CN106685619A - Data sending method and data sending device - Google Patents

Data sending method and data sending device Download PDF

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Publication number
CN106685619A
CN106685619A CN201510753379.8A CN201510753379A CN106685619A CN 106685619 A CN106685619 A CN 106685619A CN 201510753379 A CN201510753379 A CN 201510753379A CN 106685619 A CN106685619 A CN 106685619A
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Prior art keywords
mapping mode
subcarrier
mode
precoding
information
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CN201510753379.8A
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Chinese (zh)
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许进
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ZTE Corp
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ZTE Corp
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Priority to CN201510753379.8A priority Critical patent/CN106685619A/en
Priority to PCT/CN2016/102034 priority patent/WO2017076155A1/en
Publication of CN106685619A publication Critical patent/CN106685619A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2615—Reduction thereof using coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0008—Wavelet-division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a data sending method and a data sending device. The method comprises the following steps: acquiring a modulation symbol sequence and first information, wherein the modulation symbol sequence includes modulation symbols to be transmitted, and the first information includes coverage level indication information or pre-coding indication information or subcarrier allocation information or the combination thereof; determining a mapping mode corresponding to the first information in preset mapping modes according to the first information and the preset mapping modes; and mapping the modulation symbol sequence to a subcarrier according to the mapping mode to get a signal sequence. Data can be sent in different parameter configuration scenarios of a narrow-band LTE Internet-of-things system. Therefore, the peak-to-average power ratio of sent signals is reduced, the power consumption and cost of terminals are saved, and the power amplification efficiency of terminals is improved.

Description

A kind of data transmission method for uplink and device
Technical field
The present invention relates to communication technology, espespecially a kind of data transmission method for uplink and device.
Background technology
Existing Long Term Evolution (Long Term Evolution, abbreviation LTE) standard and LTE-A standards Up-link in, using single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, abbreviation SC-FDMA) technology.
In SC-FDMA technologies, it is possible to create higher peak-to-average power ratio (peak to average Power ratio, abbreviation PAPR), i.e., the ratio between the peak power and mean power of signal is higher, In prior art, in order to avoid producing higher peak in the up-link of LTE standard or LTE-A standards Power ratio, the method that transmitter would generally adopt back-off, that is, allow the power amplifier work of transmitter Make in the mean power output level more much lower than peak power.
However, with the development of technology of Internet of things, the protenchyma working application (Narrow based on LTE technologies Band Internet of Thing, abbreviation NB-IOT) in technology, the method for back-off of the prior art The requirement of NB-IOT terminal-pair peak-to-average force ratios cannot be met.
The content of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of data transmission method for uplink and system, to Solve the problems, such as the requirement that cannot meet NB-IOT terminal-pair peak-to-average force ratios.
In order to reach the object of the invention, the invention provides a kind of data transmission method for uplink, including：
Modulation symbol sequence and the first information are obtained, the modulation symbol sequence includes modulation symbol waiting for transmission Number, the first information includes following any one or its combination：Covering grade configured information or precoding Configured information or subcarrier distribution information；
According to the first information and default mapping mode, determine in the default mapping mode with described The corresponding mapping mode of one information；
The modulation symbol sequence is mapped on subcarrier according to the mapping mode, signal sequence is obtained Row.
Further, it is described that the modulation symbol sequence is mapped to into subcarrier according to the mapping mode On, after obtaining signal sequence, also include：
The signal sequence is carried out into Fourier inversion, signal to be sent is obtained.
Further, the default mapping mode includes following any one or its combination：List carrier wave reflects Penetrate mode, minority subcarrier maps mode, sub-carrier selection mapping mode or precoding mapping mode；
Further, the covering grade configured information includes：Depth covering grade, enhancing covering grade Or general covering grade；
Further, it is described according to the first information and default mapping mode, determine the default mapping Mapping mode corresponding with the first information in mode, including：
According to the depth covering grade and the default mapping mode, determine that the mapping mode is described List carrier wave mapping mode；Or,
According to the enhancing covering grade and the default mapping mode, determine that the mapping mode is described Sub-carrier selection mapping mode.Or,
According to the general covering grade and the default mapping mode, determine that the mapping mode is described Minority subcarrier maps mode or the precoding mapping mode.
Further, including：It is described according to the general covering grade and the default mapping mode, really The fixed mapping mode is minority subcarrier maps mode or precoding mapping mode, is also included：
Distribute information according to the subcarrier, determine that the mapping mode is the minority subcarrier maps side Formula or the precoding mapping mode；Or,
According to the precoding information configured information, determine that the mapping mode reflects for the minority subcarrier Penetrate mode or the precoding mapping mode.
Further, including：It is described to distribute information according to the subcarrier, determine that the mapping mode is Minority subcarrier maps mode or precoding mapping mode, including：
First threshold P1 is less than or equal to according to available subcarrier number in the subcarrier distribution information, it is determined that The mapping mode is minority subcarrier maps mode；
First threshold P1 is more than according to available subcarrier number in the subcarrier distribution information, institute is determined Mapping mode is stated for precoding mapping mode；Wherein, P1 is positive integer, and 2≤P1≤4.
Further, including：It is described according to the precoding information configured information, determine the mapping side Formula is the minority subcarrier maps mode or the precoding mapping mode, including：
It is designated as not enabling according to the precoding configured information, determines that the mapping mode is the minority Subcarrier maps mode；
It is designated as enabling according to the precoding configured information, determines that the mapping mode is the precoding Mapping mode.
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, minority subcarrier maps mode, sub-carrier selection mapping mode or precoding mapping side Formula；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
It is designated as not enabling according to the default mapping mode and the precoding configured information, it is determined that described Mapping mode is the list carrier wave mapping mode or the sub-carrier selection mapping mode；Or
It is designated as enabling according to the default mapping mode and the precoding configured information, it is determined that described reflect Mode is penetrated for the precoding mapping mode.
Further, including：It is described to be referred to according to the default mapping mode and the precoding configured information It is shown as not enabling, it is that the list carrier wave mapping mode or the subcarrier are selected to determine the mapping mode Mapping mode is selected, is also included：
1 is equal to according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The sub-carrier selection mapping mode.
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, minority subcarrier maps mode and precoding mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in subcarrier distribution information is stated, and less than or equal to Second Threshold P2, determines that the mapping mode is the minority subcarrier maps；
It is more than the Second Threshold P2 according to available subcarrier number in subcarrier distribution information is stated, determines institute Mapping mode is stated for the precoding mapping mode, wherein, P2 is positive integer, and 2≤P2≤4.
