CN102098724B - Positioning method, and method and device for reporting loop time - Google Patents
Positioning method, and method and device for reporting loop time Download PDFInfo
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- CN102098724B CN102098724B CN 201110073493 CN201110073493A CN102098724B CN 102098724 B CN102098724 B CN 102098724B CN 201110073493 CN201110073493 CN 201110073493 CN 201110073493 A CN201110073493 A CN 201110073493A CN 102098724 B CN102098724 B CN 102098724B
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Abstract
The invention discloses a method for reporting loop time, which presets a mapping table for reporting loop time according to the range of a wide coverage cell. The method comprises the following steps of: acquiring a loop time measurement value, obtaining a corresponding loop time report value by mapping according to the preset mapping table for reporting loop time, and reporting the loop time report value. The method for reporting loop time provided by the invention sets the mapping table for reporting loop time according to the coverage range of the cell, so the loop time report value which is mapped and reported by the set mapping table for reporting loop time can represent the coverage range of the cell. Meanwhile, the invention further discloses a positioning method. The positioning method provided by the invention realizes positioning of the user equipment in the wide coverage. Besides, the invention further discloses a device for reporting loop time.
Description
Technical field
The present invention relates to mobile communication technology, espespecially a kind of localization method, and the square law device of reporting round-trip time.
Background technology
Third generation joint working group (3GPP, 3
rdGeneration Partnership Project) three kinds of localization methods have been defined.Wherein, cell ID (CellId) adds winding time (RTT, Round Trip Time) location technology to the process that subscriber equipment (UE) positions is: at first radio network controller (RNC) is initiated the RTT measurement to base station node B, and initiates the measurement of transmitting-receiving time difference Rx-Tx to UE; Then, UE is with the measurement result T of Rx-Tx
0Report to RNC, NodeB also reports the measurement result of RTT to RNC simultaneously; At last, RNC is according to (the RTT-T of through type as a result that reports
0)/2 calculate, and centered by NodeB, the circumference of NodeB to UE distance as radius, then cell range determined according to CellID realizes the location to UE.
In theory, RTT sends downstream signal from NodeB to UE, receives the time interval between the upward signal that sends from UE to NodeB.Because UE is receiving downstream signal to sending upward signal to there being transmitting-receiving time difference Rx-Tx NodeB from NodeB, therefore in the process of NodeB actual measurement RTT, the measured value of RTT has comprised the transmitting-receiving time difference Rx-Tx of UE, so in the operation of Practical Calculation radius of a circle, RNC can after obtaining the RTT measured value that NodeB reports, deduct the transmitting-receiving time difference T that UE produces in position fixing process
0, to realize location more accurately.According to 3GPP agreement transmitting-receiving time difference Rx-Tx measurement result T
0Scope be 1024 ± 148chip, namely 876～1172chip.
In prior art, NodeB reports the process of RTT measured value to be to RNC: after NodeB measures the RTT measured value, report mapping table that the mapping of RTT measured value is obtained corresponding RTT report value according to the RTT that self stores, the RTT report value is reported RNC; After RNC received the RTT report value that NodeB reports, the RTT according to self storage reported mapping table that the RTT report value is mapped to the RTT measured value equally.
Table one reports mapping table for the RTT that uses in prior art CellId+RTT position fixing process.
| Report value | Measured value | Unit |
| RT_TIME_0000 | Round trip time＜876.0000 | chip |
| RT_TIME_0001 | 876.0000≤Round trip time＜876.0625 | chip |
| RT_TIME_0002 | 876.0625≤Round trip time＜876.1250 | chip |
| RT_TIME_0003 | 876.1250≤Round trip time＜876.1875 | chip |
| … | … | … |
| RT_TIME_32764 | 2922.6875≤Round trip time＜2923.7500 | chip |
| RT_TIME_32765 | 2923.7500≤Round trip time＜2923.8125 | chip |
| RT_TIME_32766 | 2923.8125≤Round trip time＜2923.8750 | chip |
| RT_TIME_32767 | 2923.8750≤Round trip time | chip |
Table one
Before introducing table one, paper is used for reporting the RTT message of RTT report value once.Wherein, RTT message is that NodeB reports the message of RTT report value to RNC.In RTT message, the attribute that is used for defining the RTT report value comprises, bit wide: RTT report value shared bit number in RTT message; RTT measured value quantified precision; RTT orientation range, the i.e. scope of the RTT report value RTT measured value that can represent.
