CN101146077A - Pilot transmission device and method - Google Patents
Pilot transmission device and method Download PDFInfo
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- CN101146077A CN101146077A CNA2006101535273A CN200610153527A CN101146077A CN 101146077 A CN101146077 A CN 101146077A CN A2006101535273 A CNA2006101535273 A CN A2006101535273A CN 200610153527 A CN200610153527 A CN 200610153527A CN 101146077 A CN101146077 A CN 101146077A
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Abstract
The invention provides a preamble sending device, which includes a MAC ID encode processing unit, used to process MAC ID information encoding in preamble and output mapping sequence; a speed indication information processing unit, used to process the speed indication information in preamble and generate data signals with certain amount; wherein the speed indication information processing unit further includes a 32 bit encoding module, used to encode processing of the speed indication information; a time-varying interleaver, used to interlace processing of the speed indication information to facilitate interference randomization; and a preamble embedded unit, used to transmit the speed indication information embedded in the whole time slot by the mapping sequence. In addition, the invention also provides a preamble sending method. The invention realizes preamble expansion to the transmission on the whole time slot, in order to acquire greater time diversity gain and adopts the interleaver, in order to facilitate interference randomization.
Description
Technical field
The present invention relates to the communications field, specially refer to pilot transmission device and method.
Background technology
The 3G mobile communication technology is ripe gradually commercial at present, and 3GPP2 CDMA20001XEV-DO can further provide competitive wireless access system in the coming years.But want to keep following 10 years or the competitiveness in decades, need to introduce new wireless access technology.At present industry is reached preliminary unanimity with regard to the technology of the eating dishes without rice or wine evolution of 3GPP2, promptly is divided into two stages to carry out, and the stage one is adopted the multi-carrier EV-DO technology, more consider compatible, the evolution items of short-term just; Stages two AIE (AIE) introduces more advanced technology, such as OFDM (OFDM) technology, MIMO technology or the like, can improve the spectrum efficiency and the peak rate of wireless access system greatly, be the evolution plan of 3GPP2 standard long-term.How to carry out technology evolution about the AIE stage two, each major company proposes two kinds of mode of operations again: i.e. SBC (strict compatibility mode) pattern and LBC (loose compatibility mode) pattern.By in August, 2006, the framework of AIE SBC pattern has been worked out basically and has been finished, that is, may be the SBC that proposes based on QualCom company, can carry out certain modification and can finish and be upgraded to SBC on the basis of DO Rev.B.
In the CDMA20001xEV-DO system, forward data transmission is based on time division multiplexing, and the information in leading by being carried at (preamble) is come the transmission purpose of identification data.Each user needs at first to detect leading that each time slot sends, and whether to one's name the data that definite thus this time slot sends belong to this user if indicate, and this user just continues the resolution data information content.Simultaneously when forward data transmission, the data symbol in each time slot all is based on the CDM data.
In the technological frame of the SBC pattern that QualCom company proposes (referring to C30-20060731-044R2 AHQRZ UHDR-DO overview), forward data transmission still adopts the time division multiplexing mode of DO Rev.B, be that forward direction is a transmission unit with time slot (slot) still, service data transmission in each time slot.Wherein, can transmit the data of CDM in each time slot, data that also can transmission OFDM (OFDM).Wherein, half crack data structure as shown in Figure 1.
When the data of transmission are based on the OFDM data, need redesign leading.Because in the up-to-date motion (C30-20060731-046 QCOM UHDR-DOPreamble Design) of high pass, provided a kind of leading method for designing during based on the OFDM transfer of data: preceding half time slot of whole time slot is divided into 32 tile (1 tile is appreciated that into 1 time), each tile is made up of 16 continuous tones, as shown in Figure 2.The whole new leading 10bits information of carrying comprises the MACID information of 8bits and the speed indication information of 2bits.The MAC ID of 8bits is shone upon through certain, form 32 sequence S0, S1, S2 ..., wherein each sequence has 4bits information.The speed of 2bits forms the sequence of 32 symbol (data symbol) then through coding, repetition, punching, and then through scrambler, is mapped to tones at last and goes up transmission, and whole transmission structure has been shown among Fig. 3.
As shown in Figure 3, wherein 32 symbol will transmit on certain tone that be mapped to respectively among 32 tile, specifically how to shine upon by sequence S0, S1 ... Deng definite.As S0=0001, the 1st symbol that then identifies 32 symbol will be placed on the 1st tone of tile0 and transmit.By such design, the whole symbol of transmission is dispersed on the whole frequency band, can obtain frequency diversity gain.Because user's MACID is inequality,, guaranteed the difference of pilot design between the user simultaneously so each user's mapping is difficult to repeat.