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, sub-carrier selection mapping mode and precoding mapping mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 and less than or equal to the 3rd threshold value according to available subcarrier number in subcarrier distribution information is stated P3, determines that the mapping mode is sub-carrier selection mapping mode；
It is more than the 3rd threshold value P3 according to available subcarrier number in subcarrier distribution information is stated, determines institute It is precoding mapping mode to state mapping mode, wherein, P3 is the positive integer more than 1.
Further, including：
The list carrier wave mapping mode, including：In each orthogonal frequency division multiplex OFDM of dispatching cycle In the persistent period of symbol, a modulation symbol in the modulation symbol sequence is mapped to into the scheduling week On one available subcarrier of interim fixed position；Or,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；
The sub-carrier selection mapping mode, including：Continue in each OFDM symbol of dispatching cycle In time, a subcarrier is selected in pre-assigned multiple subcarriers, by the modulation symbol sequence In a modulation symbol be mapped on the subcarrier；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier；Or,
The precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length for M sequence be added.
Further, including, the K modulation symbol, including K1 QPSK modulation symbol, and K2 BPSK modulation symbol, wherein, K1 and K2 is positive integer, and K1+K2=K.
Further, including：The orthogonal sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
Present invention also offers a kind of data sending device, including：
First acquisition module, for obtaining modulation symbol sequence and the first information, the modulation symbol sequence Including modulation symbol waiting for transmission, the first information includes following any one or its combination：Cover etc. Level configured information or precoding configured information or subcarrier distribution information；
Determining module, for according to the first information and default mapping mode, determining the default mapping Mapping mode corresponding with the first information in mode；
Second acquisition module, for the modulation symbol sequence to be mapped to into sub- load according to the mapping mode On ripple, signal sequence is obtained.
Further, second acquisition module, is additionally operable to for the signal sequence to carry out Fourier's contravariant Change, obtain signal to be sent.
Further, the default mapping mode includes following any one or its combination：List carrier wave reflects Penetrate mode, minority subcarrier maps mode, sub-carrier selection mapping mode or precoding mapping mode；
Further, the covering grade configured information includes：Depth covering grade, enhancing covering grade Or general covering grade；
Further, the determining module, specifically for according to the depth covering grade and described default Mapping mode, determines that the mapping mode is the list carrier wave mapping mode；Or, according to the increasing Strong covering grade and the default mapping mode, determine the mapping mode for sub-carrier selection mapping Mode.Or, according to the general covering grade and the default mapping mode, determine the mapping side Formula is the minority subcarrier maps mode or the precoding mapping mode.
Further, including：The determining module, specifically for distributing information according to the subcarrier, The mapping mode is determined for the minority subcarrier maps mode or the precoding mapping mode；Or Person, according to the precoding information configured information, determines that the mapping mode reflects for the minority subcarrier Penetrate mode or the precoding mapping mode.
Further, including：The determining module, specifically for according in the subcarrier distribution information Available subcarrier number is less than or equal to first threshold P1, determines that the mapping mode is minority subcarrier maps Mode；Or, first threshold P1 is more than according to available subcarrier number in the subcarrier distribution information, Determine that the mapping mode is precoding mapping mode；Wherein, P1 is positive integer, and 2≤P1≤4.
Further, including：The determining module, specifically for being referred to according to the precoding configured information It is shown as not enabling, determines that the mapping mode is the minority subcarrier maps mode；Or, according to institute State precoding configured information to be designated as enabling, determine that the mapping mode is the precoding mapping mode.
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, minority subcarrier maps mode, sub-carrier selection mapping mode or precoding mapping side Formula；
The determining module, is additionally operable to：According to the default mapping mode and the precoding configured information It is designated as not enabling, determines the mapping mode for the list carrier wave mapping mode or the subcarrier Choose for user mode；Or, it is designated as according to the default mapping mode and the precoding configured information Enable, determine that the mapping mode is the precoding mapping mode.
Further, including：The determining module, is additionally operable to according to can in the subcarrier distribution information 1 is equal to number of sub carrier wave, determines that the mapping mode is the list carrier wave mapping mode；Or, root It is more than 1 according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is the son Carrier wave Choose for user mode.
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, minority subcarrier maps mode and precoding mode；
The determining module, is additionally operable to be equal to 1 according to stating in subcarrier distribution information available subcarrier number, Determine that the mapping mode is the list carrier wave mapping mode；Can use according to stating in subcarrier distribution information Number of sub carrier wave is more than 1, and less than or equal to Second Threshold P2, determines that the mapping mode is described few Number subcarrier maps；It is more than the Second Threshold according to available subcarrier number in subcarrier distribution information is stated P2, determines the mapping mode for the precoding mapping mode, wherein, P2 is positive integer, and 2≤ P2≤4。
Further, including：The default mapping mode includes following any one or its combination：List Carrier wave mapping mode, sub-carrier selection mapping mode and precoding mapping mode；
The determining module, is additionally operable to be equal to 1 according to stating in subcarrier distribution information available subcarrier number, Determine that the mapping mode is the list carrier wave mapping mode；Can use according to stating in subcarrier distribution information Number of sub carrier wave determines the mapping mode for subcarrier choosing more than 1 and less than or equal to the 3rd threshold value P3 Select mapping mode；It is more than the 3rd threshold value P3 according to available subcarrier number in subcarrier distribution information is stated, Determine that the mapping mode is precoding mapping mode, wherein, P3 is the positive integer more than 1.
Further, including：
The list carrier wave mapping mode, including：In each orthogonal frequency division multiplex OFDM of dispatching cycle In the persistent period of symbol, a modulation symbol in the modulation symbol sequence is mapped to into the scheduling week On one available subcarrier of interim fixed position；Or,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；
The sub-carrier selection mapping mode, including：Continue in each OFDM symbol of dispatching cycle In time, a subcarrier is selected in pre-assigned multiple subcarriers, by the modulation symbol sequence In a modulation symbol be mapped on the subcarrier；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier；Or,
The precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length for M sequence be added.
Further, including, the K modulation symbol, including K1 QPSK modulation symbol, and K2 BPSK modulation symbol, wherein, K1 and K2 is positive integer, and K1+K2=K.
Further, including：The orthogonal sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
Compared with prior art, the present invention includes obtaining modulation symbol sequence and the first information, the modulation Symbol sebolic addressing includes modulation symbol waiting for transmission, and the first information includes following any one or its combination： Covering grade configured information or precoding configured information or subcarrier distribution information；According to the first information With default mapping mode, mapping mode corresponding with the first information in the default mapping mode is determined； The modulation symbol sequence is mapped on subcarrier according to the mapping mode, signal sequence is obtained.It is real Show and sent data under the different parameters configuration scene of arrowband LTE Internet of things system, so as to reduce sending The peak-to-average force ratio of signal, and then the energy consumption and cost of terminal are saved, improve the power amplification efficiency of terminal.
