CN1956594B - Positioning method, method of reporting round-trip time - Google Patents
Positioning method, method of reporting round-trip time Download PDFInfo
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- CN1956594B CN1956594B CN2006101498715A CN200610149871A CN1956594B CN 1956594 B CN1956594 B CN 1956594B CN 2006101498715 A CN2006101498715 A CN 2006101498715A CN 200610149871 A CN200610149871 A CN 200610149871A CN 1956594 B CN1956594 B CN 1956594B
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Abstract
This invention discloses a method for reporting round-trip time, which sets a round-trip time reporting mapping list based on wide covered local areas including: getting a round-trip time measurement value and getting corresponding round-trip time report value based on the preset mapping list to report the report value of said round-trip time. This invention also discloses a location method to realize the location to user devices under the wide cover, besides, this invention also discloses a device for reporting round-trip time.
Description
Technical field
The present invention relates to mobile communication technology, refer to the method and the device of a kind of localization method, reporting round-trip time especially.
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 measurement that RTT measured and initiated to UE transmitting-receiving time difference Rx-Tx to base station node B; 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 are that center, NodeB are a circumference of radius to the UE distance with NodeB, again according to the location of the determined cell range realization of CellID 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 the 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 deduct the transmitting-receiving time difference T that UE produces in position fixing process after obtaining the RTT measured value that NodeB reports
0, to realize more accurate localization.According to 3GPP agreement transmitting-receiving time difference Rx-Tx measurement result T
0Scope be 1024 ± 148chip, just 876～1172chip.
NodeB reports the process of RTT measured value to be to RNC in the prior art: 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 the 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, at first introduce the RTT message that is used to report the RTT report value.Wherein, RTT message is NodeB reports message from the RTT report value to RNC.In the RTT message, the attribute that is used to define 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 measured value that can represent of RTT report value.
The value of the RTT message attributes of using in the 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 quantified precision that the bit wide of using in the prior art is 15 bits, use is 1/16chip, therefore claims also that at this bit wide 15 bits are that standard bit wide, quantified precision 1/16chip are the standard quantified precision.
RTT shown in the 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 the RTT message, the scope of RTT report value is 0～2 in the table one
15-1 is 0～32767, and the RTT report value is arranged in first row of table one in the mode that increases progressively.Have corresponding relation between the RTT measured value of the 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 are employed fixed value when the RTT measured value is mapped to the RTT report value, and reality is exactly to be to receive and dispatch 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 standard quantified precision 1/16chip, then the mapping relations between RTT report value and the 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 the 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 the RTT report value can be represented in the table one:
0～((2
15-2)/16+876-T
080 kilometers of)/2 * 78.125 ≈ wherein suppose T
0Get 876chip.
Under wide the covering, as the coverage of sub-district greater than 80 kilometers situation under, though NodeB can measure the distance greater than 80 kilometers, but because the RTT measured value range that RTT report value maximum can be represented is approximately 80 kilometers, therefore far away as UE apart from NodeB, exceed 80 kilometers or farther the time, the RTT report value just can't accurately be represented the RTT measured value of NodeB measurement again, thereby also just can not accurately locate, influence the accuracy of location UE.
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 this method can make winding time report value, is adapted to the size of cell coverage area flexibly.
In addition, another main purpose of the present invention is to provide a kind of localization method, uses this method and can be implemented in location under the 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 the size of cell coverage area flexibly.
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.
The present invention simultaneously also provides a kind of localization method, according to wide coverage is set the winding time in advance and reports mapping table; This method may further comprise the 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.
Preferable, 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 standard quantified precision that a12, basis are determined calculate the winding time measured value corresponding with each winding time report value, obtain the corresponding relation between each winding time report value and the winding time measured value;
A13, the corresponding relation that step a12 is calculated write the winding time and report mapping table.
Preferable, among the 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;
Among the step a12, the described calculating winding time measured value corresponding with each winding time report value is: the newly-increased winding time report value at increasing bit, calculate corresponding winding time measured value;
Among the 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 the mapping table.
Preferable, among the step a11, the bit of described definite required increase is:
Calculate [log
2 Wd/Wb], obtain the bit that need increase, wherein W
dBe wide coverage, W
dBe the standard setting scope, [] is rounding operation.
