CN101442786A - Method and apparatus for determining target district - Google Patents

Method and apparatus for determining target district Download PDF

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Publication number
CN101442786A
CN101442786A CNA2008101868533A CN200810186853A CN101442786A CN 101442786 A CN101442786 A CN 101442786A CN A2008101868533 A CNA2008101868533 A CN A2008101868533A CN 200810186853 A CN200810186853 A CN 200810186853A CN 101442786 A CN101442786 A CN 101442786A
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CN
China
Prior art keywords
base station
abutting subdistrict
terminal
respect
movement rate
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CNA2008101868533A
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Chinese (zh)
Inventor
李剑波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CNA2008101868533A priority Critical patent/CN101442786A/en
Publication of CN101442786A publication Critical patent/CN101442786A/en
Priority to PCT/CN2009/075862 priority patent/WO2010075744A1/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Abstract

The embodiment of the invention discloses a method and device for determining target cell, relating to mobile communication technology field, means to solve problem of excessive switching times of target cell when UE is mobile. The method comprises: receiving terminal movement rate relative to adjacent cell base station transmitted by terminal; judging if the adjacent cell base station is located at movement direction of the terminal according to the adjacent cell information; determining switched target cell according to receiving terminal movement rate relative to adjacent cell base station in adjacent cell. Method and device provided by the embodiment of the invention is suitable for accurately positioning target cell under UE movement state.

Description

Determine the method and the device of Target cell
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of method and device of definite Target cell.
Background technology
At present at LTE (Long Time Evolution, Long Term Evolution) in the project, when portable terminal carries out the sub-district switching, the selection of Target cell mainly is that network side is according to UE (User Equipment, subscriber equipment) to RSRP (the Reference Signal Receive Power of Target cell, Reference Signal Received Power) or RSRQ (Reference Signal Receive Quality, Reference Signal Received Quality) measurement result selects suitable Target cell for UE in conjunction with the neighboring BS relationship between Serving cell and the Target cell; Generally speaking, all directly UE is reported among RSRP or the RSRQ maximum corresponding district as the preferred object sub-district in the prior art.
State in realization in the process of Target cell switching, the inventor finds that there are the following problems at least in the prior art:
When carrying out that Target cell switches and UE is kept in motion, because the Target cell that network side is selected may be also inconsistent with the direction of motion of UE, the direction of motion that is to say UE might be away from the selected Target cell of network side, and UE must carry out the Target cell switching at short notice again like this.Particularly under UE is in high-speed moving state (the UE movement velocity is greater than 75km/h) because the high-speed motion of UE can cause frequent switching target small area, causes switching times to increase, thereby causes UE to measure the increase of load and the decline of user experience.
Summary of the invention
Embodiments of the invention provide a kind of method and device of definite Target cell, the too much problem of switching times in the Target cell handoff procedure when being kept in motion in order to solve UE.
Embodiments of the invention adopt following technical scheme:
A kind of method of definite Target cell comprises:
The described terminal that receiving terminal sends is with respect to the movement rate of abutting subdistrict base station;
Judge according to adjacent district information whether described abutting subdistrict base station is positioned on the described terminal direction of motion;
At the abutting subdistrict that is arranged in the place, abutting subdistrict base station on the described terminal direction of motion, determine the Target cell of switching with respect to the movement rate of abutting subdistrict base station according to the described terminal that receives.
A kind of method of definite Target cell comprises:
Measuring terminals is with respect to the movement rate of abutting subdistrict base station;
Report the movement rate of described terminal to the current service network with respect to the abutting subdistrict base station.
A kind of base station comprises:
Receiving element is used for the movement rate of the described terminal of receiving terminal transmission with respect to the abutting subdistrict base station;
Judging unit is used for judging according to adjacent district information whether described abutting subdistrict base station is positioned at the described terminal direction of motion;
Determining unit is used at the abutting subdistrict that is positioned at the place, abutting subdistrict base station on the described terminal direction of motion, and the terminal that receives according to described receiving element is determined the Target cell that switches with respect to the movement rate of abutting subdistrict base station.
A kind of terminal equipment comprises:
Measuring unit is used for the movement rate of measuring terminals with respect to the abutting subdistrict base station;
Report the unit, be used for reporting the movement rate of the described terminal of described measuring unit acquisition with respect to the abutting subdistrict base station to the current service network.