The value of the RTT message attributes of using in table one is respectively, and RTT report value bit wide is that 15 bits, RTT measured value quantified precision are that 1/16chip, RTT orientation range are 0 to 2047.875chip.Because the bit wide of using in prior art is 15 bits, the quantified precision that uses is 1/16chip, therefore claim also that at this bit wide 15 bits are that standard bit wide, quantified precision 1/16chip are the criterion and quantity precision.
RTT shown in table one reports mapping table to comprise, RTT report value, three contents of RTT measured value and unit.According to the standard attribute value in RTT message, in table one, the scope of RTT report value is that 0～215-1 is that 0～32767, RTT report value is arranged in the first row of table one in the mode that increases progressively.Have corresponding relation between the RTT measured value of RTT report value and the delegation that coexists, this corresponding relation is to set up according to RTT report value, RTT measured value quantified precision and minimum transmitting-receiving time difference, is specially: (RTT
R-1) * Step+876≤RTT
M＜RTT
R* Step+876, wherein, RTT
RBe report value, RTT
MFor measured value, Step are quantified precision, 876 is the fixed value of using when the RTT measured value is mapped to the RTT report value, and reality is exactly to be transmitting-receiving time difference measurements value T
0Minimum value, therefore, claim 876 be the minimum time difference T of transmitting-receiving.When RTT measured value quantified precision was criterion and quantity precision 1/16chip, the mapping relations between RTT report value and RTT measured value were in Table 1: (RTT
R-1) * 1/16+876≤RTT
M＜RTT
R* 1/16+876.It is chip (chip) that RTT reports the unit in mapping table, and 1chip is equivalent to 78.125 meters, according to this conversion relation and formula (RTT-T
0)/2 can converse the RTT measured value range that in table one, the RTT report value can represent: 0～((2
15-2)/16+876-T
080 kilometers of)/2 * 78.125 ≈ wherein suppose T
0Get 876chip.
Under wide the covering, as in the situation that the coverage of residential quarter greater than 80 kilometers, although NodeB can measure the distance greater than 80 kilometers, but the RTT measured value range that can represent due to RTT report value maximum is approximately 80 kilometers, therefore far away apart from NodeB as UE, exceed 80 kilometers or farther the time, the RTT report value just can't be more accurately represents the RTT measured value of NodeB measurement, thereby also just can not accurately locate UE, affect the accuracy of location.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of reporting round-trip time, uses the expression scope that the method can make winding time report value, is adapted to flexibly the size of cell coverage area.
In addition, another main purpose of the present invention is to provide a kind of localization method, and application the method can realize the location under wide coverage.
Simultaneously, another main purpose of the present invention is to provide a kind of device of reporting round-trip time, uses the expression scope that this device can make winding time report value, is adapted to flexibly the size of cell coverage area.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of reporting round-trip time, according to the scope of wide coverage cell is set the winding time in advance and reports mapping table; Carry out following steps:
Obtain the winding time measured value, and report mapping table according to the winding time that sets in advance, mapping obtains corresponding winding time report value, reports described winding time report value.
Simultaneously the present invention also provides a kind of localization method, according to wide coverage is set the winding time in advance and reports mapping table; The method comprises the following steps:
Obtaining the winding time obtains the winding time measured value, and reports the mapping table mapping to obtain winding time report value according to the winding time that sets in advance, and positions according to winding time report value user terminal.
Wherein, described to user terminal position for: positioning equipment obtain that base station maps arrives winding time report value, and report mapping table that the report value mapping of winding time is obtained corresponding winding time measured value according to the winding time that sets in advance; According to the winding time measured value, from transmitting-receiving time difference and the determined cell range of cell ID that user terminal receives, user terminal is positioned.
