23, described target BS are obtained the time threshold of at least one speed type corresponding to described at least one residential quarter; And the time threshold of the same speed type of described at least one residential quarter carried out respectively addition, generate at least one second value; The time threshold of described speed type is terminal is passed through the residential quarter needs along the axis of described residential quarter with predetermined speed time; And/or the time threshold of described speed type is determined according to the permission travel speed of driving trace and described driving trace in the network topology in the geographical environment, the described geographical environment.For example, in terminal history information, comprise 8 residential quarters, and when each residential quarter is provided with the time threshold of two speed types (being respectively First Speed type (for example being low speed) and second speed type (for example being low speed)), selection other 7 residential quarters except the 1st residential quarter, and obtain time threshold and the threshold value of the second time of First Speed type corresponding to described 7 residential quarters.Then, with the time threshold addition of the First Speed type of described 7 residential quarters, generate the summation of the time threshold of First Speed type; With the time threshold addition of the second speed type of described 7 residential quarters, generate the summation of the time threshold of second speed type.
Wherein, step 23 comprises: step 231, described target BS are obtained the big or small type of described at least one residential quarter from described terminal history information; Step 232, described target BS are searched the time threshold of at least one speed type corresponding to described at least one residential quarter according to the corresponding relation between the time threshold of cell size type and at least one speed type.In this step, (for example be verysmall (very little) owing to comprise the big or small type of residential quarter in the terminal history information, small (little), medium (in), large (greatly)), can be each residential quarter difference setup times threshold value, but be the time threshold that the identical residential quarter of big or small type arranges at least one speed type, simplify processing method.The time threshold of at least one speed type can be two, and for example, one is the high speed time threshold value, and one is the middling speed time threshold.
Step 24, the size between more described the first numerical value of described target BS and described at least one second value generates comparative result.For example, in this step, the relatively summation of the time threshold of the first numerical value and First Speed type, and the summation that compares the time threshold of the first numerical value and First Speed type.
Step 25, described target BS are determined the speed state of described terminal according to described comparative result.For example, when the first numerical value greater than the time threshold of First Speed type and, think that then terminal is low speed, when the first numerical value less than the time threshold of second speed type and, think that then terminal is at a high speed; The first numerical value be less than or equal to the First Speed type time threshold and, and be greater than or equal to the second speed type time threshold and, think that then terminal is middling speed.
As shown in Figure 3, be a kind of another embodiment that estimates the method for terminal velocity shown in the present, among this embodiment, the speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state.
Described method comprises:
Step 31, target BS are obtained the terminal history information of terminal from source base station;
Step 32, described target BS judge that whether the quantity of the residential quarter that comprises in the described terminal history information is less than predetermined value; If be yes, then execution in step 33, otherwise, execution in step 34.In this step, comprise the number of cells that terminal stops in the terminal history information, by comparing number of cells and predetermined value, can estimate the speed of terminal.Predetermined value can be 2.
Step 33, the speed of determining described terminal is the First Speed state.
Step 34, described target BS are obtained the time of staying of at least one residential quarter in all residential quarters in the described terminal history information; And the time of staying of described at least one residential quarter carried out addition, generate the first numerical value; The residential quarter of described at least one residential quarter for not comprising that terminal is left at first described in all residential quarters in the described terminal history information; And/or described at least one residential quarter is to leave order from rear to the first front predetermined quantity residential quarter of ordering according to terminal in all residential quarters in the described terminal history information.
Step 35, described target BS are obtained the time threshold of at least one speed type corresponding to described at least one residential quarter; And the time threshold of the same speed type of described at least one residential quarter carried out respectively addition, generate at least one second value; The time threshold of described speed type is terminal is passed through the residential quarter needs along the axis of described residential quarter with predetermined speed time; And/or the time threshold of described speed type is determined according to the permission travel speed of driving trace and described driving trace in the network topology in the geographical environment, the described geographical environment.
Step 36, the size between more described the first numerical value of described target BS and described at least one second value generates comparative result;
Step 37, described target BS are determined the speed state of described terminal according to described comparative result.
Below with the LTE system for being, the embodiment of the method for estimation of UE speed is described, utilize the historical information of UE to judge the speed state of UE, for example be high speed, middling speed, low speed.The network topology of residential quarter in one geographical environment and the driving trace of terminal have been shown among Fig. 4, and wherein T1, T2, T3, T4, T5, T6 are that terminal is in the time of staying of each residential quarter.