The embodiment of the invention provides the method and the device of the sub-district that sets the goal really, in the process of carrying out the Target cell switching, introduced the directivity factor of portable terminal, by judging the relation of the abutting subdistrict base station and the terminal direction of motion, Target cell is positioned at consistent with the terminal moving direction, promptly be arranged in the abutting subdistrict on the terminal direction of motion, thereby avoided not considering that Target cell switches the problem that frequently causes terminal to measure burden under the situation of terminal moving direction; The embodiment of the invention provides the method and the device of the sub-district that sets the goal really, can effectively improve the efficient of Target cell switching and reduce the overhead that the terminal measurement brings.
Description of drawings
Fig. 1 provides the method flow diagram of the sub-district that sets the goal really for the embodiment of the invention one;
The device schematic diagram of the base station that Fig. 2 provides for the embodiment of the invention one;
Fig. 3 provides the method flow diagram of the sub-district that sets the goal really for the embodiment of the invention two;
The device schematic diagram of the terminal equipment that Fig. 4 provides for the embodiment of the invention two;
Fig. 5 provides the method flow diagram of the sub-district that sets the goal really for the embodiment of the invention three;
The device schematic diagram of the base station that Fig. 6 provides for the embodiment of the invention three;
The device schematic diagram of the terminal equipment that Fig. 7 provides for the embodiment of the invention three;
Fig. 8 provides the system schematic of the sub-district that sets the goal really for the embodiment of the invention four.
Embodiment
Cause Target cell frequently to switch, increase the weight of the problem of systematic survey load at the UE high-speed motion, available technology adopting the method for sub-district layering: macrocell layer and microcell level are set, and determine that different layer is with point and different layer alien frequencies frequency again and again; Generally speaking, UE different layer with frequency on the strongest pilot tone of search and insert the sub-district; For the fast moving user, it does not carry out interlayer and switches in moving process, uses the different layer alien frequencies frequency of macrocell layer to switch to another macrocell from a macrocell without exception; Though the method by the layering of above-mentioned sub-district can reduce the sub-district switching times, the new macrocell layer of introducing of system will take a large amount of Internet resources, and carries out still not considering when layer switches together UE travel direction sexual factor between macrocell.
Because the UE travel direction causes the too much problem of switching times in the Target cell handoff procedure, the embodiment of the invention provides a kind of method and device of definite Target cell in order to solve.Provide the method for the sub-district that sets the goal really and device to be described in detail below in conjunction with accompanying drawing to the embodiment of the invention.
Embodiment one:
As shown in Figure 1, the embodiment of the invention provides a kind of method of definite Target cell, comprising:
11, the described terminal of receiving terminal transmission is with respect to the movement rate of abutting subdistrict base station;
Wherein, described terminal is the velocity component size of speed on described terminal and abutting subdistrict base station line direction that described terminal moves with respect to the movement rate of abutting subdistrict.
12, judge according to adjacent district information whether described abutting subdistrict base station is positioned on the described terminal direction of motion;
Wherein, adjacent district information can be sent by UE, and described adjacent district information can include but not limited to that the reference signal of described abutting subdistrict reports performance number, reference signal to report at least one item in the Doppler frequency deviation value between mass value and described terminal and the described abutting subdistrict base station.
13, the abutting subdistrict that is arranged in the place, abutting subdistrict base station on the described terminal direction of motion that obtains in step 12 obtains the speed of terminal with respect to abutting subdistrict according to step 11, determines the Target cell that switches.
In order to realize the method for above-mentioned definite Target cell better, the embodiment of the invention also provides a kind of base station, as shown in Figure 2, comprises receiving element 21, judging unit 22 and determining unit 23; Wherein,
Receiving element 21 is used for the movement rate of the described terminal of receiving terminal transmission with respect to the abutting subdistrict base station;
Judging unit 22 is used for judging described abutting subdistrict base station according to adjacent district information and whether is positioned at the described terminal direction of motion;
Determining unit 23 is used for the abutting subdistrict that is positioned at the place, abutting subdistrict base station on the described terminal direction of motion that obtains at judging unit 22, and the terminal that obtains according to receiving element 21 is determined the Target cell that switches with respect to the speed of abutting subdistrict.
