CN1968202A - Transmission method against physical random access channel transmission delay - Google Patents
Transmission method against physical random access channel transmission delay Download PDFInfo
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- CN1968202A CN1968202A CN 200610091872 CN200610091872A CN1968202A CN 1968202 A CN1968202 A CN 1968202A CN 200610091872 CN200610091872 CN 200610091872 CN 200610091872 A CN200610091872 A CN 200610091872A CN 1968202 A CN1968202 A CN 1968202A
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Abstract
The invention relates to a transmission method of physical random access channel transmission time delay, wherein it comprises that: a, in base station, segmented setting quantized unit of transmission time delay, while the value of quantized unit is increased along with increased distance; b, base station converts the measured time delay value to the transmission time delay report value via the quantized unit, writes the report value into frame protocol pack, to be sent to the wireless network controller; c, wireless network controller obtains and stores the report value; d, wireless network controller sends report value to base station; e, base station obtains the report value, to recover the real transmission time delay. The inventive method can apply wide cover condition whose radius is over 60km, without changing the bit width of transmission time delay in FP pack.
Description
Technical field
The present invention relates to the radio network technique of the communications field, relate in particular to a kind of transmission method of Physical Random Access Channel propagation delay time.
Background technology
In Wideband Code Division Multiple Access (WCDMA) (WCDMA) frequency division multiplexing (FDD) pattern, one way propagation delay time (the Transport propogation of air interface, Tp, perhaps Propagation Delay) (Physical random access channel PRACH) calculates by the access channel of physics at random among the Node B.At 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) in 25.133 agreements, the certainty of measurement of stipulating physics access channel propagation delay time at random for+/-2chips, quantization unit is 3chips, scope is 0～765chips.
(Frame Protocol, FP) packet form report radio network controller (RNC) with the propagation delay time Tp value of reporting to Node B by Frame Protocol.In 25.435 agreements, the FP packet format of regulation PRACH channel as can be known, the propagation delay time bit wide is 8bits, the scope of the TP value of reporting is 0～255.When setting up dedicated channel, RNC can be as required, propagation delay time Tp value of reporting that physics access channel is at random reported is handed down to Node B, be used to dispose corresponding dedicated channel, when but if dedicated channel is set up, RNC does not dispose propagation delay time (for example soft changing state), and then dedicated channel works in no propagation delay time pattern.
But existing because Node B is in reporting the FP bag of RNC, and the span of the Tp value of reporting is 0～255, and quantization unit is 3chips, and corresponding largest cell covering radius can only be 60 kilometers.Under wide coverage condition, radius of society fully may be greater than 60 kilometers, reach up to a hundred kilometers even 200 kilometers, at this moment, if quantization unit is 3chips, Tp value of reporting of 8bits bit wide can not be represented the air interface one-way only propagation time delay of (greater than 60 kilometers) at a distance, the actual transmissions time delay of its Physical Random Access Channel may be far longer than 765chips, for example at 120 kilometers places, (120*1000/78.125 1chip=78.125 rice)=1536chips, value after this moment, actual propagation delay time quantized with 3chips is 512 (1536/3), can not represent with 8bits (oxFF=255), therefore the scope maximum 255 that has promptly exceeded the Tp value of reporting has limited practical application.
Summary of the invention
The objective of the invention is to, a kind of transmission method of Physical Random Access Channel propagation delay time is provided, in not changing FP bag under the situation of propagation delay time bit wide, be suitable for radius of society greater than 60 kilometers wide covering scene.
The transmission method of Physical Random Access Channel propagation delay time of the present invention can comprise the following steps:
Steps A. segmentation is provided with the quantization unit of propagation delay time in the base station, and the numerical value of quantization unit increases along with the increase of distance;
Step B. base station is converted to the propagation delay time value of reporting with the propagation delay time measured value according to the quantization unit that disposes in the steps A, described propagation delay time value of reporting is write the Frame Protocol bag, and send to radio network controller;
Step C. radio network controller obtains, preserves described propagation delay time value of reporting;
Step D. radio network controller issues described propagation delay time value of reporting to described base station;
Step e. the base station obtains described propagation delay time value of reporting, and recovers to obtain actual propagation delay time according to quantization unit described in the base station.
Wherein, the quantization unit of configuration propagation delay time can be 3chips in 15 kilometer range in the described steps A.
Wherein, described propagation delay time bit wide is 8 bits.
Wherein, in the steps A described quantization unit can be set according to the cell coverage area of reality.
