CN101022309B - Wideband time division duplexing system up-link signal transmitting method - Google Patents
Wideband time division duplexing system up-link signal transmitting method Download PDFInfo
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Abstract
A method for sending up-link signal of wideband time division duplex system includes confirming up-link time slot and partial integer sample point length of each symbol data as well as symbol sum as per standard requirement and sampling rate, confirming partial integer sample point length of selectable circulation prefix and its corresponding parameter set of up-link time slot interval integer sample point length based on certain condition, sending a numbers of symbol and one up-link time slot interval on up-link time slot in sequence and setting said sample point length to be the same under different system bandwidth.
Description
Technical field
The present invention relates to field of mobile communication, be specifically related to a kind of wideband time division duplexing system up-link signal transmitting method.
Background technology
In the TDD communication system, the shortest time up or that down link continues is called a time slot.Time slot generally includes two parts: several send symbol and a slot time that does not send data of data.Comprise the information that system need send in the symbol; then do not send any data in the slot time; its main effect is the protection that is used for the uplink downlink conversion; the descending time slot gap size of down link also can influence the coverage of sub-district; usually; descending time slot is big more at interval, and the coverage of sub-district is also just big more.
But, in the wide-band TDD communication system, the frequency selective fading highly significant of channel, in order to reduce the frequency selective fading influence, symbol in the time slot all is the symbol that has Cyclic Prefix, this Cyclic Prefix not only can be avoided the interference between time slot, can also avoid the interference between the time slot internal symbol.And when the symbol in the time slot was the orthogonal frequency division multiplex OFDM symbol, Cyclic Prefix also had the effect that keeps the carrier wave orthogonality under frequency-selective channel.
As shown in Figure 1, provided a kind of schematic diagram that under Normal cyclic prefix situation, sends the wideband uplink signal of the structure of time slot based on TD-SCDMA long evolving system LTE, here establishing sample frequency is 30.72MHz, the duration=1/30.72MHz of a sampling point.In this schematic diagram, 0.675ms is a time slot, and this time slot comprises 10 symbol and ascending time slot intervals of sending data.Each symbol comprises two parts again: data division and Cyclic Prefix part.If these 10 symbols are respectively: symbol 0, symbol 1...... symbol 9.According to 3GPP TS 36.211 V0.4.2, when the available subcarrier number of system bandwidth was less than or equal to 300, the Cyclic Prefix of symbol 0 was 320 sampling points; And the Cyclic Prefix of symbol 1-9 is 192 sampling points; Deduct this 10 symbols, a time slot backmost be the ascending time slot compartment, the duration of this part is equivalent to 256 sampling points.And when the available subcarrier number of system bandwidth during greater than 300, the Cyclic Prefix of symbol 0 is 224 sampling points, and the Cyclic Prefix of symbol 1-9 is 204 sampling points; Deduct this 10 symbols, a time slot backmost be the ascending time slot compartment, the duration of this part is equivalent to 244 sampling points.This situation is applicable to the environment that channel delay expansion is less, as the unicast service environment etc.
As shown in Figure 2, provided the schematic diagram that under Extend cyclic prefix situation send wideband uplink signal of another kind based on the structure of time slot of TD-SCDMA long evolving system LTE, here establishing sample frequency is 30.72MHz, the duration=1/30.72MHz of a sampling point.In this schematic diagram, 0.675ms is a time slot, and this time slot comprises 9 symbol and ascending time slot intervals of sending data.Each symbol comprises two parts again: data division and Cyclic Prefix part.If these 9 symbols are respectively: symbol 0, symbol 1...... symbol 8.According to 3GPP TS 36.211 V0.4.2, when the available subcarrier number of system bandwidth was less than or equal to 300, the Cyclic Prefix of symbol 0 was 560 sampling points, and the Cyclic Prefix of symbol 1-8 is 423 sampling points; Deduct this 9 symbols, a time slot backmost be the ascending time slot compartment, the duration of this part is equivalent to 408 sampling points; And when the available subcarrier number of system bandwidth during greater than 300, the Cyclic Prefix of symbol 0 is 472 sampling points, and the Cyclic Prefix of symbol 1-8 is 456 sampling points; Deduct this 9 symbols, a time slot backmost be the ascending time slot compartment, the duration of this part is equivalent to 232 sampling points.This situation is applicable to the environment that channel delay expansion is bigger, as the multicast service environment etc.