Preferable, among the step a12, described calculating winding time measured value is:
Calculate (RTT respectively
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T is to 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 standard quantified precision, and T is the minimum transmitting-receiving time difference.
Preferable, describedly the winding time is set reports mapping table to be:
A21, be defined as the quantified precision of representing 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 the winding time measured value;
A23, the corresponding relation that step a22 is calculated write the winding time and report mapping table.
Preferable, among the step a21, described definite required quantified precision is:
Calculate [log
2 Wd/Wb], obtain the multiple of required reduction quantified precision; Calculate Step * 2 again
xObtain required quantified precision;
Wherein, Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
Preferable, describedly the winding time is set reports mapping table to be:
A31, be defined as representing the 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 the winding time measured value;
A33, the corresponding relation that step a32 is calculated write the winding time and report mapping table.
Preferable, among the step a31, described definite required quantified precision and bit wide is:
Calculate [log
2 Wd/Wb] bit that obtains increasing and the summation that reduces the multiple of quantified precision; Determine earlier the bit that increases, the bit that again summation the is deducted increase multiple of quantified precision that is reduced, calculate Step * 2
xThe quantified precision that obtains determining adds the bit wide that the standard bit wide obtains determining with the bit that increases; Or definite earlier multiple that reduces quantified precision, calculate Step * 2
xQuantified precision after being reduced deducts the bit that the multiple that reduces quantified precision obtains increasing according to summation again, and 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.
Preferable, the winding time measured value of described calculating winding time report value correspondence is:
Calculate (RTT respectively
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T is to 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 the mapping table, Step is for reducing the back quantified precision, 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 to obtain the winding time measured value;
Map unit is used to be provided with the winding time to report mapping table; 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 to the winding time report value that reports the map unit mapping to obtain.
Preferable, described device is positioned at the base station.
The method of a kind of reporting round-trip time provided by the present invention is provided with the winding time according to cell coverage area and reports mapping table; The winding time according to setting reports mapping table, the reporting round-trip time report value.In the present invention, owing to be that coverage according to the sub-district is provided with the winding time and reports mapping table, the therefore winding time report value that reports the mapping table mapping to obtain by the winding time can be represented the coverage of described sub-district.Simultaneously, the present invention also provides a kind of localization method, and this localization method is provided with 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 the wide covering.In addition, the present invention also provides a kind of device of reporting round-trip time.
Description of drawings
Fig. 1 is the embodiment of the invention realizes the location under wide covering a the flow chart;
Fig. 2 is the structure chart of the device of embodiment of the 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, the winding time according to setting reports mapping table, and 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, what mainly introduce is: the method for reporting round-trip time provided by the invention is applied to the wide situation of the location of user terminal down that covers.Certainly, the method for reporting round-trip time provided by the invention is not limited in the scene that user terminal is located under the wide covering.
Corresponding relation between time measured value of winding described in the present invention and the winding time report value is stored in the winding time and reports in the mapping table.When utilizing the location of reporting round-trip time method of the present invention under extensively covering, at first is set the winding time and reports mapping table according to wide coverage; NodeB measures the winding time then, and reporting mapping table that this winding time measured value is mapped to corresponding winding time report value according to the winding time that is provided with, the winding time measured value of the winding time report value correspondence of positioning equipment after according to mapping and the transmitting-receiving time difference that the user measures position user terminal.
The present invention realizes that the positioning equipment that the user is positioned is not limited only to the RNC or the centre of location, and specifically the method that 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 technical scheme of the present invention is described in more detail by positioning flow shown in Figure 1.Concrete steps among Fig. 1 are as follows:
Step 101:, RTT is set reports mapping table according to the scope of wide covering.
In the present invention, can revise in the RTT message according to the scope of wide covering and be used to represent the attribute of RTT report value, and then according to amended attribute RTT is set and report mapping table.Here, the method for revising the attribute that is used to represent RTT message value in the RTT message comprises: increase and be used to represent RTT report value bit wide, promptly increase bit in the standard bit wide; Or reduction RTT measured value quantified precision; Or increase RTT report value bit wide simultaneously and reduce RTT measured value quantified precision.