The quantization unit setting up procedure of propagation delay time described in the steps A comprises the following steps:
Cell coverage area according to reality obtains corresponding propagation delay time maximum;
Arrive in the peaked scope of described propagation delay time zero, can increase the quantization unit that segmentation is provided with described propagation delay time measured value along with the increase of distance.
Wherein, described segmentation setting can be the segmentation setting of equidistant or non-equidistance.
The quantization unit of described segmentation can be a kind of or combination in arithmetic progression, the Geometric Sequence.
The invention has the beneficial effects as follows: according to the transmission method of Physical Random Access Channel propagation delay time of the present invention, the quantization unit of Tp measured value is set by segmentation, in keeping the FP bag under the constant situation of propagation delay time bit wide, keep the quantization unit of section Tp measured value closely constant, suitable radius of society is the wide covering application scenarios more than 60 kilometers.
Description of drawings
Fig. 1 is the transmission method flow chart of Physical Random Access Channel propagation delay time of the present invention.
Embodiment
Describe the transmission method of Physical Random Access Channel propagation delay time of the present invention in detail below in conjunction with accompanying drawing.
In 3GPP 25.133 agreements, the scope that has defined Tp value of reporting that Node B reports is 0～255, quantization unit is 3chips, the present invention is that the Tp value of reporting bit wide is constant in keeping the FP bag, and the quantization unit of the propagation delay time of maintenance short range is constant, along with the increase of distance, increases the numerical value of quantization unit, by segmentation the quantization unit of Tp measured value is set, satisfies the application scenarios under wide the covering.
Define as shown in table 1ly, be that the Tp measured value quantizes form, wherein: the 1st classifies the value of reporting of propagation delay time as, and the 2nd classifies the measured value of propagation delay time as.
| The value of reporting | Measured value | Unit |
| Propagation delay time _ 000 | 0≤PRACH/PCPCH channel transmission time delay＜3 | chip |
| Propagation delay time _ 001 | 3≤PRACH/PCPCH channel transmission time delay＜6 | chip |
| Propagation delay time _ 002 | 6≤PRACH/PCPCH channel transmission time delay＜9 | chip |
| … | … | … |
| Propagation delay time _ 061 | 183≤PRACH/PCPCH channel transmission time delay＜186 | chip |
| Propagation delay time _ 062 | 186≤PRACH/PCPCH channel transmission time delay＜189 | chip |
| Propagation delay time _ 063 | 189≤PRACH/PCPCH channel transmission time delay＜192 | chip |
| Propagation delay time _ 064 | 192≤PRACH/PCPCH channel transmission time delay＜198 | chip |
| Propagation delay time _ 065 | 198≤PRACH/PCPCH channel transmission time delay＜204 | chip |
| Propagation delay time _ 066 | 204≤PRACH/PCPCH channel transmission time delay＜210 | chip |
| … | … | … |
| Propagation delay time _ 125 | 558≤PRACH/PCPCH channel transmission time delay＜564 | chip |
| Propagation delay time _ 126 | 564≤PRACH/PCPCH channel transmission time delay＜570 | chip |
| Propagation delay time _ 127 | 570≤PRACH/PCPCH channel transmission time delay＜576 | chip |
| Propagation delay time _ 128 | 576≤PRACH/PCPCH channel transmission time delay＜588 | chip |
| Propagation delay time _ 129 | 588≤PRACH/PCPCH channel transmission time delay＜600 | chip |
| Propagation delay time _ 130 | 600≤PRACH/PCPCH channel transmission time delay＜612 | chip |
| … | … | … |
| Propagation delay time _ 189 | 1308≤PRACH/PCPCH channel transmission time delay＜1320 | chip |
| Propagation delay time _ 190 | 1320≤PRACH/PCPCH channel transmission time delay＜1332 | chip |
| Propagation delay time _ 191 | 1332≤PRACH/PCPCH channel transmission time delay＜1344 | chip |
| Propagation delay time _ 192 | 1344≤PRACH/PCPCH channel transmission time delay＜1366 | chip |
| Propagation delay time _ 193 | 1366≤PRACH/PCPCH channel transmission time delay＜1390 | chip |
| Propagation delay time _ 194 | 1390≤PRACH/PCPCH channel transmission time delay＜1414 | chip |
| … | … | … |
| Propagation delay time _ 252 | 2784≤PRACH/PCPCH channel transmission time delay＜2808 | chip |
| Propagation delay time _ 253 | 2808≤PRACH/PCPCH channel transmission time delay＜2832 | chip |
| Propagation delay time _ 254 | 2832≤PRACH/PCPCH channel transmission time delay＜2856 | chip |
| Propagation delay time _ 255 | 2856≤PRACH/PCPCH channel transmission time delay | chip |
Table 1
As shown in table 1, the docking port data are made amendment: keep data length constant, and quantization unit is carried out the segmentation setting according to the size of the Tp value of reporting, correspondingly, the Tp measured value is divided for 4 sections: Tp value of reporting of the 1st section is 0～63, and quantization unit is 3chips; Tp value of reporting of the 2nd section is 64～127, and quantization unit is 6chips; Tp value of reporting of the 3rd section is 128～191, and quantization unit is 12chips, and Tp value of reporting of the 4th section is 192～255, and quantization unit is 24chips.