Terminal sends signal according to mode noted earlier and has following defective:
1. different at interval with the descending time slot of descending time slot, the main effect at interval of the ascending time slot of ascending time slot is the protection that is used for the uplink downlink conversion.The available subcarrier number of this effect and system bandwidth, the channel circumstance of terminal is irrelevant.And according to present this sending method, terminal need support four kinds of ascending time slots at interval, and this can increase the implementation complexity of terminal and not bring any gain.
2. as previously mentioned; the main effect at interval of the ascending time slot of ascending time slot be on-protection of down link conversion; and the main effect at interval of the descending time slot of descending time slot is except the protection of following-up link conversion; also can influence the coverage of sub-district; therefore; the ascending time slot of ascending time slot should be not more than the descending time slot interval of descending time slot at interval; according to 3GPP TS 36.211 V0.4.2; the descending time slot of descending time slot is equivalent to 288 sampling points at interval; therefore; the ascending time slot of ascending time slot at interval should be greater than 288 sampling points yet, still, and as previously mentioned; under the Extend cyclic prefix situation; when the available subcarrier number of system bandwidth was less than or equal to 300, the duration of ascending time slot compartment was equivalent to 408 sampling points, and this obviously is the waste to resource.(the structure of descending time slot and up similar, a time slot generally includes two parts: the symbol of M transmission data and the descending time slot interval that does not send data, and different is: under the Normal cyclic prefix situation, M=9, under the Extend cyclic prefix situation, M=8.In addition, descending time slot value at interval: being 288 sampling points under the Normal cyclic prefix situation, is 256 sampling points under the Extend cyclic prefix situation)
3. according to present send mode, terminal needs the size of taking into account system bandwidth, that is: whether system's available subcarrier number selects corresponding structure of time slot configuration parameter to send data greater than 300, in fact, the configuration parameter of these two kinds of structure of time slot has similar performance.And, according to present this sending method, when two neighbor cells disposed different system bandwidths, the data between the different terminals will have a strong impact on the efficient that terminal sends data owing to the inconsistent serious disturbance that produces of the circulating prefix-length of time slot symbol.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of wideband time division duplexing system up-link signal transmitting method, can simplify terminal and realize that more effective finite wireless resources of utilizing can improve the efficient that terminal sends data simultaneously indirectly.
Above-mentioned technical problem of the present invention solves like this; A kind of wideband time division duplexing system up-link signal transmitting method is provided; It is characterized in that: in Normal cyclic prefix and Extend cyclic prefix situation; Ascending time slot is 0.675ms; Ascending time slot is identical blanking time in the described signal; Be in the 30.72MHz situation in sample frequency; Satisfy that each symbol cyclic prefix part integer sampling point length is consistent, ascending time slot interval integer sampling point length is during less than or equal to the condition at descending time slot interval in the corresponding descending time slot
When the Cyclic Prefix value of Normal cyclic prefix was 229 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 482 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 220 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 472 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 211 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 462 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 202 sampling points, the Cyclic Prefix value of Extend cyclicprefix should be 452 sampling points.
According to sending method provided by the invention,
When the Cyclic Prefix value of Normal cyclic prefix was 229 sampling points, ascending time slot value at interval was 14 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 220 sampling points, ascending time slot value at interval was 104 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 211 sampling points, ascending time slot value at interval was 194 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 202 sampling points, ascending time slot value at interval was 284 sampling points.
Above-mentioned technical problem of the present invention further can solve like this, a kind of wideband time division duplexing system up-link signal transmitting method is provided, terminal sends some symbol and ascending time slot intervals that are made of Cyclic Prefix part and data division in the ascending time slot order, specifically may further comprise the steps:
3.1) determine ascending time slot integer sampling point length, total number of symbols and each symbol data part integer sampling point length that ascending time slot comprised by standard-required and sample rate;
3.2) each symbol cyclic prefix part integer sampling point length unanimity, ascending time slot at interval integer sampling point length determine the integer sampling point length parameter set at interval of optional Cyclic Prefix part integer sampling point length and corresponding ascending time slot thereof on the descending time slot basis at interval in smaller or equal to corresponding descending time slot;
3.3) send described symbol and ascending time slot interval by selected Cyclic Prefix part integer sampling point length in described standard-required and the described set and corresponding ascending time slot interval integer sampling point length parameter thereof at ascending time slot.