Wherein, receiving element 21 can also be used for the adjacent district information that receiving terminal sends; Judging unit 22 is used for judging described abutting subdistrict base station according to the adjacent district information that terminal sends and whether is positioned at the described terminal direction of motion.
The embodiment of the invention provides the method and apparatus of the sub-district that sets the goal really, in the process of carrying out the Target cell switching, introduced the directivity factor of portable terminal, by judging the relation of the abutting subdistrict base station and the terminal direction of motion, Target cell is positioned at consistent with the terminal moving direction, promptly be arranged in the abutting subdistrict on the terminal direction of motion, thereby avoided not considering that Target cell switches the problem that frequently causes terminal to measure burden under the situation of terminal moving direction, and effectively improved the efficient that Target cell switches.
Embodiment two:
As shown in Figure 3, the embodiment of the invention provides a kind of method of definite Target cell, comprising:
31, measuring terminals is with respect to the movement rate of abutting subdistrict base station;
32, send the movement rate of described terminal to the current service network with respect to the abutting subdistrict base station.
In order to realize the method for above-mentioned definite Target cell better, the embodiment of the invention also provides a kind of terminal equipment, as shown in Figure 4, comprises measuring unit 41 and reports unit 42; Wherein,
Measuring unit 41 is used to measure the movement rate of terminal with respect to the abutting subdistrict base station;
Report unit 42, be used for sending the movement rate of the described terminal of described measuring unit 41 acquisitions with respect to the abutting subdistrict base station to the current service network.
The embodiment of the invention provides the method and apparatus of the sub-district that sets the goal really, and terminal equipment is reported the current service network with respect to the movement rate of abutting subdistrict base station, determines Target cell for the network based terminal equipment feedack of current service; The Target cell of determining by said method can avoid not considering that Target cell switches the problem that frequently causes terminal to measure burden under the situation of terminal moving direction, and has effectively improved the efficient that Target cell switches.
Embodiment three:
As shown in Figure 5, the embodiment of the invention provides a kind of method of definite Target cell, specifically may further comprise the steps:
51, Current Serving BTS issues the speed measurement request to UE.
It can be to issue a special speed measurement request message that Current Serving BTS issues the speed measurement request mode to UE, also can be to carry described speed measurement request by measuring control messages.
Therefore the cell that does not have portability speed measurement request in existing measurement control messages can will add a speed measurement cell at Current Serving BTS, in order to carry the signaling of described speed measurement request in the measurement control request that UE issues.
52, UE measures its movement rate with respect to the abutting subdistrict base station, and described movement rate is the velocity component size of speed on UE and abutting subdistrict base station line direction that UE moves.
In communication system, during the UE high-speed mobile,, need measure to carry out the correspondent frequency compensation Doppler frequency deviation for fear of the influence of Doppler frequency shift.In the method that Doppler frequency deviation is measured, UE gets access to the Doppler frequency deviation value F between UE and the abutting subdistrict by the power spectrum autocorrelation analysis to the abutting subdistrict reference signal dKnow again
F d = υ × cos θ λ ---formula 1
Wherein, v is the rate travel of UE with respect to the abutting subdistrict base station, i.e. the velocity component size of speed on UE and abutting subdistrict base station line direction that move of UE; θ be UE and abutting subdistrict base station line with the angle between the UE direction of motion, but since herein v be the velocity component of UE translational speed on UE and abutting subdistrict base station line direction, so the θ here is taken as 0; λ is the wavelength of wireless signal.
Because F in the above-mentioned formula 1 d, θ, λ be known quantity, therefore can pass through formula υ=F d* λ calculates the rate travel v of UE with respect to the abutting subdistrict base station.
Because above-mentioned UE is with respect to the rate travel v of abutting subdistrict base station, be the velocity component size of speed on UE and abutting subdistrict base station line direction that UE moves, therefore the value of v is big more, the direction of motion that shows UE is more little with the angle between UE and the abutting subdistrict base station line direction, and we just can think that residing position, abutting subdistrict base station is also just consistent more with the direction of motion of UE.
53, UE sends the movement rate of UE with respect to the abutting subdistrict base station to Current Serving BTS.
UE can send to Current Serving BTS with described movement rate after having measured its movement rate with respect to the abutting subdistrict base station; The mode that UE sends described movement rate can be by the special speed message that reports, and also can be to carry described movement rate information by measurement report.