Better, describedly the winding time is set reports mapping table to be:
A11, be defined as representing wide coverage, the required bit wide of winding time report value;
Bit wide and criterion and quantity precision that a12, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A13, the corresponding relation that step a12 is calculated write the winding time and report mapping table.
Better, in step a11, the required bit wide of described definite winding time report value is: determine winding time report value on the basis of standard bit wide, the bit of required increase;
In step a12, the described calculating winding time measured value corresponding with each winding time report value is: the newly-increased winding time report value for increasing bit, calculate corresponding winding time measured value;
In step a13, describedly the corresponding relation that calculates is write the winding time report mapping table to be: will increase bit and newly-increased winding time report value and the corresponding relation between the winding time measured value, and be added into the winding time to report in mapping table.
Better, in step a11, the bit of described definite required increase is:
Calculate
Needing to obtain the bit of increase, wherein W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation.
Better, in step a12, described calculating winding time measured value is:
Calculate respectively (RTT
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T arrives less than RTT
RThe determined scope of * Step+T is RTT
RCorresponding winding time measured value;
Wherein, RTT
RBe newly-increased winding time report value, Step is the criterion and quantity precision, and T is the minimum transmitting-receiving time difference.
Better, describedly the winding time is set reports mapping table to be:
A21, be defined as the quantified precision that represents that wide coverage is required;
Quantified precision and standard bit wide that a22, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A23, the corresponding relation that step a22 is calculated write the winding time and report mapping table.
Better, in step a21, described definite required quantified precision is:
Calculate
Obtain the multiple of required reduction quantified precision; Calculate again Step * 2
xObtain required quantified precision;
Wherein, Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
Better, describedly the winding time is set reports mapping table to be:
A31, be defined as representing quantified precision that wide coverage is required and the bit wide of winding time report value;
Quantified precision and bit wide that a32, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A33, the corresponding relation that step a32 is calculated write the winding time and report mapping table.
Better, in step a31, described definite required quantified precision and bit wide is:
Calculate
The summation of the multiple of the bit that obtains increasing and reduction quantified precision; The bit that first determine to increase, then with the be reduced multiple of quantified precision of the bit that summation deducts increase, calculate Step * 2
xThe quantified precision that obtains determining adds with the bit that increases the bit wide that the standard bit wide obtains determining; Or first determine to reduce the multiple of quantified precision, calculate Step * 2
xQuantified precision after being reduced, then deduct according to summation the bit that the multiple that reduces quantified precision obtains increasing, the bit that increases is added the bit wide that the standard bit wide obtains determining;
Wherein, W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation, and Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
Better, winding time measured value corresponding to described calculating winding time report value is:
Calculate respectively (RTT
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T arrives less than RTT
RThe determined scope of * Step+T is RTT
RCorresponding winding time measured value, wherein, RTT
RFor the winding time reports all winding time report values in mapping table, Step is quantified precision after reducing, and T is the minimum transmitting-receiving time difference.
In addition, the present invention also provides a kind of device of reporting round-trip time, and this device comprises: acquiring unit, map unit and report the unit; Wherein,
Acquiring unit is used for obtaining the winding time measured value;
Map unit reports mapping table for the winding time is set; And the winding time measured value that obtains according to acquiring unit, report mapping table to obtain corresponding winding time report value according to the winding time;
Report the unit, be used for the winding time report value that reports the map unit mapping to obtain.
Better, described device is positioned at the base station.
The method of a kind of reporting round-trip time provided by the present invention arranges the winding time according to cell coverage area and reports mapping table; Report mapping table, the reporting round-trip time report value according to the winding time that arranges.In the present invention, owing to being that coverage according to the residential quarter arranges the winding time and reports mapping table, the winding time report value that therefore reports the mapping table mapping to obtain by the winding time can represent the coverage of described residential quarter.Simultaneously, the present invention also provides a kind of localization method, and this localization method arranges RTT according to the wide location needs that cover and reports mapping table, has enlarged RTT and has reported mapping table to represent scope, has realized the location under wide covering.In addition, the present invention also provides a kind of device of reporting round-trip time.