The big or small type of residential quarter has four kinds, is respectively verysmall (very little), small (little), medium (in), large (greatly).Set verysmall, small, medium, the high speed time threshold value of large residential quarter is respectively T Verysmall_H, T Small_H, T Medium_H, T Large_H, the high speed time threshold value is terminal is passed through the residential quarter needs along the axis of residential quarter with high speed (for example, more than the 120km/h) time.Set verysmall, small, medium, the middling speed time threshold of large residential quarter is respectively T Verysmall_M, T Small_M, T Medium_M, T Large_M, (for example pass through the time that the residential quarter needs as 15km/h~120km/h) along the residential quarter axis take middling speed take the middling speed time threshold as terminal.High speed time threshold value and middling speed time threshold are formulated according to the network topology of reality and the allowed band of travel speed (for example, the velocity interval of train).
As shown in Figure 5, described method comprises:
Step 1, if whether the number of cells among the judgement UE history Information (terminal history information) less than two, then thinks UE do not pass through too much residential quarter greater than predetermined value (for example 2), thinks that UE is low speed.
Step 2 if number of cells is assumed to be N greater than 2, is then carried out addition to the terminal that comprises in the terminal history information the 2nd residential quarter to the respectively time of staying of N residential quarter, with the 2nd residential quarter to the high speed time threshold value of N residential quarter with compare:
T 2+T 3+T 4...+T (N-1)+T (N)<T celltype(2)_H+...+T celltype(N-1)_H+T celltype(N)_H
Wherein, T (N)For the terminal that comprises in the terminal history information at T (N)It is the time of staying in the residential quarter of N for sequence number; T Celltype (N) _ HIt is the high speed time threshold value (being similar to above-mentioned) in the residential quarter of N for default sequence number.Wherein, the sequence number of residential quarter sorted according to the terminal time departure time from morning to night, that is to say, first residential quarter is the residential quarter that terminal is left at first described in all residential quarters in the described terminal history information.
If following formula is set up, judge that then UE is high speed, otherwise proceed next step.
Step 3, the terminal that comprises in the terminal history information is obtained to the respectively time of staying addition of N residential quarter the 2nd residential quarter and, with the 2nd residential quarter to the middling speed time threshold of N residential quarter with compare, as shown in the formula:
T 2+T 3+T 4...+T (N-1)+T (N-1)+T (N)<T celltype(2)_M+...+T celltype(N-1)_M+T celltype(N)_M
Wherein, T Celltype (N) _ MIt is the middling speed time threshold in the residential quarter of N for default sequence number.
If following formula is set up, judge that then UE is medium velocity, otherwise be low speed.
Method of the present invention is utilized the interface message of agreement Plays, can estimate UE velocity interval (high, medium and low), measures the method that obtains terminal velocity with the physical layer of complexity and compares, and is simple and convenient.
Application scenarios one:
Set verysmall, small, medium, the high speed time threshold value of large residential quarter is respectively T Verysmall_H=10s, T Small_H=20s, T Medium_H=30s, T Large_H=80s.
Set verysmall, small, medium, the middling speed time threshold of large residential quarter is respectively T Verysmall_M=100s, T Small_M=200s, T Medium_M=300s, T Large_M=1000s.
Switch to the residential quarter that 5 experience are arranged the history message UE history Information that the UE of B residential quarter carries from the A residential quarter:
1、Cell?Type:verysmall,Time?UE?stayed?in?Cell:20s
2、Cell?Type:small,Time?UE?stayed?in?Cell:40s
3、Cell?Type:large,Time?UE?stayed?in?Cell:300s
4、Cell?Type:large,Time?UE?stayed?in?Cell:800s
5、Cell?Type:medium,Time?UE?stayed?in?Cell:500s
Judge by handling process of the present invention:
(1) quantity of residential quarter is greater than 2, so proceed following judgement;
(2) compare T 2+ T 3+ T 4...+T (N-1)+ T (N)And T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBetween size.
T 2+ T 3+ T 4...+T (N-1)+ T (NBe 40+300+800+500=1540s
T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBe 20+80+80+30=210s
Can find out T 2+ T 3+ T 4...+T (N-1)+ T (N)Greater than T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HSo processing procedure below continuing.
(3) continue to judge T 2+ T 3+ T 4...+T (N-1)+ T (N)With T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBetween size.