Other features and advantages of the present invention will illustrate in the following description, also, partly from froming the perspective of Become apparent in bright book, or understood by implementing the present invention.The purpose of the present invention is excellent with other Point can be realized and obtained by specifically noted structure in description, claims and accompanying drawing .
Description of the drawings
Accompanying drawing is used for providing and further understanding technical solution of the present invention, and constitutes one of description Point, it is used to explain technical scheme together with embodiments herein, do not constitute to the present invention The restriction of technical scheme.
Fig. 1 is the schematic flow sheet of the embodiment of data transmission method for uplink of the present invention；
Fig. 2 is the list carrier wave mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention two；
Fig. 3 is the sub-carrier selection mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention three；
Fig. 4 is the minority sub-carrier selection mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention four；
Fig. 5 is the precoding schematic diagram of the employing pre-coding matrix of the embodiment of data transmission method for uplink of the present invention five；
Fig. 6 is that the employing sequence of the embodiment of data transmission method for uplink of the present invention six carries out precoding schematic diagram；
Fig. 7 is the structural representation of the embodiment of data sending device of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing Embodiments of the invention are described in detail.It should be noted that in the case where not conflicting, this Shen Please in embodiment and the feature in embodiment can mutual combination in any.
Data transmission method for uplink provided in an embodiment of the present invention specifically can apply to based on the arrowband of LTE technologies In Internet of Things application technology during data is activation.The data transmission method for uplink that the present embodiment is provided specifically can pass through Data sending device performing, the data sending device can with it is integrated in the terminal, or individually set Put, wherein, the mobile terminal can be cell phone or computer, and the data sending device can adopt soft The mode of part and/or hardware is realizing.The data transmission method for uplink and device for providing the present embodiment below is carried out Explain.
Fig. 1 is the schematic flow sheet of the embodiment of data transmission method for uplink of the present invention, as shown in figure 1, this reality The executive agent for applying example can be data sending device, the data transmission method for uplink that the present invention is provided, including：
Step 101, acquisition modulation symbol sequence and the first information.
In the present embodiment, the modulation symbol sequence includes modulation symbol waiting for transmission, first letter Breath includes following any one or its combination：Covering grade configured information or precoding configured information or son are carried Information is matched somebody with somebody in wavelength-division.
Specifically, covering grade information is that the semi-static signaling sent by receiving base station is obtained, wherein The covering grade configured information includes：Depth covering grade, enhancing covering grade or general covering grade.
Further, on the basis of covering grade information is obtained, can also obtain, it is pre- that base station sends Coding indication information, wherein, precoding configured information is used to indicate that whether precoding enables.
Step 102, according to the first information and default mapping mode, in determining the default mapping mode Mapping mode corresponding with the first information.
For example, under the conditions of very low signal to noise ratio, each is dispatched the terminal works of depth covering grade Available number of sub carrier wave is less in cycle, for example only one of which available subcarrier, and transfer rate is relatively low, Need to increase signal to noise ratio by way of repeating to send data, the transmitting continuous time of data is longer；Strengthen The terminal works of covering grade are more than 1 in Low SNR, available subcarrier number, transfer rate Slightly above depth covering grade, it is possible to use slightly higher rate sending data, transmission time is longer；Typically Under conditions of signal to noise ratio is higher, available number of sub carrier wave is more, data for the terminal works of covering grade The persistent period of transmission is shorter, and terminal-pair PAPR has certain tolerance.
Step 103, the modulation symbol sequence is mapped on subcarrier according to the mapping mode, is obtained Signal sequence.
Specifically, presetting mapping mode includes following any one or its combination：List carrier wave mapping mode, Minority subcarrier maps mode, sub-carrier selection mapping mode or precoding mapping mode.
For example, the list carrier wave mapping mode, including：In each orthogonal frequency of dispatching cycle In the persistent period of multiplexing OFDM symbol, a modulation symbol in the modulation symbol sequence is mapped to In the dispatching cycle on an available subcarrier of fixed position；Or,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；Wherein, the modulation system of the K modulation symbol can be with identical, it is also possible to different；
The modulation system of the K modulation symbol can be with difference, including in the K modulation symbol K1 modulation symbol is QPSK modulation, and K2 modulation symbol is BPSK modulation；Wherein, K1 and K2 is positive integer, and K1+K2=K.
The sub-carrier selection mapping mode, including：Continue in each OFDM symbol of dispatching cycle In time, a subcarrier is selected in pre-assigned multiple subcarriers, by the modulation symbol sequence In a modulation symbol be mapped on the subcarrier；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier.For example, it is described Orthogonal sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
Or, the precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol in number is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then Sequence of the L length for obtaining for M is added.
In the present embodiment, modulation symbol sequence and the first information are obtained, the modulation symbol sequence includes Modulation symbol waiting for transmission, the first information includes following any one or its combination：Covering grade refers to Show information or precoding configured information or subcarrier distribution information；According to the first information and default mapping Mode, determines mapping mode corresponding with the first information in the default mapping mode；By the tune Symbol sebolic addressing processed is mapped on subcarrier according to the mapping mode, obtains signal sequence.Realize narrow Data are sent under different parameters with LTE Internet of things system configuration scene, so as to reduce the peak of sending signal Compare, and then save the energy consumption and cost of terminal, improve the power amplification efficiency of terminal.
Further, on the basis of above-described embodiment, it is described by the modulation symbol sequence according to described Mapping mode is mapped on subcarrier, after obtaining signal sequence, can also be included：
The signal sequence is carried out into Fourier inversion, signal to be sent is obtained.
On the basis of above-mentioned embodiment illustrated in fig. 1, the described default mapping mode of the present embodiment include with Lower any one or its combination：List carrier wave mapping mode, minority subcarrier maps mode, subcarrier choosing Select mapping mode or precoding mapping mode；The covering grade configured information includes：Depth covering grade, Strengthen covering grade or general covering grade.
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
According to the depth covering grade and the default mapping mode, determine that the mapping mode is described List carrier wave mapping mode；Or,
According to the enhancing covering grade and the default mapping mode, determine that the mapping mode is described Sub-carrier selection mapping mode.Or,
According to the general covering grade and the default mapping mode, determine that the mapping mode is described Minority subcarrier maps mode or the precoding mapping mode.