Description of drawings
Fig. 1 is that the embodiment of the present invention realizes the flow chart of location under wide the covering;
Fig. 2 is the structure chart of the device of embodiment of the present invention reporting round-trip time.
Embodiment
Core concept of the present invention is: according to cell coverage area is set the winding time and reports mapping table; After obtaining the winding time measured value, report mapping table according to the winding time that arranges, mapping obtains corresponding winding time report value, reports described winding time report value, and then the expression scope of winding time report value, can flexible adaptation in the variation of cell coverage area size.
In the introduction of following examples, article be: the method for reporting round-trip time provided by the invention is applied to the wide situation that covers the location of lower user terminal.Certainly, the method for reporting round-trip time provided by the invention is not limited in the scene that under wide covering, user terminal is located.
Corresponding relation between the time measured value of winding described in the present invention and winding time report value is stored in the winding time and reports in mapping table.When utilizing the location of reporting round-trip time method of the present invention under extensively covering, at first according to wide coverage is set the winding time and reports mapping table; Then NodeB measures the winding time, and reporting mapping table that this winding time measured value is mapped to corresponding winding time report value according to the winding time that arranges, the transmitting-receiving time difference that the winding time measured value that the winding time report value of positioning equipment after according to mapping is corresponding and user measure positions user terminal.
The present invention realizes that the positioning equipment that the user is positioned is not limited only to RNC or the centre of location, and the method that specifically user terminal is positioned also is not limited to based on Cell-ID or observed time difference (OTDOA).Below only be described in detail as implementing entity with RNC.
For make technical scheme of the present invention clearer, understand, below by positioning flow shown in Figure 1, technical scheme of the present invention is described in more detail.Concrete steps in Fig. 1 are as follows:
Step 101: according to the scope of wide covering, RTT is set reports mapping table.
In the present invention, can revise the attribute that is used for expression RTT report value in RTT message according to the scope of wide covering, and then report mapping table according to amended setup of attribute RTT.Here, the method for revising the attribute that is used for expression RTT message value in RTT message comprises: increase for expression RTT report value bit wide, namely increase bit in the standard bit wide; Or reduction RTT measured value quantified precision; Or increase simultaneously RTT report value bit wide and reduce RTT measured value quantified precision.
When RTT report value bit wide is that 15 bits, RTT measured value quantified precision are in the situation of 1/16chip, calculating through the front, it is 80 kilometers that RTT reports the orientation range that in mapping table, the RTT measured value can represent, claims that at this orientation range of 80 kilometers is the standard setting scope.In general, one times of every increase by 1 bit of RTT report value bit wide or the every reduction of RTT measured value quantified precision, the scope that the RTT measured value can be located all can double accordingly.For example, if RTT report value bit wide is increased by 1 bit, the bit wide after increasing is 16 bits, according to ((2
16-2)/16+876-T
0160 kilometers of)/2 * 78.125 ≈, wherein T
0Get 876chip, RTT reports that in mapping table, the RTT measured value can represent the scope of 160 kilometers; Moreover if RTT measured value quantified precision is reduced by 1 times, the quantified precision after reducing is 1/8chip, according to ((2
15-2)/8+876-T
0)/2 * 78.125 ≈ 160 wherein supposes T
0=876chip, the RTT measured value also can represent the scope of 160 kilometers, can realize the location in 160 kilometer range.RTT measured value quantified precision reduces by 1 times, shows as on the basis of former quantification precision and multiply by 2; If RTT measured value quantified precision reduces by 1 times again, show as on the basis of former quantification precision and multiply by 4, be i.e. 1/16chip * 4=1/4chip; Namely reducing the multiple of quantified precision and the pass between the quantified precision after reduction is Step * 2
x, wherein Step is the quantified precision before reducing, x is for reducing the multiple of quantified precision.