Yet, in technique scheme and since the resource occupation of transmission preamble preceding half time slot, and the length of half time slot has 0.83 millisecond, for user that high speed (for example 350 kilometers/hour) moves, the influence owing to Doppler frequency can impact transmission performances.Therefore need a kind of problem that can solve preamble transmission under the high-speed case.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, the invention provides a kind of pilot transmission device and leading transmission method.
According to an aspect of the present invention, provide a kind of pilot transmission device, having comprised:
The MACID coding processing unit is used for leading MACID information is carried out encoding process, and the output sequence of mapping; The speed indication information processing unit, be used for leading speed indication information is handled, to generate the data symbol of specific quantity, wherein, the speed indication information processing unit further comprises: 32 coding modules are used for speed indication information is carried out encoding process; With the time become interleaver, be used for speed indication information is carried out interleaving treatment, so that interference randomization; And leading embedding unit, be used for speed indication information being embedded on the whole time slot and transmit according to sequence of mapping.
Wherein, whole transmission time slot is divided into 32 time, and each Resource Block comprises 32 continuous sub-carriers.After in the speed indication information processing unit, speed indication information being carried out encoding process, BPSK modulation, scrambler processing, interleaving treatment and multiply by certain gain, generate 32 data symbols.Sequence of mapping is used in reference to the position of the subcarrier that is shown in each data symbol of selecting in each time that is used for the generation of transmission rate indication information.
Wherein, when above-mentioned, become in the interleaver and further comprise: the time become shift unit, be used for determining the position of the time that first data symbol of speed indication information need be placed, and back to back time, place a plurality of data symbols successively from the time-frequency resource block position of determining by customizing messages; And common interleaver, become shift unit when being connected to, be used to make the data symbol distribution randomization of data resource piece transmission.
Wherein, become the customizing messages that uses in the shift unit time and comprise temporal information, sector mark information at least.And common interleaver is a memory.
According to a further aspect in the invention, provide a kind of leading transmission method, may further comprise the steps:
First step carries out encoding process to the MAC id information in leading, and the output sequence of mapping; Second step is handled the speed indication information in leading, to generate the data symbol of specific quantity, wherein, handle comprise the encoding process of being undertaken by 32 coding modules and by the time become the interleaving treatment that interleaver carries out; And third step, according to sequence of mapping speed indication information is embedded on the whole time slot and transmits.
Wherein, whole transmission time slot is divided into 32 time, and each Resource Block comprises 32 continuous sub-carriers.And sequence of mapping is used in reference to the position of the subcarrier that is shown in each data symbol of selecting in each time that is used for the generation of transmission rate indication information.
Processing in above-mentioned second step comprises that also BPSK modulation, scrambler are handled and gain multiplied is handled, and generates 32 data symbols.
And, interleaving treatment in above-mentioned second step further comprises: data symbol is placed and is handled, determine the position of the time that first data symbol of speed indication information need be placed by customizing messages, and back to back time, place a plurality of data symbols successively from the time-frequency resource block position of determining; And randomization, make the data symbol distribution randomization of data resource piece transmission.
Wherein, place the customizing messages that uses in the processing at data symbol and comprise temporal information, sector mark information at least.In randomization, make the distribution randomization of Resource Block by the matrixing read operation of memory.
By above technical scheme, the present invention has realized following beneficial effect: preamble is expanded on the whole time slot transmit, can obtain bigger time diversity gain; Adopt interleaver, can be with interference randomization.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that half crack data structure is shown;
Fig. 2 is the schematic diagram that the time slot of division is shown;
Fig. 3 is the schematic diagram with the structure of transmission preamble that illustrates according to correlation technique;
Fig. 4 is the block diagram that illustrates according to pilot transmission device of the present invention;
Fig. 5 is the schematic diagram that the tile distribution of time slot is shown;
Fig. 6 illustrates the schematic diagram that the tile after the randomization distributes;
Fig. 7 is the schematic diagram that preamble transmission structure is shown;
Fig. 8 is the schematic diagram that the interleaver structure is shown; And
Fig. 9 is the flow chart that illustrates according to leading transmission method of the present invention.
Embodiment
Specifically describe the preferred embodiments of the present invention hereinafter with reference to accompanying drawing, wherein, accompanying drawing constitutes the application's a part, and is used from explaination principle of the present invention with embodiments of the invention one.
First embodiment
According to the first embodiment of the present invention, a kind of pilot transmission device 400 is provided, be described below in conjunction with Fig. 4 to Fig. 8.
As shown in Figure 4, pilot transmission device 400 according to the present invention comprises:
MACID coding processing unit 402 is used for leading MACID information is carried out encoding process, and the output sequence of mapping; Speed indication information processing unit 404, be used for leading speed indication information is handled, to generate the data symbol of specific quantity, wherein, speed indication information processing unit 404 further comprises: 32 coding modules 406 are used for speed indication information is carried out encoding process; The time become interleaver 408, be used for speed indication information is carried out interleaving treatment, so that interference randomization; And leading embedding unit 410, be used for speed indication information being embedded on the whole time slot and transmit according to sequence of mapping.