T 2+ T 3+ T 4...+T (N-1)+ T (N)Be 40+300+800+500=1540s;
T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBe 200+1000+1000+300=1800s;
So T 2+ T 3+ T 4...+T (N-1)+ T (N)Less than T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ H.
So determine that UE is the middling speed state.
Application scenarios two:
Set verysmall, small, medium, large residential quarter high speed time threshold value is respectively T Verysmall_H=10s, T Small_H=20s, T Medium_H=30s, T Large_H=80s.
Set verysmall, small, medium, large residential quarter middling speed time threshold is respectively T Verysmall_M=100s, T Small_M=200s, T Medium_M=300s, T Large_M=1000s.
Switch to the residential quarter that 1 experience is arranged the history message UE history Information that the UE of B residential quarter carries from A:
1、Cell?Type:small,Time?UE?stayed?in?Cell:360s。
Judge by handling process of the present invention:
(1) quantity of residential quarter is low speed less than 1 so obtain UE.
Application scenarios three:
Set verysmall, small, medium, the high speed time threshold value of large residential quarter is respectively T Verysmall_H=10s, T Small_H=20s, T Medium_H=30s, T Large_H=80s.
Set verysmall, small, medium, the middling speed time threshold of large residential quarter is respectively T Verysmall_M=100s, T Small_M=200s, T Medium_M=300s, T Large_M=1000s.
Switch to the residential quarter that 5 experience are arranged the history message UE history Information that the UE of B residential quarter carries from A:
1、Cell?Type:large,Time?UE?stayed?in?Cell:20s
2、Cell?Type:large,Time?UE?stayed?in?Cell:40s
3、Cell?Type:large,Time?UE?stayed?in?Cell:100s
4、Cell?Type:large,Time?UE?stayed?in?Cell:80s
5、Cell?Type:large,Time?UE?stayed?in?Cell:50s
Judge by handling process of the present invention:
(1) quantity of residential quarter is greater than 2, so proceed following judgement.
(2) compare T 2+ T 3+ T 4...+T (N-1)+ T (N)And T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBetween size.
T 2+ T 3+ T 4...+T (N-1)+ T (N)Be 40+100+80+50=270s.
T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ HBe 80+80+80+80=320s.
So T 2+ T 3+ T 4...+T (N-1)+ T (N)Less than T Celltype (2) _ H+ ...+T Celltype (N-1) _ H+ T Celltype (N) _ H
Fast state so obtain UE.For example, UE is high-speed cruising under RRC CONNECTED attitude, constantly switches, and the time that rests on continuously each residential quarter is unusual weak point all, can judge whereby that UE is in fast state.
As shown in Figure 6, a kind of target BS for shown in the present comprises:
Acquiring unit 61 obtains the terminal history information of terminal from source base station;
Estimation unit 62 according to described terminal history information, is estimated the speed state of described terminal.
Described estimation unit 62 comprises:
The first sub-acquiring unit obtains time of staying of at least one residential quarter in all residential quarters in the described terminal history information;
The first addition subelement carries out addition with the time of staying of described at least one residential quarter, generates the first numerical value;
Second obtains subelement, obtains the time threshold of at least one speed type corresponding to described at least one residential quarter;
The second addition subelement carries out respectively addition with the time threshold of the same speed type of described at least one residential quarter, generates at least one second value;
Compare subelement, the size between more described the first numerical value and described at least one second value generates comparative result;
Determine subelement, according to described comparative result, determine the speed state of described terminal.
Described second obtains subelement comprises:
Acquisition module obtains the big or small type of described at least one residential quarter from described terminal history information;
Search module, according to the corresponding relation between the time threshold of cell size type and at least one speed type, search the time threshold of at least one speed type corresponding to described at least one residential quarter.
The speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state;
Described estimation unit 62 also comprises:
Whether judgment sub-unit judges the quantity of the residential quarter that comprises in the described terminal history information less than predetermined value, if be yes, determines that then the speed of described terminal is the First Speed state.
As shown in Figure 7, be a kind of system that estimates terminal velocity of the present invention, comprise: target BS 71, source base station 72, terminal 73;
Described target BS 71 is used for, and obtains the terminal history information of described terminal 73 from described source base station 72; And according to described terminal history information, estimate the speed state of described terminal 73.