Therefore when employing was carried the mode of described movement rate information by measurement report, existing measurement report can not carry described movement rate, can add a cell that is used to carry described movement rate in the measurement report that the base station reports at UE.
Because UE is big more with respect to the movement rate v of certain abutting subdistrict base station, this residing position, abutting subdistrict base station is consistent with the direction of motion of UE so, so UE can not feed back its movement rate with respect to all abutting subdistrict base stations to Current Serving BTS; Can carry a speed threshold value by the network side appointment in the measurement control messages that issues by the current service network, UE compares its movement rate and this speed threshold value with respect to the abutting subdistrict base station; UE with respect to the movement rate of a certain abutting subdistrict base station greater than described speed threshold value in, UE is reported Current Serving BTS with respect to the movement rate of this abutting subdistrict.Equally, owing to can not carry described speed threshold value in the existing measurement report, therefore can add one in the measurement report that the base station reports at UE is used to carry the cell of described speed threshold value.
54, the adjacent district information that reports according to UE of Current Serving BTS judges whether described abutting subdistrict base station is positioned on the direction of motion of UE.
UE reports RSRP, RSRQ or the Doppler frequency deviation value F of its abutting subdistrict to Current Serving BTS by measurement report d, RSRP or RSRQ or the F of Current Serving BTS to repeatedly receiving dAnalyze, judge whether described abutting subdistrict base station is positioned on the direction of motion of UE.
At UE when a certain abutting subdistrict base station, its measured RSRP, RSRQ or F dAll increase gradually; As UE during away from a certain abutting subdistrict base station, its measured RSRP, RSRQ or F dAll reduce gradually.By this variation tendency is analyzed, can learn that UE is near described abutting subdistrict base station or away from described abutting subdistrict base station.
With RSRP is example, and generally speaking, near a certain abutting subdistrict base station, this abutting subdistrict base station will be big more in the RSRP at UE place value so for UE; Near in the process of this abutting subdistrict base station, UE is greater than measured value the i-1 time to the i time measured value that this cell base station RSRP carries out at UE.So, we just can carry out the difference summation to the RSRP that repeatedly records, and by judging the result of its difference summation
S RSRP＝Σ(RSRP i-RSRP i-1)
positive and negatively judge whether described abutting subdistrict base station is positioned on the direction of motion of UE.If S RSRPFor on the occasion of, illustrate that the RSRP that repeatedly records increases gradually, UE just can think also that near described abutting subdistrict base station described abutting subdistrict is positioned on the direction of motion of UE; If S RSRPBe negative value, illustrate that the RSRP that repeatedly records reduces gradually, UE just can think also that away from described abutting subdistrict base station described abutting subdistrict is positioned on the opposite direction of UE motion.
By RSRQ or F dJudge described abutting subdistrict base station whether be positioned on the direction of motion of UE process with judge that by RSRP the process whether described abutting subdistrict base station is positioned on the direction of motion of UE is the same, repeat no more herein.
55, determine Target cell.
Be arranged in the abutting subdistrict on the described UE direction of motion in the abutting subdistrict base station, classify the abutting subdistrict of at least one movement rate correspondence of maximum as Target cell.
Abutting subdistrict on the not all UE of being positioned at direction of motion all is suitable as the Target cell of UE, therefore will the abutting subdistrict on the described UE of the being positioned at direction of motion be screened.Because UE is big more with respect to the value of a certain abutting subdistrict base station movement rate v, illustrate that this residing position, abutting subdistrict base station is also just consistent more with the direction of motion of UE, therefore we can be arranged in the abutting subdistrict on the UE direction of motion in its base station, and the abutting subdistrict of choosing at least one maximum movement rate correspondence is as Target cell.
After network side has been determined at least one Target cell, can sort to above-mentioned at least one Target cell with respect to the movement rate of its base station according to UE, choose the Target cell that wherein ranks the first as the preferred object sub-district, come deputy Target cell and select Target cell as inferior, the rest may be inferred for other.