According to sending method provided by the invention, described ascending time slot integer sampling point length at interval is identical under the different system bandwidth situation, promptly comprise: whether system's available subcarrier number greater than two kinds of situations of 300, can be reduced to two kinds by four kinds of ascending time slots of needs at interval.
According to sending method provided by the invention, described ascending time slot integer sampling point length at interval is identical under Normalcyclic prefix and Extend cyclic prefix situation, further can be reduced to a kind of at interval by two kinds of ascending time slots of needs.
According to sending method provided by the invention, described step 3.3) selected in be according to the long more ascending time slot that can improve the Cyclic Prefix part integer sampling point length that resists interference performance and the shortest limited digital device transmitting-receiving transfer capability more at interval the contradiction between the integer sampling point length choose according to qualifications and choose longer Cyclic Prefix part under the should cost as far as possible.
According to sending method provided by the invention, described standard is the 3GPP standard, and described ascending time slot is 0.675ms, is under the 30.72MHz situation in sample frequency, and its integer sampling point length is 20736.
According to sending method provided by the invention, under Normal cyclic prefix situation, the total number of symbols that described ascending time slot comprises is 10, and wherein the data division integer sampling point length of 8 symbols is 2048, and the data division integer sampling point length of 2 symbols is 1024.
According to sending method provided by the invention, under Extend cyclic prefix situation, the total number of symbols that described ascending time slot comprises is 9, and wherein the data division integer sampling point length of 7 symbols is 2048, and the data division integer sampling point length of 2 symbols is 1024.
According to sending method provided by the invention, descending time slot interval integer sampling point length is 256 or 288 in the corresponding descending time slot of described ascending time slot.
According to sending method provided by the invention, the optional Cyclic Prefix part integer sampling point length of described ascending time slot and corresponding ascending time slot thereof the set of integer sampling point length parameter at interval comprise:
| The parameter group index | Cyclic Prefix value (sampling point) under the Normal cyclic prefix situation | Cyclic Prefix value (sampling point) under the Extend cyclic prefix situation | Ascending time slot is value (sampling point) at interval |
| 1 | 229 | 482 | 14 |
| 2 | 220 | 472 | 104 |
| 3 | 211 | 462 | 194 |
| 4 | 202 | 452 | 284 |
According to sending method provided by the invention, by the transmitting-receiving transfer capability and the cost factor of present digital device, described parameter group index " 3 " is current optimal selection; Along with the raising of level of hardware, described parameter group index " 1 " or " 2 " may be optimal selections from now on.
Wideband time division duplexing system up-link signal transmitting method provided by the invention, support four kinds of ascending time slots existing method at interval to have following advantage:
1. only support a kind of ascending time slot at interval, simplified the terminal realization;
2. ascending time slot at interval integer sampling point length effectively protected at interval-down link conversion and suitably saved Radio Resource smaller or equal to descending time slot in the corresponding descending time slot;
3. each symbol cyclic prefix length unanimity has been avoided may disturb between the different terminals, has improved data transmission efficiency indirectly.
Description of drawings
Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is a kind of schematic diagram (Normal cyclic prefix situation) of the transmission wideband uplink signal based on the TD-SCDMA structure of time slot.
Fig. 2 is the schematic diagram (Extend cyclic prefix situation) of another kind based on the transmission wideband uplink signal of TD-SCDMA structure of time slot.
Embodiment
The concrete grammar of setup parameter of the present invention at first, is described:
The present invention goes for conformance with standard and requires to adopt the system of 0.675ms as an ascending time slot, these time slots comprise two parts: the symbol of several transmission data and the ascending time slot that does not send data are at interval, with this system is example, and the inventive method can specifically describe and be:
Terminal is that unit sends signal with a time slot, and under Normal cyclic prefix situation, a time slot comprises 10 symbols and an ascending time slot at interval; Under Extend cyclic prefix situation, a time slot comprises 9 symbols and an ascending time slot at interval.Each symbol comprises Cyclic Prefix part and data division, and establishing sample frequency here is 30.72MHz, the duration=1/30.72MHz of a sampling point.