When RTT report value bit wide is that 15 bits, RTT measured value quantified precision are under the situation of 1/16chip, calculating through the front, it is 80 kilometers that RTT reports the orientation range that the RTT measured value can be represented in the mapping table, 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, RTT measured value institute can positioning range all can double accordingly.For example, if RTT report value bit wide is increased by 1 bit, the bit wide after then increasing is 16 bits, according to ((2
16-2)/16+876-T
0160 kilometers of)/2 * 78.125 ≈, wherein T
0Get 876chip, RTT reports in the mapping table RTT measured value can represent 160 kilometers scope; Moreover if RTT measured value quantified precision is reduced by 1 times, the quantified precision after then reducing is 1/8chip, according to ((2
15-2)/8+876-T
0)/2 * 78.125 ≈ 160 wherein supposes T
0=876chip, RTT measured value also can represent 160 kilometers scope, then 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, then show as on the basis of former quantification precision and multiply by 4, be i.e. 1/16chip * 4=1/4chip; Promptly reducing the multiple of quantified precision and the pass between the quantified precision after the 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 the scope and the calculating formula [log of wide covering
2 Wd/Wb] value that obtains, determine to revise the mode of 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 then 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 then 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 then increasing is 17 bits, or reduce by 2 times of RTT measured value quantified precisions, RTT measured value quantified precision after then reducing is 1/4chip, perhaps can also increase RTT report value bit wide simultaneously is that 16 bits and reduction RTT measured value quantified precision are 1/8chip, specifically selects which kind of alter mode to determine according to the actual motion environment of network and the performance of network.
If increase the bit wide of RTT report value, then 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 newly-increased RTT report value and corresponding RTT measured value are added RTT report mapping table, 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 standard quantified precision.For example, be under the situation of 16 bits increasing RTT report value bit wide, then needing to report newly-increased RTT report value in the 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, then its pairing RTT measured value then is 4971.8125≤RTT
M＜4971.8750, RTT wherein
MWhat represent is the RTT measured value.According to calculating the result, be added into table one according to the corresponding relation between RTT report value and the RTT measured value, the RTT that then 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 the bit wide of RTT report value is increased to 17 bits even higher, 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, then relative set RTT report mapping table method can for, recomputate RTT and report all RTT report values pairing RTT measured value under the quantified precision after the reduction in the mapping table, and the result of the RTT measured value that calculates filled out after corresponding RTT report value, Calculation Method 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 pairing RTT measured values are: 876.1250≤RTT
M＜876.2500.The method that RTT reports mapping table is set obtains reporting mapping table according to reducing quantified precision according to above-mentioned as the RTT of table three.
| 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, then relative set RTT reports the method for mapping table to be, at first definite newly-increased RTT report value according to the bit wide that increases, and then, utilize formula (RTT according to the quantified precision after reducing
R-1) * Step+876≤RTT
M＜RTT
R* Step+876, wherein RTT
MFor RTT measured value, Step are the RTT measured value quantified precision after the reduction, calculate corresponding RTT measured value at each RTT report value, 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 measure R x-Tx and sends the request message of measure R TT to NodeB to UE.
Step 103:NodeB reports mapping table according to the RTT that is provided with after finishing 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 carries out the measurement of Rx-Tx and measurement result is reported RNC also according to the method for prior art measure R x-Tx simultaneously.
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 is provided with and obtains corresponding RTT measured value, finishes 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 to obtain the winding time measured value; Map unit 22, the winding time that is used to be provided with 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 to 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 is provided with 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 is provided among the inventive method embodiment.
Aforesaid device can be positioned at the base station.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. the method for a reporting round-trip time is characterized in that, comprising:
A11, be defined as representing the bit wide of the winding time report value that the scope of wide coverage cell is required;
A12, quantize accuracy computation winding time measured value and obtain between the two corresponding relation according to described winding time report value and described winding time measured value according to described bit wide and standard;
A13, report mapping table according to the described correspondence setting winding time, carry out following steps:
Obtain winding time actual measured value, and report mapping table according to the described winding time, mapping obtains corresponding winding time actual report value, reports described winding time actual report value.
2. method according to claim 1 is characterized in that,
Among the step a11, describedly determine that the bit wide of required winding time report value is: determine winding time report value on the basis of standard bit wide, the bit of required increase;
Among the step a12, described calculating winding time measured value is: the newly-increased winding time report value at increasing bit, calculate corresponding winding time measured value;
Among the step a13, describedly the winding time is set reports 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 the mapping table.