The process of determining the preferred object sub-district can also have other implementation, for example: if take into full account the words of the RSRP and the RSRQ of abutting subdistrict, can choose at least one the highest abutting subdistrict of RSRP value in the abutting subdistrict or RSRQ value earlier as Target cell, therefrom choose then UE with respect to a Target cell of the movement rate maximum of its base station as the preferred object sub-district; Perhaps at first choose UE with respect at least one abutting subdistrict of the movement rate maximum of its base station as Target cell, therefrom choose a highest Target cell of RSRP value or RSRQ value then as the preferred object sub-district.
In order to realize the method for above-mentioned definite Target cell better, the embodiment of the invention also provides a kind of base station and a kind of terminal equipment.
As shown in Figure 6, the base station that the embodiment of the invention provides comprises:
Receiving element 61 is used to receive its movement rate with respect to the abutting subdistrict base station that UE sends;
Judging unit 62 is used for judging according to adjacent district information whether described abutting subdistrict base station is positioned at the UE direction of motion;
Determining unit 63 is used for the abutting subdistrict that is positioned at the place, abutting subdistrict base station on the UE direction of motion that obtains at judging unit 62, and the UE that receives according to receiving element 61 determines the Target cell that switches with respect to the movement rate of each abutting subdistrict base station.
Wherein, receiving element 61 receives its movement rate with respect to the abutting subdistrict base station that UE sends; Whether judging unit 62 is judged described abutting subdistrict base station according to adjacent district information and is positioned on the UE direction of motion; Afterwards, the movement rate that determining unit 63 receives according to receiving element 61 and the judged result of judging unit 62 are determined Target cell, for example, can be arranged in the abutting subdistrict on the UE direction of motion in described abutting subdistrict base station, choose the abutting subdistrict of at least one maximum movement rate correspondence and classify Target cell as.
Further, the base station that the embodiment of the invention provides can also comprise:
Issue unit 64, be used for the speed measurement request of measuring speed to the UE request of issuing;
Described speed measurement request can send by existing measurement control messages, also can send in a new message.
Above-mentioned receiving element 61 can also be used to receive the adjacent district information that UE sends;
Adjacent district information can comprise RSRP or the RSRQ or the F of the abutting subdistrict that UE sends dAt this moment, above-mentioned judging unit 62 specifically is used to judge RSRP or the RSRQ or the F of the described abutting subdistrict that repeatedly measures dVariation tendency;
If the RSRP of described abutting subdistrict or RSRQ or F dBecome big gradually, then described sub-district is positioned on the direction of motion of described terminal; If the RSRP of described abutting subdistrict or RSRQ or F dDiminish gradually, then described sub-district is positioned on the opposite direction of described terminal motion.
As shown in Figure 7, the terminal equipment that the embodiment of the invention provides comprises:
Measuring unit 71 is used to measure the movement rate of UE with respect to the abutting subdistrict base station;
Report unit 72, be used for reporting the movement rate of UE with respect to the abutting subdistrict base station to Current Serving BTS.
Wherein, measuring unit 71 is measured the movement rate of UE with respect to the abutting subdistrict base station, and described movement rate is the velocity component size of speed on UE and abutting subdistrict base station line direction that UE moves; Afterwards, the UE that reports unit 72 to report to the current service network to get access to by measuring unit 71 is with respect to the movement rate of abutting subdistrict base station.
Above-mentioned measuring unit 71 further comprises: measurement module 711 and computing module 712; Wherein,
Measurement module 711 is used to measure the Doppler frequency deviation value F of UE with respect to the abutting subdistrict base station d
Computing module 712 is used for by formula υ=F d* λ calculates the movement rate of UE with respect to the abutting subdistrict base station, and wherein λ is the wavelength of wireless signal.
The terminal equipment that the embodiment of the invention provides can also comprise:
Receiving element 73 is used to receive the measurement control messages that speed is measured in request that Current Serving BTS issues;
If comprise the speed threshold value in the measurement control messages that receiving element 73 receives, described terminal equipment can also comprise:
Comparing unit 74 compares UE with respect to the movement rate and the described speed threshold value of abutting subdistrict base station; At this moment, the result who reports unit 72 to obtain according to comparing unit 74 reports greater than the described terminal of the described speed threshold value movement rate with respect to the abutting subdistrict base station to the current service network.