Ascending time slot interval, Cyclic Prefix part should satisfy following condition with data division:
1. under Normal cyclic prefix situation, the duration of interior these 10 a symbols Cyclic Prefix separately of time slot all is a constant that does not change with system bandwidth.Being chosen in of this 10 constants satisfies condition and 4 must make that also the ascending time slot gap size satisfies condition 3 outward.
2. under Extend cyclic prefix situation, the duration of interior these 9 a symbols Cyclic Prefix separately of time slot all is a constant that does not change with system bandwidth.Being chosen in of this 9 constants satisfies condition and 5 must make that also the ascending time slot gap size satisfies condition 3 outward.
3.Normal the ascending time slot under the cyclic prefix situation is identical with the ascending time slot interval under the Extend cyclic prefix situation at interval, and this ascending time slot is spaced apart a constant that does not change with system bandwidth, simultaneously, this ascending time slot at interval should be less than the descending time slot interval of descending time slot, that is: the duration of 288 sampling points.
4. under Normal cyclic prefix situation, the data division of interior 10 symbols of time slot satisfies following standard-required: the duration of the data division of 8 symbols is all identical, establishes the duration that is equivalent to M sampling point.The duration of the data division of other 2 symbols is all identical, establishes the duration that is equivalent to N sampling point.Here, M=2048, N=1024.
5. under Extend cyclic prefix situation, the data division of interior 9 symbols of time slot satisfies following standard-required: the duration of the data division of 7 symbols is all identical, establishes the duration that is equivalent to M sampling point.The duration of the data division of other 2 symbols is all identical, establishes the duration that is equivalent to N sampling point.Here, M=2048, N=1024.
Second goes on foot, and the detailed process of setup parameter of the present invention is described:
In E-UTRA system based on the TD-SCDMA structure of time slot, the highest sample frequency of system is 30.72MHz, be applied to different system bandwidths for the ease of UE, 3GPP technical report: 3GPPTR 25.814 standard codes: the frequency domain width of each carrier wave is 15kHz.Accordingly,
Under 30.72MHz sample frequency hypothesis, this time is equivalent to 2048 sampling points, is convenient to very much the realization of FFT.
As previously mentioned, the ascending time slot of a 0.675ms comprises two parts: the symbol of P transmission data and the ascending time slot that does not send data are at interval.
Under Normal cyclic prefix situation, P=10, this wherein has two symbols to be used for pilot signal transmitted to be used for the coherent demodulation of other symbol data, for reducing the expense of pilot tone, effective ways are to the duration less than the symbol that sends data duration of frequency pilot sign, in order to use the convenience of FFT, stipulate here: when pilot symbol transmitted, duration=1024 of this a symbol sampling point; And when sending user data, duration=2048 of this a symbol sampling point.
Under Extend cyclic prefix situation, P=9.This wherein has two symbols to be used for pilot signal transmitted to be used for the coherent demodulation of other symbol data, for reducing the expense of pilot tone, effective ways are to the duration less than the symbol that sends data duration of frequency pilot sign, in order to use the convenience of FFT, here stipulate: when pilot symbol transmitted, duration=1024 of this a symbol sampling point; And when sending user data, duration=2048 of this a symbol sampling point.
Under 30.72MHz sample frequency hypothesis, 0.675ms is equivalent to the duration of 20736 sampling points.Therefore, under Normal cyclic prefix situation, be used in time slot to do symbol cyclic prefix and ascending time slot at interval 2304 sampling points, that is: 2304=20736-8*2048-2*1024 are arranged total time.Under Extend cyclic prefix situation, be used in time slot to do symbol cyclic prefix and ascending time slot at interval 4352 sampling points, that is: 4352=20736-7*2048-2*1024 are arranged total time.In order to overcome foregoing problem: the distribution of these two times should be satisfied following feature:
1. under Normal cyclic prefix situation, the duration of the Cyclic Prefix of interior 10 symbols of time slot is all identical, and the duration of this Cyclic Prefix is a constant that does not change with system bandwidth.
2. under Extend cyclic prefix situation, the duration of the Cyclic Prefix of interior 9 symbols of time slot is all identical, and the duration of this Cyclic Prefix is a constant that does not change with system bandwidth.