Specifically, it is described according to the general covering grade and the default mapping mode, it is determined that described reflect Mode is penetrated for the minority subcarrier maps mode or the precoding mapping mode, can also include to Few two kinds of implementations：
The first implementation, according to the subcarrier information is distributed, and determines that the mapping mode is described Minority subcarrier maps mode or the precoding mapping mode；
For example, the first threshold is less than or equal to according to available subcarrier number in the subcarrier distribution information Value P1, determines that the mapping mode is minority subcarrier maps mode；Distribute information according to the subcarrier Middle available subcarrier number is more than first threshold P1, determines that the mapping mode is precoding mapping mode； Wherein, P1 is positive integer, and 2≤P1≤4.
Second implementation, according to the precoding information configured information, determines that the mapping mode is The minority subcarrier maps mode or the precoding mapping mode.
For example, it is designated as not enabling according to the precoding configured information, determines the mapping mode For the minority subcarrier maps mode；It is designated as enabling according to the precoding configured information, determines institute Mapping mode is stated for the precoding mapping mode.
Fig. 2 is the list carrier wave mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention two, such as Fig. 2 It is shown, in this example, it is assumed that have terminal a, wherein, the covering grade that terminal a is received is designated as Depth is covered, then terminal a uses single subcarrier maps in each OFDM symbol in scheduled cycle Mode is mapped to a QPSK modulation symbol waiting for transmission on the subcarrier of one fixed position, such as Fig. 1 It is shown, it is mapped on the subcarrier of serial number 10.Obtain the signal sequence on frequency domain；Wherein, subcarrier 10 is exactly the available subcarrier that terminal a is distributed in current dispatching cycle；After terminal a is to mapping The signal sequence of frequency domain carries out Fourier inversion and obtains signal to be sent, and by the signal input to be sent To next processing unit.Due to carrying signal on only one of which subcarrier on frequency domain, therefore in Fu Time domain signal to be sent after leaf transformation with relatively low peak-to-average force ratio.
Fig. 3 is the sub-carrier selection mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention three, such as Shown in Fig. 3, the covering grade configured information that terminal b is received then is being scheduled to strengthen covering grade In the persistent period of each OFDM symbol in cycle, terminal b maps to be passed using sub-carrier selection mode A defeated modulation symbol.A subcarrier is selected i.e. in pre-assigned multiple subcarriers, and by one Individual modulation symbol waiting for transmission is mapped on the subcarrier；As shown in figure 3, terminal b is assigned with 4 sons Carrier wave, respectively subcarrier 11 arrive subcarrier 14, terminal according to information to be sent, from 4 subcarriers A subcarrier is selected to send qpsk modulation signal.For example, terminal is treated in first OFDM symbol The modulation symbol comprising 4 bit informations " 0100 " is sent, terminal b is according to two high-order bits " 01 " The 2nd subcarrier, i.e. subcarrier 12 are selected from 4 subcarriers, is then compared further according to two of low level Special " 00 " selects the modulation symbol of 1st quadrant to be mapped on subcarrier 12 from QPSK planispheres；Eventually End b carries out Fourier inversion to the signal sequence of the frequency domain after mapping and obtains signal to be sent, and will The signal input is to next processing unit.Due to carrying signal on only one of which subcarrier on frequency domain, because This signal to be sent of time domain after Fourier transformation has relatively low peak-to-average force ratio.
Fig. 4 is the minority sub-carrier selection mapping mode schematic diagram of the embodiment of data transmission method for uplink of the present invention four, As shown in figure 4, the covering grade configured information that terminal c is received is general covering grade, and distribute to The available subcarrier number of terminal c is not more than threshold value P1 set in advance；Or the covering that terminal c is received Class information is designated as general covering grade, and precoding configured information is not when enabling, then in scheduled week In each OFDM symbol of phase, terminal c maps described multiple treat using minority subcarrier maps mode Transmission modulation symbol, as shown in Figure 4；Such as threshold value P1=4 set in advance, distributes to the K=2 of terminal c Individual continuously available subcarrier, but the precoding configured information that such as terminal c is received is not to enable, then Terminal c first carries out discrete Fourier transform to the QPSK modulation symbols to be transmitted of K=2 input, obtains 2 frequency-region signals, and 2 frequency-region signals are mapped on the continuously available subcarrier in distributed 2, For example on subcarrier 15 and subcarrier 16.Terminal c carries out discrete to the signal sequence of the frequency domain after mapping Fourier inversion obtains the signal to be sent of time domain, and by the signal input to next processing unit. Due to only having minority subcarrier to carry signal on frequency domain, peak-to-average force ratio is still in the tolerance of terminal c. Also, terminal c can also adopt the method for back-off to send the signal to be sent.
Fig. 5 is the precoding schematic diagram of the employing pre-coding matrix of the embodiment of data transmission method for uplink of the present invention five, As shown in figure 5, the covering grade configured information that terminal d is received is general covering grade, and distribute to The available subcarrier number of terminal d is more than threshold value P1=4 set in advance；Or the covering that terminal d is received Grade configured information is general covering grade, and during precoding configured information enable, then in the scheduled cycle Each OFDM symbol in, terminal d maps described modulation symbol multiple to be transmitted using precoding mode Number, as shown in Figure 5；Such as threshold value P1=4 set in advance, distribute to terminal d M=32 is continuous Available subcarrier, but the precoding configured information that such as terminal d is received to enable, then terminal d is in quilt Modulation to be transmitted symbol in the persistent period of each OFDM symbol of dispatching cycle, to L=24 input Number discrete Fourier transform is first carried out, obtain 24 frequency-region signals, then to 24 frequency-region signals, It is 32 by be multiplied by the pre-coding matrix T that size set in advance is L*M=24*32 to be transformed to length Frequency-region signal, and the signal is mapped on 32 continuously available subcarriers, such as subcarrier 17 is to son Carrier wave 48；
Wherein, pre-coding matrix T has following form
Wherein, submatrix A and A ' be all size be (M-L) * (M-L) diagonal matrix, and son The inverted sequence arrangement each other of the element on element and submatrix A ' diagonal on matrix A diagonal, and for Element { a on submatrix A diagonal1,a2..., aM-LThere is following feature：0≤a1≤a2……≤aM-L ≤1.Submatrix B is the diagonal matrix that size is 2*L-M；
Fig. 6 is that the employing sequence of the embodiment of data transmission method for uplink of the present invention six carries out precoding schematic diagram, As shown in fig. 6, terminal d is also with by each modulation symbol in L=24 modulation symbols to be transmitted, The orthogonal or quasi orthogonal sequences that a length is M=32 are multiplied by respectively, are then 32 by this 24 length Addition of series after through discrete Fourier transform, obtain 32 frequency-region signals, and by this 32 letters Number it is mapped on the continuously available subcarrier in distributed 32 (subcarrier 17 arrives subcarrier 48)；
Wherein, precoded sequence has following features：
Sequence must be orthogonal or quasi orthogonal sequences；Sequence has constant modulus property；Sequence becomes through Fourier Change or Fourier inversion after remain permanent mode sequence；
Wherein, a kind of sequence for typically meeting These characteristics is exactly Zadoff-Chu sequence；
Terminal d carries out inverse discrete fourier transform and obtains treating for time domain to the signal sequence of the frequency domain after mapping The signal of transmission, and by the signal input to next processing unit.Due to by the way of precoding, and And (above-mentioned 32 available subcarriers only transmit 24 modulation symbols, there is 8 to introduce redundancy subcarrier Individual subcarrier is redundancy), the peak-to-average force ratio of the time-domain signal of terminal d is lowered.