Through after such processing, the largest cell radius that the Tp measured value of the Tp value of reporting 255 correspondences can be suitable for reaches 2856chips, and correspondence is about 223 kilometer (2856 * 78.125=223125).
The above-mentioned transmission method of only describing Physical Random Access Channel propagation delay time of the present invention in detail with an example, but the present invention is not limited to the Tp value of reporting is divided into 4 sections, in addition, the size of the quantization unit of the number range of each segmentation and each segmentation all is not limited to the foregoing description.
For example, as shown in table 2, be example still the Tp value of reporting is divided into 4 sections, can be set to by quantization unit: the 1st section is 0～63, quantization unit is 3chips; The 2nd section is 64～127, and quantization unit is 6chips; The 3rd section is 128～191, and quantization unit is 9chips; The 4th section is 192～255, and quantization unit is 12chips.
| The value of reporting | Measured value | Unit |
| Propagation delay time _ 000 | 0≤PRACH/PCPCH channel transmission time delay＜3 | chip |
| Propagation delay time _ 001 | 3≤PRACH/PCPCH channel transmission time delay＜6 | chip |
| Propagation delay time _ 002 | 6≤PRACH/PCPCH channel transmission time delay＜9 | chip |
| … | … | … |
| Propagation delay time _ 061 | 183≤PRACH/PCPCH channel transmission time delay＜186 | chip |
| Propagation delay time _ 062 | 186≤PRACH/PCPCH channel transmission time delay＜189 | chip |
| Propagation delay time _ 063 | 189≤PRACH/PCPCH channel transmission time delay＜192 | chip |
| Propagation delay time _ 064 | 192≤PRACH/PCPCH channel transmission time delay＜198 | chip |
| Propagation delay time _ 065 | 198≤PRACH/PCPCH channel transmission time delay＜204 | chip |
| Propagation delay time _ 066 | 204≤PRACH/PCPCH channel transmission time delay＜210 | chip |
| … | … | … |
| Propagation delay time _ 125 | 558≤PRACH/PCPCH channel transmission time delay＜564 | chip |
| Propagation delay time _ 126 | 564≤PRACH/PCPCH channel transmission time delay＜570 | chip |
| Propagation delay time _ 127 | 570≤PRACH/PCPCH channel transmission time delay＜576 | chip |
| Propagation delay time _ 128 | 576≤PRACH/PCPCH channel transmission time delay＜585 | chip |
| Propagation delay time _ 129 | 585≤PRACH/PCPCH channel transmission time delay＜594 | chip |
| Propagation delay time _ 130 | 594≤PRACH/PCPCH channel transmission time delay＜603 | chip |
| … | … | … |
| Propagation delay time _ 189 | 1125≤PRACH/PCPCH channel transmission time delay＜1134 | chip |
| Propagation delay time _ 190 | 1134≤PRACH/PCPCH channel transmission time delay＜1143 | chip |
| Propagation delay time _ 191 | 1143≤PRACH/PCPCH channel transmission time delay＜1152 | chip |
| Propagation delay time _ 192 | 1152≤PRACH/PCPCH channel transmission time delay＜1164 | chip |
| Propagation delay time _ 193 | 1164≤PRACH/PCPCH channel transmission time delay＜1176 | chip |
| Propagation delay time _ 194 | 1176≤PRACH/PCPCH channel transmission time delay＜1188 | chip |
| … | … | … |
| Propagation delay time _ 252 | 1872≤PRACH/PCPCH channel transmission time delay＜1884 | chip |
| Propagation delay time _ 253 | 1884≤PRACH/PCPCH channel transmission time delay＜1896 | chip |
| Propagation delay time _ 254 | 1896≤PRACH/PCPCH channel transmission time delay＜1908 | chip |
| Propagation delay time _ 255 | 1908≤PRACH/PCPCH channel transmission time delay | chip |
Table 2
Through after such processing, the largest cell radius that Tp value of reporting 255 can be suitable for reaches 1908chips, and correspondence is about 149 kilometer (1908 * 78.125=149).