Wherein, sequence of mapping is used in reference to the position of the subcarrier (tone) that is shown in each data symbol (symbol) that is used for the generation of transmission rate indication information of selecting in each time.And whole transmission time slot is divided into 32 time (tile), and each video resource piece comprises 32 continuous sub-carriers.After in speed indication information processing unit 404, speed indication information being carried out encoding process, BPSK modulation, scrambler processing, interleaving treatment and multiply by certain gain, generate 32 data symbols.
As shown in Figure 5, rate information through coding, is modulated, 32 symbol that the scrambler that interweaves forms are put into respectively among 32 tile and transmit on some tone, and each tile comprises 32 continuous tones.Because each tile comprises 32 continuous tones, so when in each tile, selecting certain tone transmission, method (having only 16 continuous tones) in the correlation technique, the probability that can reduce to conflict, promptly reduced two users choose identical tone simultaneously in certain tile probability, receiving terminal can reduce the probability (erroneous judgement) that user error receives when receiving preamble like this.Simultaneously, because whole preamble is extended on the whole time slot and transmits, the time is elongated, so than the method (only preceding half time slot) of correlation technique, can obtain more time diversity gain (time diversity).
Wherein, becoming interleaver 408 when above-mentioned further comprises: the time become shift unit 412, be used for determining the position of the time that first data symbol of speed indication information need be placed, and back to back time, place a plurality of data symbols successively from the time-frequency resource block position of determining by customizing messages; And common interleaver 414, become shift unit 412 when being connected to, be used to make the data symbol distribution randomization of data resource piece transmission.
Wherein, become the customizing messages that uses in the shift unit 412 time and comprise temporal information, sector mark information at least.
And interleaver is with the position randomization of 32 tile, and it is arranged as shown in Figure 6, like this, the interference randomization that each symbol can be subjected to, more useful for the user of high-speed mobile.Wherein, the structure of common interleaver as shown in Figure 8, common interleaver can be a memory.For example, it can be a matrix storage, when reading in data, reads in according to row, and sense data the time, reads according to row, for example shown in figure below
Can prevent that so continuous interference from taking place, with interference randomization.
In addition, Fig. 7 shows the schematic diagram of preamble transmission structure.As shown in Figure 7, the MAC ID of 8bits handles through the coding module of (10.8), forms the information of 10bits, is divided into 2 groups then: high 5bits and low 5bits.Be input to the RS coding module then respectively, output 32 sequence S0, S1...... etc.Wherein the output of each sequence is 5bits, and scope is 0～31, is used for selecting at each tile the position of the tone of transmission data.The speed indication information of 2bits is passed through the coding module of (32,2) and is handled, passes through BPSK modulation, scrambler and interweave, multiply by certain gain, by the selection of S sequence, is placed on the 32tile and transmits then.
Second embodiment
According to a second embodiment of the present invention, provide a kind of leading transmission method, may further comprise the steps:
Step S902 carries out encoding process to the MAC id information in leading, and the output sequence of mapping; Step S904 handles the speed indication information in leading, to generate the data symbol of specific quantity, wherein, handle comprise the encoding process of being undertaken by 32 coding modules and by the time become the interleaving treatment that interleaver carries out; And step S906, according to sequence of mapping speed indication information is embedded on the whole time slot and transmits.
Wherein, whole transmission time slot is divided into 32 time, and each Resource Block comprises 32 continuous sub-carriers.And sequence of mapping is used in reference to the position of the subcarrier that is shown in each data symbol of selecting in each time that is used for the generation of transmission rate indication information.
Processing in above-mentioned steps S904 comprises that also BPSK modulation, scrambler are handled and gain multiplied is handled, and generates 32 data symbols.
And the interleaving treatment among the above-mentioned steps S904 further comprises:
Data symbol place to be handled, and determines the position of the time that first data symbol of speed indication information need be placed by customizing messages, and places a plurality of data symbols successively from the time-frequency resource block position of determining back to back time; And randomization, make the data symbol distribution randomization of data resource piece transmission.
Wherein, place the customizing messages that uses in the processing at data symbol and comprise temporal information, sector mark information at least.In randomization, make the distribution randomization of Resource Block by the matrixing read operation of memory.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a pilot transmission device is characterized in that, comprising:
MAC ID coding processing unit is used for leading MAC id information is carried out encoding process, and the output sequence of mapping;
The speed indication information processing unit is used for leading speed indication information is handled, and to generate the data symbol of specific quantity, wherein, described speed indication information processing unit further comprises:
32 coding modules are used for described speed indication information is carried out encoding process; With
The time become interleaver, be used for described speed indication information is carried out interleaving treatment, so that interference randomization; And
Leading embedding unit is used for according to described sequence of mapping described speed indication information being embedded on the whole time slot and transmits.