Terminal d carries out precoding using sequence can also another kind of implementation：Terminal d is also passing through To each modulation symbol in L=24 modulation symbol to be transmitted, a length is multiplied by respectively for M=32 Orthogonal or quasi orthogonal sequences, then the direct addition of the sequence that this 24 length are 32 is obtained into pending The signal for sending, and by the signal input to next processing unit.
Wherein, precoded sequence has following features：
Sequence must be orthogonal or quasi orthogonal sequences；Sequence has constant modulus property；Sequence becomes through Fourier Change or Fourier inversion after remain permanent mode sequence；
Wherein, a kind of sequence for typically meeting These characteristics is exactly Zadoff-Chu sequence；
On the basis of above-described embodiment, the default mapping mode includes following any one or its combination： List carrier wave mapping mode, minority subcarrier maps mode, sub-carrier selection mapping mode or precoding reflect Penetrate mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
It is designated as not enabling according to the default mapping mode and the precoding configured information, it is determined that described Mapping mode is the list carrier wave mapping mode or the sub-carrier selection mapping mode；Or
It is designated as enabling according to the default mapping mode and the precoding configured information, it is determined that described reflect Mode is penetrated for the precoding mapping mode.
Specifically, it is described to be designated as not making according to the default mapping mode and the precoding configured information Can, the mapping mode is determined for the list carrier wave mapping mode or the sub-carrier selection mapping side Formula, also includes：
1 is equal to according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The sub-carrier selection mapping mode.
For example, the present embodiment and the difference of embodiment illustrated in fig. 2 are default mapping mode bag Include：Single subcarrier maps mapping, sub-carrier selection mapping mode and precoding mapping mode.Also, root Select which kind of mapping mode sends modulation symbol waiting for transmission according to precoding configured information and subcarrier distribution information Number sequence.Specifically, in this example, it is assumed that there is tri- kinds of terminals of e, f, g, wherein terminal e is received To precoding information be designated as not enabling, and terminal E available subcarrier number is equal to 1, then terminal e Using list carrier wave mapping mode；Concrete grammar is similar with terminal a in embodiment illustrated in fig. 2；
The precoding configured information that wherein terminal f is received is not to enable, and the available subcarrier of terminal F Number is more than 1, then terminal f adopts sub-carrier selection mode；The terminal b class of concrete grammar and embodiment 1 Seemingly；
To enable, then terminal g adopts precoding mode to the precoding configured information that wherein terminal g is received； Concrete grammar is similar with terminal d in embodiment illustrated in fig. 2.
On the basis of above-described embodiment, the default mapping mode includes following any one or its group Close：List carrier wave mapping mode, minority subcarrier maps mode and precoding mapping mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in subcarrier distribution information is stated, and less than or equal to Second Threshold P2, determines that the mapping mode is the minority subcarrier maps mode；
It is more than the Second Threshold P2 according to available subcarrier number in subcarrier distribution information is stated, determines institute Mapping mode is stated for the precoding mapping mode, wherein, P2 is positive integer, and 2≤P2≤4.
For example, the present embodiment is that default mapping mode includes with the difference of embodiment illustrated in fig. 1： Single subcarrier maps, minority subcarrier maps mode and precoding mode.Also, it is according to subcarrier point Select which kind of mapping mode sends modulation symbol sequence waiting for transmission with information.Specifically, in the present embodiment In, it is assumed that the number of sub carrier wave for having tri- kinds of terminals of h, i, j, wherein terminal i distribution is equal to 1, then terminal i Using list carrier wave mapping mode；Concrete grammar is similar with terminal a in embodiment 1；
Wherein, the sub-carrier number of terminal i distribution is more than 1 and threshold value P2=4 no more than set in advance, then Terminal i is by the way of minority subcarrier maps；Concrete grammar is similar with terminal c in embodiment 1；
Wherein, the sub-carrier number of terminal j distribution is more than threshold value P2=4 set in advance, then terminal j is adopted Precoding mode；Concrete grammar is similar with terminal d in Fig. 2 embodiments.
On the basis of above-described embodiment, the default mapping mode includes following any one or its combination： List carrier wave mapping mode, sub-carrier selection mapping mode and precoding mapping mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 and less than or equal to the 3rd threshold value according to available subcarrier number in subcarrier distribution information is stated P3, determines that the mapping mode is sub-carrier selection mapping mode；
It is more than the 3rd threshold value P3 according to available subcarrier number in subcarrier distribution information is stated, determines institute It is precoding mapping mode to state mapping mode, wherein, P3 is the positive integer more than 1.
For example, specifically, in this example, it is assumed that there is tri- kinds of terminals of o, p, q, wherein eventually The number of sub carrier wave of end o distribution is equal to 1, then terminal o adopts list carrier wave mapping mode；Concrete grammar with Terminal a in embodiment 1 is similar to；
Wherein, the sub-carrier number of terminal p distribution is more than 1 and threshold value P3=8 no more than set in advance, then Terminal p is by the way of sub-carrier selection mapping；Concrete grammar shows the terminal b class in embodiment with Fig. 3 Seemingly；
Wherein, the sub-carrier number of terminal j distribution is more than threshold value P3=8 set in advance, then terminal j is adopted Precoding mode；Concrete grammar is similar with terminal d in embodiment illustrated in fig. 4.
It should be noted that the Fourier inversion in Fig. 2 to embodiment illustrated in fig. 6 can be discrete Fu In leaf inverse transformation (Inverse Discrete Fourier Transform, abbreviation IDFT), or, quick Fu In leaf transformation inverse transformation (Fast Fourier Transform, abbreviation FFT).