Below, consult Fig. 1, describe the transmission method of Physical Random Access Channel propagation delay time of the present invention in detail.
Under the situation of propagation delay time bit wide, the transmission method of Physical Random Access Channel propagation delay time under the wide covering of the present invention may further comprise the steps in not changing existing FP bag:
Step 1) in advance in Node B segmentation the quantization unit of propagation delay time is set, the numerical value of quantization unit increases along with the increase of distance;
Step 2) Node B is converted to the Tp value of reporting with the Tp measured value according to the quantization unit that disposes in the step 1), this Tp value of reporting is write FP, and send to RNC;
Step 3) RNC obtains and preserves this Tp value of reporting from the FP bag that Node B sends;
Step 4) is when setting up dedicated channel, and RNC issues this Tp value of reporting to Node B;
Dedicated channel module among the step 5) Node B is obtained this Tp value of reporting, and recovers to obtain actual propagation delay time according to current quantization unit of the present invention, and according to the propagation delay time configure dedicated channel of reality.
Below in conjunction with table 1, the transmission method application in practice of Physical Random Access Channel propagation delay time of the present invention is described with a concrete example:
At first, Node B does not change existing FP packet format, and the Tp measured value in current 1320～1332chips scope is mapped as Tp value of reporting 190 according to table 1, Tp value of reporting 190 is write in the FP bag, and FP wrapped offer RNC.This moment, quantization unit was 12chips for Node B, and the actual propagation delay time that records is mapped as 1320～1332chips.
Secondly, RNC obtains and preserves this Tp value of reporting (190) in the FP bag from the FP bag.At this moment, if RNC should be 570～573chips according to the propagation delay time of quantization unit (existing quantization unit the is 3chips) mapping of himself.
Once more, when setting up dedicated channel for described Node B, Tp value of reporting that RNC searches this NodeB that preserves in self is 190, issues this Tp value of reporting 190 to Node B.
At last, dedicated channel module among the Node B is obtained this Tp value of reporting that RNC issues, quantization unit form mapping according to table 1, reverting to actual propagation delay time is 1320～1332chips, correspondence is about 103 kilometers, and according to propagation delay time 1320～1332chips configure dedicated channel of reality.
Thereby realized UE reporting and issuing apart from the Tp measured value of 103 kilometers of base stations.
Transmission method according to Physical Random Access Channel propagation delay time of the present invention, in keeping the FP bag under the constant prerequisite of Tp bit wide, the quantization unit of the propagation delay time of maintenance short range is constant, increase along with distance, increase the numerical value of quantization unit, thereby by segmentation the quantization unit of Tp measured value is set, satisfies the application scenarios under wide the covering; Because the Tp bit wide is constant in the maintenance FP bag, closely the quantization unit of the Tp measured value of (corresponding the 1st section Tp measured value, radius of society is about 15 kilometers) remains unchanged, and does not therefore influence dedicated channel search window performance; And use for Node B because RNC just can select to issue Tp value of reporting of receiving when dedicated channel is set up, and Node B self knows the quantization unit mapping ruler of Tp measured value, therefore this change does not influence the butt joint of Node B and other RNC.
More than, the present invention only with equidistant segmentation as preferable segmented mode, and the quantization unit of segmentation is arithmetic progression or Geometric Sequence, but, the present invention is not limited thereto, can also carry out segment processing in non-equidistance ground, the different quantization unit of corresponding each section, hour quantization unit is less for general Tp measured value, quantization unit was bigger when the Tp measured value was big, but arbitrarily setting also can realize the present invention, as long as quantization unit is little when satisfying short range, the principle that quantization unit is big during far range gets final product.
The quantization unit of Tp measured value can be set according to the cell coverage area of reality in addition.
Concrete, comprise the following steps:
Obtain the maximum of corresponding Tp value according to the cell coverage area of reality;
According to the maximum of this Tp value, segmentation is provided with the quantization unit of Tp measured value.Concrete segmentation setting up procedure along with the increase of distance, increases the numerical value of quantization unit as previously mentioned, and segmentation is provided with the quantization unit of Tp measured value, and the present invention is not described in detail.
For example, actual cell coverage area is 180 kilometers, and at this moment, the maximum of corresponding Tp value is 2304chips, and segmentation is provided with the quantization unit of Tp measured value to 0～2304chips.