The embodiment of the invention provides the method and apparatus of the sub-district that sets the goal really, in the process of carrying out the Target cell switching, introduced the directivity factor of portable terminal, by judging the relation of the abutting subdistrict base station and the terminal direction of motion, Target cell is positioned at consistent with the terminal moving direction, promptly be arranged in the abutting subdistrict on the terminal direction of motion, thereby avoided not considering that Target cell switches the problem that frequently causes terminal to measure burden under the situation of terminal moving direction, and effectively improved the efficient that Target cell switches.
Embodiment four:
As shown in Figure 8, the communication system that the embodiment of the invention provides comprises base station 81 and terminal equipment 82; Wherein,
Base station 81, be used to receive the movement rate of the terminal equipment 82 of described terminal equipment 82 transmissions with respect to the abutting subdistrict base station, and judge described abutting subdistrict base station according to adjacent district information and whether be positioned on the direction of motion of described terminal equipment 82, and be arranged in abutting subdistrict on described terminal equipment 82 directions of motion in described abutting subdistrict base station, according to the movement rate of the terminal equipment that is received, determine the Target cell that switches with respect to each abutting subdistrict base station;
Described terminal equipment 82 is used for itself is measured with respect to the movement rate of abutting subdistrict base station, and measurement result is sent to described base station 81.
The communication system that the embodiment of the invention provides, in the process of carrying out the Target cell switching, introduced the directivity factor of portable terminal, by judging the relation of the abutting subdistrict base station and the terminal direction of motion, Target cell is positioned at consistent with the terminal moving direction, promptly be arranged in the abutting subdistrict on the terminal direction of motion, thereby avoided not considering that Target cell switches the problem that frequently causes terminal to measure burden under the situation of terminal moving direction, and effectively improved the efficient that Target cell switches.
Should be understood that, the method and apparatus that the embodiment of the invention provides can be applied to but be not limited to GSM (Global System for Mobile Communications, global system for mobile communications), CDMA (CodeDivision Multiple Access, code division multiple access), in the communication system of various standards such as WCDMA (Wideband Code Division MultipleAccess, Wideband Code Division Multiple Access (WCDMA)) and LTE.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.

Claims (17)

1, a kind of method of definite Target cell is characterized in that, comprising:
The described terminal that receiving terminal sends is with respect to the movement rate of abutting subdistrict base station;
Judge according to adjacent district information whether described abutting subdistrict base station is positioned on the described terminal direction of motion;
At the abutting subdistrict that is arranged in the place, abutting subdistrict base station on the described terminal direction of motion, determine the Target cell of switching with respect to the movement rate of abutting subdistrict base station according to the described terminal that receives.
2, the method for definite Target cell according to claim 1, it is characterized in that, describedly determine that with respect to the movement rate of abutting subdistrict base station the Target cell that switches specifically comprises according to the described terminal that receives: with described terminal with respect to an abutting subdistrict of the movement rate maximum of abutting subdistrict base station as the preferred object sub-district.
3, the method for definite Target cell according to claim 1 is characterized in that, before the movement rate of described terminal with respect to the abutting subdistrict base station that described receiving terminal sends, also comprises:
Measure the measurement control messages of speed to the terminal request of issuing.
4, the method for definite Target cell according to claim 3 is characterized in that, carries the speed threshold value in the described measurement control messages, and the movement rate that described terminal sends is all greater than described speed threshold value.
5, the method for definite Target cell according to claim 1 is characterized in that, also comprises: the adjacent district information that receiving terminal sends;
Describedly judge according to adjacent district information whether described abutting subdistrict base station is positioned on the described terminal direction of motion and be specially: judge according to the adjacent district information that terminal sends whether described abutting subdistrict base station is positioned on the described terminal direction of motion.
6, the method for definite Target cell according to claim 5 is characterized in that, the described adjacent district information that sends according to terminal judges that whether described abutting subdistrict base station is positioned on the described terminal direction of motion, is specially:
Receive the adjacent district information that described terminal sends; Described adjacent district information comprises that reference signal reports performance number, reference signal to report in the Doppler frequency deviation value between mass value, described terminal and the described abutting subdistrict base station at least one;
According at least twice adjacent district information that receives, judge that the reference signal of described abutting subdistrict reports performance number or reference signal to report the variation tendency of the Doppler frequency deviation value between mass value or described terminal and the described abutting subdistrict base station;
If the adjacent district information of described abutting subdistrict is the change main trend, determine that described abutting subdistrict base station is positioned on the direction of motion of described terminal; If the adjacent district information of described abutting subdistrict is the trend that diminishes, determine that described abutting subdistrict base station is positioned on the opposite direction of described terminal motion.