Therefore, the present invention is according to scope and the calculating formula of wide covering
The value that obtains, definite mode of revising the RTT message attributes, wherein W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation.for example, for greater than 80 kilometers wide covering orientation ranges less than 160 kilometers, the value that process obtains after calculating is 1, the mode of revising the RTT message attributes can be to increase by 1 bit on the basis of primary standard bit wide 15 bits, obtain 16 bit bit wides, or reducing by 1 times of RTT measured value quantified precision, the quantified precision after reducing is 1/16 * 2=1/8chip, for greater than 160 kilometers less than 320 wide covering orientation range, the value that process obtains after calculating is 2, revising RTT message attributes mode this moment can be the RTT report value bit wide that increases by 2 bits, bit wide after increasing is 17 bits, or reduce by 2 times of RTT measured value quantified precisions, RTT measured value quantified precision after reducing is 1/4chip, perhaps can also increase simultaneously RTT report value bit wide is that 16 bits and reduction RTT measured value quantified precision are 1/8chip, concrete which kind of alter mode of selecting can determine according to the actual motion environment of network and the performance of network.
If increase the bit wide of RTT report value, relative set RTT reports the method for mapping table to be, the RTT report value that increases for newly-increased bit wide calculates corresponding RTT measured value, and add RTT to report mapping table newly-increased RTT report value and corresponding RTT measured value, and then make the RTT of setting report mapping table can represent the scope of wide coverage cell.
Wherein, computational methods are: (RTT
R-1) * 1/16+876≤RTT
M＜RTT
R* 1/16+876, RTT wherein
RExpression RTT report value, RTT
MWhat represent is the RTT measured value, and 1/16chip used herein is the criterion and quantity precision.For example, be 16 bits in the situation that increase RTT report value bit wide, needing to report newly-increased RTT report value in mapping table at RTT is 32768 to 65535 list item, according to computational methods, each newly-increased RTT report value is calculated corresponding RTT measured value.As, when the RTT report value is 65534, its corresponding RTT measured value is 4971.8125≤RTT
M＜4971.8750, RTT wherein
MWhat represent is the RTT measured value.According to calculating result, be added into table one according to the corresponding relation between RTT report value and RTT measured value, the RTT that obtains as shown in Table 2 reports mapping table.
| Report value | Measured value | Unit |
| RT_TIME_0000 | Round trip time＜876.0000 | chip |
| RT_TIME_0001 | 876.0000≤Round trip time＜876.0625 | chip |
| RT_TIME_0002 | 876.0625≤Round trip time＜876.1250 | chip |
| RT_TIME_0003 | 876.1250≤Round trip time＜876.1875 | chip |
| … | … | … |
| RT_TIME_32765 | 2923.7500≤Round trip time＜2923.8125 | chip |
| RT_TIME_32766 | 2923.8125≤Round trip time＜2923.8750 | chip |
| RT_TIME_32767 | 2923.8750≤Round trip time＜2923.9375 | chip |
| RT_TIME_32768 | 2923.9375≤Round trip time＜2924 | chip |
| … | … | … |
| RT_TIME_65534 | 4971.8125≤Round trip time＜4971.8750 | chip |
| RT_TIME_65535 | 4971.8750≤Round trip time | chip |
Table two
If it is even higher that the bit wide of RTT report value is increased to 17 bits, according to being that the method for 16 bits is revised RTT and reported mapping table with increasing RTT report value bit wide, detailed process is not described in detail in this too.