In sum, transmission method according to Physical Random Access Channel propagation delay time of the present invention, the quantization unit of Tp measured value is set by segmentation, guarantee that the Tp bit wide is constant in the FP bag, and keep short range (corresponding the 1st section Tp measured value, the quantization unit of the Tp measured value about 15km of radius of society) is constant, in the covering scene of the existing sub-district of compatibility, has realized that suitable radius of society is the wide covering scene more than 60 kilometers.
More than describing is to make things convenient for those of ordinary skills to understand the present invention; to the detailed description that the present invention carried out; but can expect; in the scope that does not break away from claim of the present invention and contained, can also make other variation and modification, these variations and revising all in protection scope of the present invention.
Claims (7)
1. the transmission method of a Physical Random Access Channel propagation delay time is characterized in that, comprises the following steps:
Steps A. segmentation is provided with the quantization unit of propagation delay time in the base station, and the numerical value of quantization unit increases along with the increase of distance;
Step B. base station is converted to the propagation delay time value of reporting with the propagation delay time measured value according to the quantization unit that disposes in the steps A, described propagation delay time value of reporting is write the Frame Protocol bag, and send to radio network controller;
Step C. radio network controller obtains, preserves described propagation delay time value of reporting;
Step D. radio network controller issues described propagation delay time value of reporting to described base station;
Step e. the base station obtains described propagation delay time value of reporting, and recovers to obtain actual propagation delay time according to quantization unit described in the base station.
2. the transmission method of Physical Random Access Channel propagation delay time as claimed in claim 1 is characterized in that, the quantization unit of configuration propagation delay time is 3chips in 15 kilometer range in the described steps A.
3. the transmission method of Physical Random Access Channel propagation delay time as claimed in claim 1 is characterized in that, described propagation delay time bit wide is 8 bits.
4. the transmission method of Physical Random Access Channel propagation delay time as claimed in claim 1 is characterized in that, the cell coverage area according to reality in the steps A is provided with described quantization unit.
5. the transmission method of Physical Random Access Channel propagation delay time as claimed in claim 4 is characterized in that, the quantization unit setting up procedure of propagation delay time described in the steps A comprises the following steps:
Cell coverage area according to reality obtains corresponding propagation delay time maximum;
Arrive in the peaked scope of described propagation delay time zero, increase the quantization unit that segmentation is provided with described propagation delay time measured value along with the increase of distance.
6. as the transmission method of claim 1 or 4 or 5 described Physical Random Access Channel propagation delay times, it is characterized in that described segmentation is set to equidistantly or the segmentation setting of non-equidistance.
7. the transmission method of Physical Random Access Channel propagation delay time as claimed in claim 6 is characterized in that, the quantization unit of described segmentation is a kind of or combination in arithmetic progression, the Geometric Sequence.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378279B (en) * | 2007-08-28 | 2012-07-04 | 中兴通讯股份有限公司 | Method and apparatus for obtaining propagation delay from physical stochastic access channel |
| WO2013185674A1 (en) * | 2012-07-23 | 2013-12-19 | 中兴通讯股份有限公司 | Random access method and receiver |
| CN103561423A (en) * | 2013-10-16 | 2014-02-05 | 上海华为技术有限公司 | TP reporting method and device and TP application method and device |
| CN106105049A (en) * | 2014-05-07 | 2016-11-09 | 华为技术有限公司 | Propagation delay time processing method and device thereof and equipment |
-
2006
- 2006-06-13 CN CN 200610091872 patent/CN100505695C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378279B (en) * | 2007-08-28 | 2012-07-04 | 中兴通讯股份有限公司 | Method and apparatus for obtaining propagation delay from physical stochastic access channel |
| WO2013185674A1 (en) * | 2012-07-23 | 2013-12-19 | 中兴通讯股份有限公司 | Random access method and receiver |
| CN103582151A (en) * | 2012-07-23 | 2014-02-12 | 中兴通讯股份有限公司 | Random access method and receiver |
| US9426829B2 (en) | 2012-07-23 | 2016-08-23 | Zte Corporation | Random access method and receiver |
| CN103561423A (en) * | 2013-10-16 | 2014-02-05 | 上海华为技术有限公司 | TP reporting method and device and TP application method and device |
| CN106105049A (en) * | 2014-05-07 | 2016-11-09 | 华为技术有限公司 | Propagation delay time processing method and device thereof and equipment |
| CN106105049B (en) * | 2014-05-07 | 2019-08-27 | 华为技术有限公司 | Propagation delay time processing method and its device and equipment |
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