3.Normal the ascending time slot under the cyclic prefix situation is identical with the ascending time slot interval under the Extended cyclic prefix situation at interval, and, this ascending time slot is spaced apart a constant that does not change with system bandwidth, simultaneously, this ascending time slot at interval should be less than the descending time slot interval of descending time slot, that is: the duration of 288 sampling points;
By above-mentioned feature, do following analysis and tabulation:
(1) by computational methods
Slot time=2304-10* Cyclic Prefix
And require:
0＜slot time≤288
, tabulation provides: under Normal cyclic prefix situation, ascending time slot all is an integer sampling point with Cyclic Prefix at interval, and ascending time slot value at interval is not more than all situations of 288 sampling points:
| Ascending time slot at interval | Cyclic Prefix |
| 4 | 230 |
| 14 | 229 |
| 24 | 228 |
| 34 | 227 |
| 44 | 226 |
| 54 | 225 |
| 64 | 224 |
| 74 | 223 |
| 84 | 222 |
| 94 | 221 |
| 104 | 220 |
| 114 | 219 |
| 124 | 218 |
| 134 | 217 |
| 144 | 216 |
| 154 | 215 |
| 164 | 214 |
| 174 | 213 |
| 184 | 212 |
| 194 | 211 |
| 204 | 210 |
| 214 | 209 |
| 224 | 208 |
| 234 | 207 |
| 244 | 206 |
| 254 | 205 |
| 264 | 204 |
| 274 | 203 |
| 284 | 202 |
(2) by computational methods
Slot time=2304-9* Cyclic Prefix
And require:
0＜slot time≤288
, tabulation provides: under Extended cyclic prfix situation, ascending time slot all is an integer sampling point with Cyclic Prefix at interval, and ascending time slot value at interval is not more than all situations of 288 sampling points:
| Ascending time slot at interval | Cyclic Prefix |
| 5 | 483 |
| 14 | 482 |
| 23 | 481 |
| 32 | 480 |
| 41 | 479 |
| 50 | 478 |
| 59 | 477 |
| 68 | 476 |
| 77 | 475 |
| 86 | 474 |
| 95 | 473 |
| 104 | 472 |
| 113 | 471 |
| 122 | 470 |
| 131 | 469 |
| 140 | 468 |
| 149 | 467 |
| 158 | 466 |
| 167 | 465 |
| 176 | 464 |
| 185 | 463 |
| 194 | 462 |
| 203 | 461 |
| 212 | 460 |
| 221 | 459 |
| 230 | 458 |
| 239 | 457 |
| 248 | 456 |
| 257 | 455 |
| 266 | 454 |
| 275 | 453 |
| 284 | 452 |
Wherein the ascending time slot under the behavior Normal cyclic prefix situation of runic mark at interval with Extended cyclic prefix situation under the identical at interval option of ascending time slot, can further simplify terminal and realize: promptly further change into for two kinds and only need to support a kind of ascending time slot at interval by needs.
(3) in sum, terminal only needs to support that above-mentioned optional parameters is under a kind of ascending time slot situation at interval:
| The parameter group index | Cyclic Prefix value (sampling point) under the Normal cyclic prefix situation | Cyclic Prefix value (sampling point) under the Extend cyclic prefix situation | Ascending time slot is value (sampling point) at interval |
| 1 | 229 | 482 | 14 |
| 2 | 220 | 472 | 104 |
| 3 | 211 | 462 | 194 |
| 4 | 202 | 452 | 284 |
(4) need expenditure be, the parameter group index is more little, ascending time slot value at interval is also just more little, correspondingly, the value of Cyclic Prefix is also just big more, it is also just strong more that the data that terminal sends resist interference performance.But ascending time slot value at interval is more little, and is also just high more to the transmitting-receiving transfer capability requirement of digital device, considers the transmitting-receiving transfer capability and the cost factor of present digital device, and the inventor thinks that parameter group index " 3 " is only at present.
At last, those skilled in the art that should be understood that the above only is preferred embodiment of the present invention, are not to be used for limiting practical range of the present invention; Everyly do equivalence according to the present invention and change and revise, all contained by claim of the present invention.