If reduce RTT measured value quantified precision, relative set RTT report mapping table method can for, recomputate RTT and report all RTT report values corresponding RTT measured value under the quantified precision after reduction in mapping table, and the result of the RTT measured value that calculates is filled out after corresponding RTT report value, the method for calculating is: (RTT
R-1) * Step+876≤RTT
M＜RTT
R* Step+876, wherein RTT
RBe RTT report value, RTT
MBe the RTT measured value, Step is the quantified precision after reducing.For example, calculating the RTT report value according to above-mentioned formula is that 2 o'clock corresponding RTT measured values are: 876.1250≤RTT
M＜876.2500.The method that RTT reports mapping table is set obtains reporting mapping table as the RTT of table three according to reducing quantified precision according to above-mentioned.
| Report value | Measured value | Unit |
| RT_TIME_0000 | Round trip time＜876.0000 | chip |
| RT_TIME_0001 | 876.0000≤Round trip time＜876.1250 | chip |
| RT_TIME_0002 | 876.1250≤Round trip time＜876.2500 | chip |
| … | … | … |
| RT_TIME_32766 | 4971.6250≤Round trip time＜4971.7500 | chip |
| RT_TIME_32767 | 4971.7500≤Round trip time | chip |
Table three
If not only increase RTT report value bit wide but also reduce RTT measured value quantified precision, relative set RTT reports the method for mapping table to be, the newly-increased RTT report value of at first determining according to the bit wide that increases, and then according to the quantified precision after reducing, utilize formula (RTT
R-1) * Step+876≤RTT
M＜RTT
R* Step+876, wherein RTT
MFor the RTT measured value quantified precision after reducing, calculate corresponding RTT measured value for each RTT report value for RTT measured value, Step, at last all RTT report values are reported mapping table with the RTT that the RTT measured value that calculates is made into as shown in Table 1.
Step 102:RNC sends the request message of measuring Rx-Tx and sends the request message of measuring RTT to NodeB to UE.
Step 103:NodeB reports mapping table according to the RTT that arranges after completing measurement to RTT according to the flow process of prior art, searches according to the RTT measured value and obtains corresponding RTT report value, and the RTT report value is sent to RNC; UE also measures the method for Rx-Tx according to prior art simultaneously, carries out the measurement of Rx-Tx and measurement result is reported RNC.
Step 104:RNC receives the Rx-Tx value that RTT report value that NodeB reports and UE report, RNC reports mapping table to search according to the current RTT report value of receiving according to the RTT that arranges and obtains corresponding RTT measured value, then completes according to the method for prior art according to the Rx-Tx value of searching the RTT measured value that obtains, receiving from UE and the determined cell range of CellId UE is located.
In addition, the present invention also provides a kind of device of reporting round-trip time, the structure of this device as shown in Figure 2: comprise acquiring unit 21, map unit 22 and report unit 23.
Wherein, described acquiring unit 21 is used for obtaining the winding time measured value; Map unit 22, the winding time that is used for arranging reports mapping table; And the winding time measured value that obtains according to acquiring unit 21, the mapping winding time reports mapping table to obtain corresponding winding time report value; Report unit 23, be used for the winding time report value that reports map unit 22 mappings to obtain.
Here, acquiring unit 21 obtains the mode of winding time measured value; Map unit 22 arranges the winding time and reports mapping table, reports mapping table to obtain the mode of winding time report value according to the winding time; And the mode that reports unit 23 reporting round-trip time report values, all can be with reference to the technology that provides in the inventive method embodiment.
Device as above can be positioned at the base station.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.
Claims (18)
1. the method for a reporting round-trip time, is characterized in that, comprising:
Obtain the winding time measured value;
Report mapping table according to the winding time that sets in advance, mapping obtains corresponding winding time report value;
Report described winding time report value to location equipment;
Wherein, being set the winding time reports the mode of mapping table to be:
A11, be defined as representing wide coverage, the required bit wide of winding time report value;
Bit wide and criterion and quantity precision that a12, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A13, the corresponding relation that step a12 is calculated write the winding time and report mapping table.
2. method according to claim 1, is characterized in that,
In step a11, the required bit wide of described definite winding time report value is: determine winding time report value on the basis of standard bit wide, the bit of required increase;
In step a12, the described calculating winding time measured value corresponding with each winding time report value is: the newly-increased winding time report value for increasing bit, calculate corresponding winding time measured value;
In step a13, describedly the corresponding relation that calculates is write the winding time report mapping table to be: will increase bit and newly-increased winding time report value and the corresponding relation between the winding time measured value, and be added into the winding time to report in mapping table.