Fig. 7 is the structural representation of the embodiment of data sending device of the present invention, as shown in fig. 7, this It is bright according to dispensing device, including：First acquisition module 71, the acquisition module 73 of determining module 72 and second. Wherein,
First acquisition module 71, for obtaining modulation symbol sequence and the first information, the modulation symbol sequence Row include modulation symbol waiting for transmission, and the first information includes following any one or its combination：Cover Grade configured information or precoding configured information or subcarrier distribution information；
Determining module 72, for according to the first information and default mapping mode, determining that described presetting is reflected Penetrate mapping mode corresponding with the first information in mode；
Second acquisition module 73, for the modulation symbol sequence to be mapped to into son according to the mapping mode On carrier wave, signal sequence is obtained.
In the present embodiment, modulation symbol sequence and the first information are obtained, the modulation symbol sequence includes Modulation symbol waiting for transmission, the first information includes following any one or its combination：Covering grade refers to Show information or precoding configured information or subcarrier distribution information；According to the first information and default mapping Mode, determines mapping mode corresponding with the first information in the default mapping mode；By the tune Symbol sebolic addressing processed is mapped on subcarrier according to the mapping mode, obtains signal sequence.Realize narrow Data are sent under different parameters with LTE Internet of things system configuration scene, so as to reduce the peak of sending signal Compare, and then save the energy consumption and cost of terminal, improve the power amplification efficiency of terminal.
On the basis of above-described embodiment, second acquisition module 73 is additionally operable to the signal sequence Fourier inversion is carried out, signal to be sent is obtained.
On the basis of above-described embodiment, the default mapping mode includes following any one or its group Close：List carrier wave mapping mode, minority subcarrier maps mode, sub-carrier selection mapping mode prelist Code mapping mode；
The covering grade configured information includes：Depth covering grade, enhancing covering grade or general covering Grade；
The determining module 72, specifically for according to the depth covering grade and the default mapping mode, Determine that the mapping mode is the list carrier wave mapping mode；Or, according to the enhancing covering grade With the default mapping mode, determine that the mapping mode is the sub-carrier selection mapping mode.Or, According to the general covering grade and the default mapping mode, determine that the mapping mode is the minority Subcarrier maps mode or the precoding mapping mode.
On the basis of above-described embodiment, the determining module 72, specifically for according to the subcarrier point With information, it is that the minority subcarrier maps mode or the precoding map to determine the mapping mode Mode；Or, according to the precoding information configured information, determine that the mapping mode is the minority Subcarrier maps mode or the precoding mapping mode.
On the basis of above-described embodiment, the determining module 72, specifically for according to the subcarrier point First threshold P1 is less than or equal to available subcarrier number in information, the mapping mode is determined for minority Carrier wave mapping mode；Or, according to available subcarrier number in the subcarrier distribution information more than described the One threshold value P1, determines that the mapping mode is precoding mapping mode；Wherein, P1 is positive integer, and 2 ≤P1≤4。
Further, on the basis of above-described embodiment, including：The determining module 72, specifically for It is designated as not enabling according to the precoding configured information, determines the mapping mode and carry for minority Ripple mapping mode；Or, it is designated as enabling according to the precoding configured information, determine the mapping side Formula is the precoding mapping mode.
Further, on the basis of above-described embodiment, including：The default mapping mode includes following Any one or its combination：List carrier wave mapping mode, minority subcarrier maps mode, sub-carrier selection Mapping mode or precoding mapping mode；
The determining module 72, is additionally operable to according to the default mapping mode and the precoding configured information It is designated as not enabling, determines the mapping mode for the list carrier wave mapping mode or the subcarrier Choose for user mode；Or, it is designated as according to the default mapping mode and the precoding configured information Enable, determine that the mapping mode is the precoding mapping mode.
Further, on the basis of above-described embodiment, including：The determining module 72, is additionally operable to root 1 is equal to according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is the list Subcarrier maps mode；Or, it is more than 1 according to available subcarrier number in the subcarrier distribution information, Determine that the mapping mode is the sub-carrier selection mapping mode.
Further, on the basis of above-described embodiment, including：The default mapping mode includes following Any one or its combination：List carrier wave mapping mode, minority subcarrier maps mode and precoding mode；
The determining module 72, is additionally operable to be equal to according to stating available subcarrier number in subcarrier distribution information 1, determine that the mapping mode is the list carrier wave mapping mode；Can in subcarrier distribution information according to stating It is more than 1 with number of sub carrier wave, and less than or equal to Second Threshold P2, determines that the mapping mode is described Minority subcarrier maps；It is more than second threshold according to available subcarrier number in subcarrier distribution information is stated Value P2, determines the mapping mode for the precoding mapping mode, wherein, P2 is positive integer, and 2 ≤P2≤4。
Further, on the basis of above-described embodiment, the default mapping mode includes following any one Item or its combination：List carrier wave mapping mode, sub-carrier selection mapping mode and precoding mapping mode；
The determining module 72, is additionally operable to be equal to according to stating available subcarrier number in subcarrier distribution information 1, determine that the mapping mode is the list carrier wave mapping mode；Can in subcarrier distribution information according to stating With number of sub carrier wave more than 1 and less than or equal to the 3rd threshold value P3, determine that the mapping mode is subcarrier Choose for user mode；It is more than the 3rd threshold value according to available subcarrier number in subcarrier distribution information is stated P3, determines that the mapping mode is precoding mapping mode, wherein, P3 is the positive integer more than 1.
Further, on the basis of above-described embodiment, the list carrier wave mapping mode, including： In the persistent period of each orthogonal frequency division multiplex OFDM symbol of dispatching cycle, by the modulation symbol sequence A modulation symbol is mapped on an available subcarrier of fixed position in the dispatching cycle in row；Or Person,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；Wherein, the modulation system of the K modulation symbol can be with identical, it is also possible to different；
The modulation system of the K modulation symbol can be with difference, including in the K modulation symbol K1 modulation symbol is QPSK modulation, and K2 modulation symbol is BPSK modulation；Wherein, K1 and K2 is positive integer, and K1+K2=K.
The sub-carrier selection mapping mode, including：Continue in each OFDM symbol of dispatching cycle In time, a subcarrier is selected in pre-assigned multiple subcarriers, by the modulation symbol sequence In a modulation symbol be mapped on the subcarrier；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier.Or,
The precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length for M sequence be added.
Further, including：The orthogonal sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
Although disclosed herein embodiment as above, described content is only to readily appreciate the present invention And the embodiment for adopting, it is not limited to the present invention.Technology people in any art of the present invention Member, without departing from disclosed herein spirit and scope on the premise of, can be in the form implemented and thin Any modification and change, but the scope of patent protection of the present invention are carried out on section, still must be with appended right The scope that claim is defined is defined.