Claims (10)
1. wideband time division duplexing system up-link signal transmitting method, it is characterized in that: under Normal cyclic prefix and Extend cyclic prefix situation, ascending time slot is 0.675ms, ascending time slot is identical blanking time in the described signal, in sample frequency is under the 30.72MHz situation, when satisfying each symbol cyclic prefix part integer sampling point length unanimity, ascending time slot integer sampling point length be smaller or equal at interval condition of descending time slot in the corresponding descending time slot at interval
When the Cyclic Prefix value of Normal cyclic prefix was 229 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 482 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 220 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 472 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 211 sampling points, the Cyclic Prefix value of Extend cyclicprefix was 462 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 202 sampling points, the Cyclic Prefix value of Extend cyclicprefix should be 452 sampling points.
2. according to the described sending method of claim 1, it is characterized in that,
When the Cyclic Prefix value of Normal cyclic prefix was 229 sampling points, ascending time slot value at interval was 14 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 220 sampling points, ascending time slot value at interval was 104 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 211 sampling points, ascending time slot value at interval was 194 sampling points; Or
When the Cyclic Prefix value of Normal cyclic prefix was 202 sampling points, ascending time slot value at interval was 284 sampling points.
3. wideband time division duplexing system up-link signal transmitting method, terminal sends some symbol and ascending time slot intervals that are made of Cyclic Prefix part and data division in the ascending time slot order, it is characterized in that, specifically may further comprise the steps:
3.1) determine ascending time slot integer sampling point length, total number of symbols and each symbol data part integer sampling point length that ascending time slot comprised by standard-required and sample rate;
3.2) each symbol cyclic prefix part integer sampling point length unanimity, ascending time slot at interval integer sampling point length determine the integer sampling point length parameter set at interval of optional Cyclic Prefix part integer sampling point length and corresponding ascending time slot thereof on the descending time slot basis at interval in smaller or equal to corresponding descending time slot;
3.3) send described symbol and ascending time slot interval by Cyclic Prefix part integer sampling point length selected in described standard-required and the described set and corresponding ascending time slot interval integer sampling point length parameter thereof at ascending time slot.
4. according to the described sending method of claim 3, it is characterized in that described ascending time slot integer sampling point length at interval is identical under the different system bandwidth situation.
5. according to the described sending method of claim 3, it is characterized in that described ascending time slot integer sampling point length at interval is identical under Normal cyclic prefix and Extend cyclic prefix situation.
6. according to the described sending method of claim 3, it is characterized in that described step 3.3) in selected be according to the ascending time slot of Cyclic Prefix part integer sampling point length that improve to resist interference performance and limited digital device transmitting-receiving transfer capability at interval the contradiction between the integer sampling point length choose according to qualifications.
7. according to the described sending method of claim 3, it is characterized in that described standard is the 3GPP standard, described ascending time slot is 0.675ms, is under the 30.72MHz situation in sample frequency, and its integer sampling point length is 20736.
8. according to the described sending method of claim 7, it is characterized in that, under Normal cyclicprefix situation, the total number of symbols that described ascending time slot comprises is 10, wherein the data division integer sampling point length of 8 symbols is 2048, and the data division integer sampling point length of 2 symbols is 1024.
9. according to the described sending method of claim 7, it is characterized in that, under Extend cyclic prefix situation, the total number of symbols that described ascending time slot comprises is 9, wherein the data division integer sampling point length of 7 symbols is 2048, and the data division integer sampling point length of 2 symbols is 1024.
10. according to the described sending method of claim 7, it is characterized in that the optional Cyclic Prefix part integer sampling point length of described ascending time slot and corresponding ascending time slot thereof the set of integer sampling point length parameter at interval comprise:
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| US20060013325A1 (en) * | 2004-06-04 | 2006-01-19 | Avneesh Agrawal | Wireless communication system with configurable cyclic prefix length |
| CN1819574A (en) * | 2006-03-24 | 2006-08-16 | 清华大学 | Carrier frequency bias estimation with OFDMA up link system intersection |
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| US20060013325A1 (en) * | 2004-06-04 | 2006-01-19 | Avneesh Agrawal | Wireless communication system with configurable cyclic prefix length |
| CN1819574A (en) * | 2006-03-24 | 2006-08-16 | 清华大学 | Carrier frequency bias estimation with OFDMA up link system intersection |
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