3. method according to claim 2, is characterized in that, in step a11, the bit of described definite required increase is:
Calculate
Needing to obtain the bit of increase, wherein W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation.
4. according to claim 2 or 3 described methods, is characterized in that, in step a12, described calculating winding time measured value is:
Calculate respectively (RTT
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T arrives less than RTT
RThe determined scope of * Step+T is RTT
RCorresponding winding time measured value;
Wherein, RTT
RBe newly-increased winding time report value, Step is the criterion and quantity precision, and T is the minimum transmitting-receiving time difference.
5. a localization method that utilizes the described reporting round-trip time method of claim 1 to 4 any one, is characterized in that, the method report described winding time report value to location equipment after, further comprising the steps of:
The winding time measured value that positioning equipment is corresponding according to described winding time report value, from transmitting-receiving time difference and the determined cell range of cell ID that user terminal receives, user terminal is positioned.
6. the method for a reporting round-trip time, is characterized in that, comprising:
The base station obtains the winding time measured value;
Described base station reports mapping table according to the winding time that sets in advance, and mapping obtains corresponding winding time report value;
Described base station reports described winding time report value to location equipment;
Wherein, being set the winding time reports mapping table to be:
A21, be defined as the quantified precision that represents that wide coverage is required;
Quantified precision and standard bit wide that a22, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A23, the corresponding relation that step a22 is calculated write the winding time and report mapping table.
7. method according to claim 6, is characterized in that, in step a21, described definite required quantified precision is:
Calculate
Obtain the multiple of required reduction quantified precision; Calculate again Step * 2
xObtain required quantified precision;
Wherein, W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation, and Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
8. according to claim 6 or 7 described methods, is characterized in that, winding time measured value corresponding to described calculating winding time report value is:
Calculate respectively (RTT
R-1) * Step2+T and RTT
R* Step2+T is more than or equal to (RTT
R-1) * Step2+T arrives less than RTT
RThe determined scope of * Step2+T is RTT
RCorresponding winding time measured value, wherein, RTT
RFor the winding time reports all winding time report values in mapping table, Step2 is quantified precision after reducing, and T is the minimum transmitting-receiving time difference.
9. a localization method that utilizes the described reporting round-trip time method of claim 6 to 8 any one, is characterized in that, the method report described winding time report value to location equipment after, further comprising the steps of:
The winding time measured value that positioning equipment is corresponding according to described winding time report value, from transmitting-receiving time difference and the determined cell range of cell ID that user terminal receives, user terminal is positioned.
10. the method for a reporting round-trip time, is characterized in that, comprising:
The base station obtains the winding time measured value;
Described base station reports mapping table according to the winding time that sets in advance, and mapping obtains corresponding winding time report value;
Described base station reports described winding time report value to location equipment;
Wherein, being set the winding time reports mapping table to be:
A31, be defined as representing quantified precision that wide coverage is required and the bit wide of winding time report value;
Quantified precision and bit wide that a32, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A33, the corresponding relation that step a32 is calculated write the winding time and report mapping table.
11. method according to claim 10 is characterized in that, in step a31, described definite required quantified precision and bit wide is:
Calculate
The summation of the multiple of the bit that obtains increasing and reduction quantified precision; The bit that first determine to increase, then with the be reduced multiple of quantified precision of the bit that summation deducts increase, calculate Step * 2
xThe quantified precision that obtains determining adds with the bit that increases the bit wide that the standard bit wide obtains determining; Or first determine to reduce the multiple of quantified precision, calculate Step * 2
xQuantified precision after being reduced, then deduct according to summation the bit that the multiple that reduces quantified precision obtains increasing, the bit that increases is added the bit wide that the standard bit wide obtains determining;
Wherein, W
dBe wide coverage, W
bBe the standard setting scope, [] is rounding operation, and Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
12. according to claim 10 or 11 described methods is characterized in that, winding time measured value corresponding to described calculating winding time report value is:
Calculate respectively (RTT
R-1) * Step2+T and RTT
R* Step2+T is more than or equal to (RTT
R-1) * Step2+T arrives less than RTT
RThe determined scope of * Step2+T is RTT
RCorresponding winding time measured value, wherein, RTT
RFor the winding time reports all winding time report values in mapping table, Step2 is quantified precision after reducing, and T is the minimum transmitting-receiving time difference.