The present invention can be used for following scene: when the zone that has highway, high-speed railway, mobile management is estimated the speed of terminal in the LTE system when switch decision.By considering the speed factor of UE, take different strategies, with the purpose that realizes improving user awareness and avoiding frequently switching.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (11)

1. a method of estimating terminal velocity is characterized in that, comprising:
Target BS obtains the terminal history information of terminal from source base station;
Described target BS is estimated the speed state of described terminal according to described terminal history information.
2. the method for estimation terminal velocity according to claim 1 is characterized in that, described target BS estimates that according to described terminal history information the step of the speed state of described terminal comprises:
Described target BS obtains the time of staying of at least one residential quarter in all residential quarters in the described terminal history information; And the time of staying of described at least one residential quarter carried out addition, generate the first numerical value;
Described target BS obtains the time threshold of at least one speed type corresponding to described at least one residential quarter; And the time threshold of the same speed type of described at least one residential quarter carried out respectively addition, generate at least one second value;
Size between more described the first numerical value of described target BS and described at least one second value generates comparative result;
Described target BS is determined the speed state of described terminal according to described comparative result.
3. the method for estimation terminal velocity according to claim 2 is characterized in that, the step that described target BS obtains the time threshold of at least one speed type corresponding to described at least one residential quarter is:
Described target BS obtains the big or small type of described at least one residential quarter from described terminal history information;
Described target BS is searched the time threshold of at least one speed type corresponding to described at least one residential quarter according to the corresponding relation between the time threshold of cell size type and at least one speed type.
4. the method for estimation terminal velocity according to claim 2 is characterized in that,
The residential quarter of described at least one residential quarter for not comprising that terminal is left at first described in all residential quarters in the described terminal history information; And/or described at least one residential quarter is to leave order from rear to the first front predetermined quantity residential quarter of ordering according to terminal in all residential quarters in the described terminal history information.
5. the method for estimation terminal velocity according to claim 2 is characterized in that, the time threshold of described speed type is terminal is passed through the residential quarter needs along the axis of described residential quarter with predetermined speed time; And/or the time threshold of described speed type is determined according to the permission travel speed of driving trace and described driving trace in the network topology in the geographical environment, the described geographical environment.
6. the method for estimation terminal velocity according to claim 2 is characterized in that, the speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state;
Described target BS obtains before the step of the time of staying of at least one residential quarter in all residential quarters in the described terminal history information, and described method also comprises:
Whether described target BS judges the quantity of the residential quarter that comprises in the described terminal history information less than predetermined value, if be yes, determines that then the speed of described terminal is the First Speed state;
Otherwise described target BS is carried out the step of the time of staying of at least one residential quarter in all residential quarters that obtain in the described terminal history information.
7. a target BS is characterized in that, comprising:
Acquiring unit obtains the terminal history information of terminal from source base station;
Estimation unit according to described terminal history information, is estimated the speed state of described terminal.
8. target BS according to claim 7 is characterized in that, described estimation unit comprises:
The first sub-acquiring unit obtains time of staying of at least one residential quarter in all residential quarters in the described terminal history information;
The first addition subelement carries out addition with the time of staying of described at least one residential quarter, generates the first numerical value;
Second obtains subelement, obtains the time threshold of at least one speed type corresponding to described at least one residential quarter;
The second addition subelement carries out respectively addition with the time threshold of the same speed type of described at least one residential quarter, generates at least one second value;
Compare subelement, the size between more described the first numerical value and described at least one second value generates comparative result;
Determine subelement, according to described comparative result, determine the speed state of described terminal.
9. target BS according to claim 8 is characterized in that, described second obtains subelement comprises:
Acquisition module obtains the big or small type of described at least one residential quarter from described terminal history information;
Search module, according to the corresponding relation between the time threshold of cell size type and at least one speed type, search the time threshold of at least one speed type corresponding to described at least one residential quarter.
10. target BS according to claim 8 is characterized in that, the speed state of described terminal comprises First Speed state and second speed state at least, and the speed of described First Speed state is less than the speed of second speed state;
Described estimation unit also comprises:
Whether judgment sub-unit judges the quantity of the residential quarter that comprises in the described terminal history information less than predetermined value, if be yes, determines that then the speed of described terminal is the First Speed state.
11. a system that estimates terminal velocity is characterized in that, comprising: target BS, source base station, terminal;
Described target BS is used for, and obtains the terminal history information of described terminal from described source base station; And according to described terminal history information, estimate the speed state of described terminal.
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