Claims (30)

1. a kind of data transmission method for uplink, it is characterised in that include：
Modulation symbol sequence and the first information are obtained, the modulation symbol sequence includes modulation symbol waiting for transmission Number, the first information includes following any one or its combination：Covering grade configured information or precoding Configured information or subcarrier distribution information；
According to the first information and default mapping mode, determine in the default mapping mode with described The corresponding mapping mode of one information；
The modulation symbol sequence is mapped on subcarrier according to the mapping mode, signal sequence is obtained Row.
2. method according to claim 1, it is characterised in that described by the modulation symbol sequence It is mapped on subcarrier according to the mapping mode, after obtaining signal sequence, is also included：
The signal sequence is carried out into Fourier inversion, signal to be sent is obtained.
3. method according to claim 1 and 2, it is characterised in that the covering grade indicates letter Breath includes：Depth covering grade, enhancing covering grade or general covering grade.
4. the method according to any one of claim 1-3, it is characterised in that the default mapping side Formula includes following any one or its combination：List carrier wave mapping mode, minority subcarrier maps mode, Sub-carrier selection mapping mode or precoding mapping mode.
5. the method according to claim 1-4 any one, described according to the first information and pre- If mapping mode, mapping mode corresponding with the first information in the default mapping mode is determined, wrap Include：
According to the depth covering grade and the default mapping mode, determine that the mapping mode is described List carrier wave mapping mode；Or,
According to the enhancing covering grade and the default mapping mode, determine that the mapping mode is described Sub-carrier selection mapping mode；Or,
According to the general covering grade and the default mapping mode, determine that the mapping mode is described Minority subcarrier maps mode or the precoding mapping mode.
6. method according to claim 5, it is characterised in that include：It is described according to described general Covering grade and the default mapping mode, determine the mapping mode for minority subcarrier maps mode or Person's precoding mapping mode, also includes：
Distribute information according to the subcarrier, determine that the mapping mode is the minority subcarrier maps side Formula or the precoding mapping mode；Or,
According to the precoding information configured information, determine that the mapping mode reflects for the minority subcarrier Penetrate mode or the precoding mapping mode.
7. method according to claim 6, it is characterised in that include：It is described according to the sub- load Information is matched somebody with somebody in wavelength-division, determines the mapping mode for minority subcarrier maps mode or precoding mapping mode, Including：
First threshold P1 is less than or equal to according to available subcarrier number in the subcarrier distribution information, it is determined that The mapping mode is minority subcarrier maps mode；
First threshold P1 is more than according to available subcarrier number in the subcarrier distribution information, institute is determined Mapping mode is stated for precoding mapping mode；Wherein, P1 is positive integer, and 2≤P1≤4.
8. method according to claim 6, it is characterised in that include：Prelist described in the basis Code Information Indication information, determines that the mapping mode is the minority subcarrier maps mode or described pre- Coding mapping mode, including：
It is designated as not enabling according to the precoding configured information, determines that the mapping mode is the minority Subcarrier maps mode；
It is designated as enabling according to the precoding configured information, determines that the mapping mode is the precoding Mapping mode.
9. the method according to any one of claim 1-3, it is characterised in that include：It is described default Mapping mode includes following any one or its combination：List carrier wave mapping mode, minority subcarrier maps Mode, sub-carrier selection mapping mode or precoding mapping mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
It is designated as not enabling according to the default mapping mode and the precoding configured information, it is determined that described Mapping mode is the list carrier wave mapping mode or the sub-carrier selection mapping mode；Or
It is designated as enabling according to the default mapping mode and the precoding configured information, it is determined that described reflect Mode is penetrated for the precoding mapping mode.
10. method according to claim 9, it is characterised in that include：It is described according to described pre- If mapping mode and the precoding configured information are designated as not enabling, determine that the mapping mode is described List carrier wave mapping mode or the sub-carrier selection mapping mode, also include：
1 is equal to according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in the subcarrier distribution information, determines that the mapping mode is The sub-carrier selection mapping mode.
11. methods according to any one of claim 1-3, it is characterised in that include：It is described pre- If mapping mode includes following any one or its combination：List carrier wave mapping mode, minority subcarrier reflect Penetrate mode and precoding mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 according to available subcarrier number in subcarrier distribution information is stated, and less than or equal to Second Threshold P2, determines that the mapping mode is the minority subcarrier maps；
It is more than the Second Threshold P2 according to available subcarrier number in subcarrier distribution information is stated, determines institute Mapping mode is stated for the precoding mapping mode, wherein, P2 is positive integer, and 2≤P2≤4.
12. methods according to any one of claim 1-3, it is characterised in that include：It is described pre- If mapping mode includes following any one or its combination：List carrier wave mapping mode, sub-carrier selection reflect Penetrate mode and precoding mapping mode；
It is described according to the first information and default mapping mode, determine in the default mapping mode with institute The corresponding mapping mode of the first information is stated, including：
1 is equal to according to available subcarrier number in subcarrier distribution information is stated, determines that the mapping mode is institute State list carrier wave mapping mode；
It is more than 1 and less than or equal to the 3rd threshold value according to available subcarrier number in subcarrier distribution information is stated P3, determines that the mapping mode is sub-carrier selection mapping mode；
It is more than the 3rd threshold value P3 according to available subcarrier number in subcarrier distribution information is stated, determines institute It is precoding mapping mode to state mapping mode, wherein, P3 is the positive integer more than 1.
13. methods according to any one of claim 1-12, it is characterised in that include：
The list carrier wave mapping mode, including：In each orthogonal frequency division multiplex OFDM of dispatching cycle In the persistent period of symbol, a modulation symbol in the modulation symbol sequence is mapped to into the scheduling week On one available subcarrier of interim fixed position；Or,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；- sub-carrier selection the mapping mode, including：In each OFDM symbol of dispatching cycle Persistent period in, in pre-assigned multiple subcarriers select a subcarrier, by it is described modulation accord with A modulation symbol is mapped on the subcarrier in number sequence；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier；Or,
The precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length for M sequence be added.
14. methods according to claim 13, it is characterised in that include, the K modulation symbol Number, including K1 QPSK modulation symbol, and K2 BPSK modulation symbol, wherein, K1 and K2 For positive integer, and K1+K2=K.
15. methods according to claim 13 or 14, it is characterised in that include：It is described orthogonal Sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
16. a kind of data sending devices, it is characterised in that include：
First acquisition module, for obtaining modulation symbol sequence and the first information, the modulation symbol sequence Including modulation symbol waiting for transmission, the first information includes following any one or its combination：Cover etc. Level configured information or precoding configured information or subcarrier distribution information；
Determining module, for according to the first information and default mapping mode, determining the default mapping Mapping mode corresponding with the first information in mode；
Second acquisition module, for the modulation symbol sequence to be mapped to into sub- load according to the mapping mode On ripple, signal sequence is obtained.