13. a localization method that utilizes the described reporting round-trip time method of claim 10 to 12 any one is characterized in that, the method report described winding time report value to location equipment after, further comprising the steps of:
The winding time measured value that positioning equipment is corresponding according to described winding time report value, from transmitting-receiving time difference and the determined cell range of cell ID that user terminal receives, user terminal is positioned.
14. the device of a reporting round-trip time is characterized in that, this device comprises: acquiring unit, map unit and report the unit; Wherein,
Acquiring unit is used for obtaining the winding time measured value;
Map unit reports mapping table for the winding time is set; And the winding time measured value that obtains according to acquiring unit, report mapping table to obtain corresponding winding time report value according to the winding time;
Report the unit, be used for the winding time report value that reports the map unit mapping to obtain;
Wherein, being set the winding time reports the mode of mapping table to be:
A11, be defined as representing wide coverage, the required bit wide of winding time report value;
Bit wide and criterion and quantity precision that a12, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A13, the corresponding relation that step a12 is calculated write the winding time and report mapping table.
15. device according to claim 14 is characterized in that,
In a11, the required bit wide of described definite winding time report value is: determine winding time report value on the basis of standard bit wide, the bit of required increase;
In a12, the described calculating winding time measured value corresponding with each winding time report value is: the newly-increased winding time report value for increasing bit, calculate corresponding winding time measured value;
In a13, describedly the corresponding relation that calculates is write the winding time report mapping table to be: will increase bit and newly-increased winding time report value and the corresponding relation between the winding time measured value, and be added into the winding time to report in mapping table.
16. according to claim 14 or 15 described devices is characterized in that described device is positioned at the base station.
17. the device of a reporting round-trip time is characterized in that, this device comprises: acquiring unit, map unit and report the unit; Wherein,
Acquiring unit is used for obtaining the winding time measured value;
Map unit reports mapping table for the winding time is set; And the winding time measured value that obtains according to acquiring unit, report mapping table to obtain corresponding winding time report value according to the winding time;
Report the unit, be used for the winding time report value that reports the map unit mapping to obtain;
Wherein, being set the winding time reports mapping table to be:
A21, be defined as the quantified precision that represents that wide coverage is required;
Quantified precision and standard bit wide that a22, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A23, the corresponding relation that step a22 is calculated write the winding time and report mapping table.
18. the device of a reporting round-trip time is characterized in that, this device comprises: acquiring unit, map unit and report the unit; Wherein,
Acquiring unit is used for obtaining the winding time measured value;
Map unit reports mapping table for the winding time is set; And the winding time measured value that obtains according to acquiring unit, report mapping table to obtain corresponding winding time report value according to the winding time;
Report the unit, be used for the winding time report value that reports the map unit mapping to obtain;
Wherein, being set the winding time reports mapping table to be:
A31, be defined as representing quantified precision that wide coverage is required and the bit wide of winding time report value;
Quantified precision and bit wide that a32, basis are determined are calculated the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and winding time measured value;
A33, the corresponding relation that step a32 is calculated write the winding time and report mapping table.
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| CN 201110073493 CN102098724B (en) | 2005-10-28 | 2006-10-27 | Positioning method, and method and device for reporting loop time |
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| CNA2005101169836A CN1859746A (en) | 2005-10-28 | 2005-10-28 | Positioning method using return ring time under wide coverage |
| CN 201110073493 CN102098724B (en) | 2005-10-28 | 2006-10-27 | Positioning method, and method and device for reporting loop time |
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