7, a kind of method of definite Target cell is characterized in that, comprising:
Measuring terminals is with respect to the movement rate of abutting subdistrict base station;
Report the movement rate of described terminal to the current service network with respect to the abutting subdistrict base station.
8, the method for definite Target cell according to claim 7 is characterized in that, before the movement rate of described measuring terminals with respect to abutting subdistrict, also comprises:
The measurement control messages of speed is measured in the request that reception current service network issues.
9, the method for definite Target cell according to claim 8, it is characterized in that, if comprise the speed threshold value in the described measurement control messages, before the current service network reports the movement rate of described terminal with respect to the abutting subdistrict base station, also comprise described:
Movement rate and the described speed threshold value of described terminal with respect to the abutting subdistrict base station compared;
Describedly report described terminal to be: to report greater than the described terminal of described speed threshold value movement rate with respect to the abutting subdistrict base station to the current service network with respect to the movement rate of abutting subdistrict base station to the current service network.
10, the method for definite Target cell according to claim 7 is characterized in that, described measuring terminals is specially with respect to the movement rate of abutting subdistrict base station:
Measure the Doppler frequency deviation value Fd of terminal with respect to the abutting subdistrict base station;
According to formula υ=F d* λ calculates the movement rate of terminal with respect to the abutting subdistrict base station, and wherein λ is the wavelength of wireless signal.
11, a kind of base station is characterized in that, comprising:
Receiving element is used for the movement rate of the described terminal of receiving terminal transmission with respect to the abutting subdistrict base station;
Judging unit is used for judging according to adjacent district information whether described abutting subdistrict base station is positioned at the described terminal direction of motion;
Determining unit is used at the abutting subdistrict that is positioned at the place, abutting subdistrict base station on the described terminal direction of motion, and the terminal that receives according to described receiving element is determined the Target cell that switches with respect to the movement rate of abutting subdistrict base station.
12, base station according to claim 11 is characterized in that, also comprises:
Issue the unit, be used for measuring the measurement control messages of speed to the terminal request of issuing.
13, base station according to claim 11 is characterized in that,
Described receiving element also is used to receive the adjacent district information that described terminal sends; Described adjacent district information comprises that the reference signal of abutting subdistrict reports performance number, reference signal to report in the Doppler frequency deviation value between mass value, described terminal and the described abutting subdistrict base station at least one;
Described judging unit, the variation tendency that is used at least twice adjacent district information that described receiving element is received is judged; When described adjacent district information is the change main trend, determine that described abutting subdistrict base station is positioned on the direction of motion of described terminal; When described adjacent district information is when diminishing trend, determine that described abutting subdistrict base station is positioned on the opposite direction of described terminal motion.
14, a kind of terminal equipment is characterized in that, comprising:
Measuring unit is used for the movement rate of measuring terminals with respect to the abutting subdistrict base station;
Report the unit, be used for reporting the movement rate of the described terminal of described measuring unit acquisition with respect to the abutting subdistrict base station to the current service network.
15, terminal equipment according to claim 14 is characterized in that, also comprises:
Receiving element is used to receive the measurement control messages that speed is measured in request that the current service network issues.
16, terminal equipment according to claim 15 is characterized in that, also comprises the speed threshold value in the described measurement control messages, and described terminal equipment also comprises:
Comparing unit is used for movement rate and the described speed threshold value of described terminal with respect to the abutting subdistrict base station compared; And
The described unit that reports also is used for reporting greater than the described terminal of the described speed threshold value movement rate with respect to the abutting subdistrict base station to the current service network.
17, terminal equipment according to claim 14 is characterized in that, described measuring unit comprises:
Measurement module is used to measure the Doppler frequency deviation value F of terminal with respect to the abutting subdistrict base station d
Computing module is used for according to formula υ=F d* λ calculates the movement rate of terminal with respect to the abutting subdistrict base station, and wherein λ is the wavelength of wireless signal.
CNA2008101868533A 2008-12-31 2008-12-31 Method and apparatus for determining target district Pending CN101442786A (en)

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