17. devices according to claim 16, it is characterised in that second acquisition module, also For the signal sequence to be carried out into Fourier inversion, signal to be sent is obtained.
18. devices according to claim 16 or 17, it is characterised in that the covering grade refers to Show that information includes：Depth covering grade, enhancing covering grade or general covering grade.
19. devices according to any one of claim 16-18, it is characterised in that described presetting is reflected Mode is penetrated including following any one or its combination：List carrier wave mapping mode, minority subcarrier maps side Formula, sub-carrier selection mapping mode or precoding mapping mode.
20. devices according to claim 16-19 any one, it is characterised in that the determination mould Block, specifically for according to the depth covering grade and the default mapping mode, determining the mapping side Formula is the list carrier wave mapping mode；Or, according to the enhancing covering grade and the default mapping Mode, determines that the mapping mode is the sub-carrier selection mapping mode；Or, typically covered according to described Lid grade and the default mapping mode, determine that the mapping mode is the minority subcarrier maps mode Or the precoding mapping mode.
21. devices according to claim 20, it is characterised in that include：The determining module, Specifically for distributing information according to the subcarrier, determine that the mapping mode reflects for the minority subcarrier Penetrate mode or the precoding mapping mode；Or, according to the precoding information configured information, really The fixed mapping mode is the minority subcarrier maps mode or the precoding mapping mode.
22. devices according to claim 21, it is characterised in that include：The determining module, Specifically for being less than or equal to first threshold P1 according to available subcarrier number in the subcarrier distribution information, Determine that the mapping mode is minority subcarrier maps mode；Or, distribute information according to the subcarrier Middle available subcarrier number is more than first threshold P1, determines that the mapping mode is precoding mapping mode； Wherein, P1 is positive integer, and 2≤P1≤4.
23. devices according to claim 21, it is characterised in that include：The determining module, Specifically for being designated as not enabling according to the precoding configured information, determine that the mapping mode is described Minority subcarrier maps mode；Or, it is designated as enabling according to the precoding configured information, determine institute Mapping mode is stated for the precoding mapping mode.
24. devices according to any one of claim 16-18, it is characterised in that include：It is described Default mapping mode includes following any one or its combination：List carrier wave mapping mode, minority subcarrier Mapping mode, sub-carrier selection mapping mode or precoding mapping mode；
The determining module, is additionally operable to：According to the default mapping mode and the precoding configured information It is designated as not enabling, determines the mapping mode for the list carrier wave mapping mode or the subcarrier Choose for user mode；Or, it is designated as according to the default mapping mode and the precoding configured information Enable, determine that the mapping mode is the precoding mapping mode.
25. devices according to claim 24, it is characterised in that include：The determining module, It is additionally operable to be equal to 1 according to available subcarrier number in the subcarrier distribution information, determines the mapping mode For the list carrier wave mapping mode；Or, according to available subcarrier number in the subcarrier distribution information Mesh is more than 1, determines that the mapping mode is the sub-carrier selection mapping mode.
26. devices according to any one of claim 16-18, it is characterised in that include：It is described Default mapping mode includes following any one or its combination：List carrier wave mapping mode, minority subcarrier Mapping mode and precoding mode；
The determining module, is additionally operable to be equal to 1 according to stating in subcarrier distribution information available subcarrier number, Determine that the mapping mode is the list carrier wave mapping mode；Can use according to stating in subcarrier distribution information Number of sub carrier wave is more than 1, and less than or equal to Second Threshold P2, determines that the mapping mode is described few Number subcarrier maps；It is more than the Second Threshold according to available subcarrier number in subcarrier distribution information is stated P2, determines the mapping mode for the precoding mapping mode, wherein, P2 is positive integer, and 2≤ P2≤4。
27. devices according to any one of claim 16-18, it is characterised in that include：It is described Default mapping mode includes following any one or its combination：List carrier wave mapping mode, sub-carrier selection Mapping mode and precoding mapping mode；
The determining module, is additionally operable to be equal to 1 according to stating in subcarrier distribution information available subcarrier number, Determine that the mapping mode is the list carrier wave mapping mode；Can use according to stating in subcarrier distribution information Number of sub carrier wave determines the mapping mode for subcarrier choosing more than 1 and less than or equal to the 3rd threshold value P3 Select mapping mode；It is more than the 3rd threshold value P3 according to available subcarrier number in subcarrier distribution information is stated, Determine that the mapping mode is precoding mapping mode, wherein, P3 is the positive integer more than 1.
28. devices according to any one of claim 16-27, it is characterised in that include：
The list carrier wave mapping mode, including：In each orthogonal frequency division multiplex OFDM of dispatching cycle In the persistent period of symbol, a modulation symbol in the modulation symbol sequence is mapped to into the scheduling week On one available subcarrier of interim fixed position；Or,
The minority subcarrier maps mode, including：Continue in each OFDM symbol of dispatching cycle In time, K modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, will be obtained K frequency-region signal be mapped to K continuously can with subcarrier, wherein, K is positive integer, and 2 ≤K≤4；The sub-carrier selection mapping mode, including：In each OFDM symbol of dispatching cycle In persistent period, a subcarrier is selected in pre-assigned multiple subcarriers, by the modulation symbol A modulation symbol is mapped on the subcarrier in sequence；
The precoding mapping mode, including：In the persistent period of each OFDM symbol of dispatching cycle It is interior, L modulation symbol in the modulation symbol sequence is carried out into discrete Fourier transform, the L that will be obtained Individual frequency-region signal is the pre-coding matrix of L*M by size, then M frequency-region signal of acquisition is mapped to On M continuously available subcarriers, wherein L, M is positive integer, and M >=L；Or
The precoding mapping mode, including：By in L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length be added for the sequence of M, the conjunction number that will add up obtains M by discrete Fourier transform Frequency-region signal, the M signal is mapped on M continuously available subcarrier；Or,
The precoding mapping mode, including by L modulation symbol in the modulation symbol sequence Each modulation symbol is multiplied by respectively the orthogonal sequence or quasi orthogonal sequences that a length is M, then will obtain L length for M sequence be added.
29. devices according to claim 28, it is characterised in that include, the K modulation symbol Number, including K1 QPSK modulation symbol, and K2 BPSK modulation symbol, wherein, K1 and K2 For positive integer, and K1+K2=K.
30. devices according to claim 28 or 29, it is characterised in that include：It is described orthogonal Sequence or quasi orthogonal sequences, including：Zadoff-Chu sequence.
CN201510753379.8A 2015-11-06 2015-11-06 Data sending method and data sending device Pending CN106685619A (en)

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