2. pilot transmission device according to claim 1 is characterized in that, described whole transmission time slot is divided into 32 time, and each Resource Block comprises 32 continuous sub-carriers.
3. pilot transmission device according to claim 2, it is characterized in that, after in described speed indication information processing unit, described speed indication information being carried out encoding process, BPSK modulation, scrambler processing, interleaving treatment and multiply by certain gain, generate 32 data symbols.
4. pilot transmission device according to claim 2 is characterized in that, described sequence of mapping is used in reference to and is shown in the position that being used to of selecting in each described time transmit the subcarrier of each data symbol that described speed indication information produces.
5. pilot transmission device according to claim 2 is characterized in that, becomes interleaver when described and further comprises:
The time become shift unit, be used for determining the position of the time that first data symbol of described speed indication information need be placed, and back to back time, place described a plurality of data symbol successively from the described time-frequency resource block position of determining by customizing messages; And
Common interleaver is connected to and becomes shift unit when described, is used to make the described data symbol distribution randomization of described data resource piece transmission.
6. pilot transmission device according to claim 5 is characterized in that, becomes the described customizing messages that uses in the shift unit when described and comprises temporal information, sector mark information at least.
7. pilot transmission device according to claim 5 is characterized in that, described common interleaver is a memory.
8. a leading transmission method is characterized in that, may further comprise the steps:
First step carries out encoding process to the MAC id information in leading, and the output sequence of mapping;
Second step is handled the speed indication information in leading, to generate the data symbol of specific quantity, wherein, described processing comprise the encoding process of being undertaken by 32 coding modules and by the time become the interleaving treatment that interleaver carries out; And
Third step is embedded into described speed indication information on the whole time slot according to described sequence of mapping and transmits.
9. leading transmission method according to claim 8 is characterized in that, described whole transmission time slot is divided into 32 time, and each Resource Block comprises 32 continuous sub-carriers.
10. leading transmission method according to claim 8 is characterized in that, the described processing in described second step comprises that also BPSK modulation, scrambler are handled and gain multiplied is handled, and generates 32 data symbols.
11. leading transmission method according to claim 10 is characterized in that, described sequence of mapping is used in reference to and is shown in the position that being used to of selecting in each described time transmit the subcarrier of each data symbol that described speed indication information produces.
12. leading transmission method according to claim 10 is characterized in that, the interleaving treatment in described second step further comprises:
Data symbol is placed and is handled, determine the position of the time that first data symbol of described speed indication information need be placed by customizing messages, and back to back time, place described a plurality of data symbol successively from the described time-frequency resource block position of determining; And
Randomization makes the described data symbol distribution randomization of described data resource piece transmission.
13. leading transmission method according to claim 12 is characterized in that, places the described customizing messages that uses in the processing at described data symbol and comprises temporal information, sector mark information at least.
14. leading transmission method according to claim 12 is characterized in that, in described randomization, makes the distribution randomization of described Resource Block by the matrixing read operation of memory.
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| CNA2006101535273A CN101146077A (en) | 2006-09-11 | 2006-09-11 | Pilot transmission device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594691B (en) * | 2008-05-27 | 2011-06-22 | 中兴通讯股份有限公司 | Generation method of random access leader sequence of LTE system and device thereof |
| US8559819B2 (en) | 2008-10-31 | 2013-10-15 | Huawei Technologies Co., Ltd. | Information transfer and receiving method, system, and device |
| CN108809629A (en) * | 2018-06-14 | 2018-11-13 | 四川安迪科技实业有限公司 | A kind of information ciphering method based on pseudorandom time-varying interweaving encoding |
| WO2019056371A1 (en) * | 2017-09-25 | 2019-03-28 | 华为技术有限公司 | Data packet processing method, optical line terminal, optical network unit, and system |
-
2006
- 2006-09-11 CN CNA2006101535273A patent/CN101146077A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594691B (en) * | 2008-05-27 | 2011-06-22 | 中兴通讯股份有限公司 | Generation method of random access leader sequence of LTE system and device thereof |
| US8559819B2 (en) | 2008-10-31 | 2013-10-15 | Huawei Technologies Co., Ltd. | Information transfer and receiving method, system, and device |
| WO2019056371A1 (en) * | 2017-09-25 | 2019-03-28 | 华为技术有限公司 | Data packet processing method, optical line terminal, optical network unit, and system |
| CN108809629A (en) * | 2018-06-14 | 2018-11-13 | 四川安迪科技实业有限公司 | A kind of information ciphering method based on pseudorandom time-varying interweaving encoding |
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Application publication date: 20080319 |