3. method according to claim 2 is characterized in that, among the 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. method according to claim 3 is characterized in that, among the step a12, described calculating winding time measured value is:
Calculate (RTT respectively
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T is to 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 standard quantified precision, and T is the minimum transmitting-receiving time difference.
5. the method for a reporting round-trip time is characterized in that, comprising:
A21, be defined as the quantified precision of representing 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 the winding time measured value; A23, the corresponding relation that step a22 is calculated write the winding time and report mapping table, carry out following steps:
Obtain winding time actual measured value, and report mapping table according to the described winding time, mapping obtains corresponding winding time actual report value, reports described winding time actual report value.
6. method according to claim 5 is characterized in that, among the step a21, described definite required quantified precision is:
Calculate
Obtain the multiple of required reduction quantified precision; Calculate Step * 2 again
xObtain required quantified precision;
Wherein, Step is the quantified precision before reducing, and x is for reducing the multiple of quantified precision.
7. according to claim 5 or 6 described methods, it is characterized in that the winding time measured value of described calculating winding time report value correspondence is:
Calculate (RTT respectively
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T is to 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 the mapping table, Step is for reducing the back quantified precision, and T is the minimum transmitting-receiving time difference.
8. the method for a reporting round-trip time is characterized in that, comprising::
A31, be defined as representing the 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 the winding time measured value; A33, the corresponding relation that step a32 is calculated write the winding time and report mapping table, carry out following steps:
Obtain winding time actual measured value, and report mapping table according to the described winding time, mapping obtains corresponding winding time actual report value, reports described winding time actual report value.
9. method according to claim 8 is characterized in that, among the step a31, described definite required quantified precision and bit wide is:
Calculate
The summation of the multiple of bit that obtains increasing and reduction quantified precision; Determine earlier the bit that increases, the bit that again summation the is deducted increase multiple of quantified precision that is reduced, calculate Step * 2
xThe quantified precision that obtains determining adds the bit wide that the standard bit wide obtains determining with the bit that increases; Or definite earlier multiple that reduces quantified precision, calculate Step * 2
xQuantified precision after being reduced deducts the bit that the multiple that reduces quantified precision obtains increasing according to summation again, and 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.
10. according to Claim 8 or 9 described methods, it is characterized in that the winding time measured value of described calculating winding time report value correspondence is:
Calculate (RTT respectively
R-1) * Step+T and RTT
R* Step+T is more than or equal to (RTT
R-1) * Step+T is to 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 the mapping table, Step is for reducing the back quantified precision, and T is the minimum transmitting-receiving time difference.
11. a localization method that utilizes any described reporting round-trip time method of claim 1-10 is characterized in that, according to wide coverage is set the winding time in advance and reports mapping table; This method may further comprise the 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.
12. method according to claim 11 is characterized in that, described to user terminal position into:
The base station maps that obtains positioning equipment arrive 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.
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| CN2006101498715A CN1956594B (en) | 2005-10-28 | 2006-10-27 | Positioning method, method of reporting round-trip time |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101169836A CN1859746A (en) | 2005-10-28 | 2005-10-28 | Positioning method using return ring time under wide coverage |
| CN200510116983.6 | 2005-10-28 | ||
| CN2006101498715A CN1956594B (en) | 2005-10-28 | 2006-10-27 | Positioning method, method of reporting round-trip time |
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| CN 201110073493 Division CN102098724B (en) | 2005-10-28 | 2006-10-27 | Positioning method, and method and device for reporting loop time |
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| CN1956594B true CN1956594B (en) | 2011-05-04 |
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| US6434118B1 (en) * | 1999-01-11 | 2002-08-13 | 3Com Corporation | Method for determining round trip time utilizing ATM traffic management mechanism |
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| US6434118B1 (en) * | 1999-01-11 | 2002-08-13 | 3Com Corporation | Method for determining round trip time utilizing ATM traffic management mechanism |
| CN1444833A (en) * | 2000-05-15 | 2003-09-24 | 诺基亚公司 | Method to calculate true round trip propagation delay and user equipment location in WCDMA/UTRAN |
| CN1536850A (en) * | 2003-04-09 | 2004-10-13 | 深圳市中兴通讯股份有限公司南京分公 | Moving location method based on residential quarter mark and loopback time |
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