CN106936752A

CN106936752A - Signal processing method and device

Info

Publication number: CN106936752A
Application number: CN201511030401.2A
Authority: CN
Inventors: 陈泽为; 戴博; 许进; 徐俊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2017-07-07
Also published as: WO2017114038A1

Abstract

The invention provides a kind of signal processing method and device, wherein, the method includes：First transmission node selects data processing method according to the first preset rules, wherein, the first preset rules are to select data processing method according at least one of：Modulation system, number of sub carrier wave, indication signaling, indication signal, terminal capability；First transmission node carries out processing the frequency-region signal for obtaining being mapped on subcarrier according to the data processing method that the first preset rules are selected to bit sequence, and frequency-region signal process obtains time-domain signal to be sent.By the present invention, solving the problems, such as the SC-FDMA technologies of current LTE and LTE-A in correlation technique can not meet NB-IOT terminal-pair peak-to-average force ratio requirements.

Description

Signal processing method and device

Technical field

The present invention relates to the communications field, in particular to a kind of signal processing method and device.

Background technology

Peak-to-average force ratio (Peak-to-Average Ratio, referred to as PAR) is also referred to as peak-to-average power ratio (Peak-to-Average Power Ratio, referred to as PAPR), it is the ratio between peak power and mean power of signal.The peak-to-average force ratio of sending signal should be maintained at one Individual relatively low level.Because too high peak-to-average force ratio may cause power amplifier to be operated in nonlinear area, so as to draw Play distortion and the band outward leakage of signal.In order to solve this problem, emitter would generally be using the side of back-off in correlation technique Method, that is, allow the power amplifier of transmitter to be operated in the mean power output level more much lower than peak power.Though back-off So it is avoided that distorted signals, but the efficiency of power amplifier can be reduced, causes the waste of energy.Another solution is to adopt With the High Linear power amplifier of more Larger Dynamic scope.But such power amplifier is often relatively costly, expensive, one As only used in the base station side of GSM, for the transmission of downlink data；And in end side, because cost is limited, only Can be used to send upstream data using less expensive power amplifier.Therefore have to reduce the peak-to-average force ratio of up-link sending signal.

The uplink of broadband Long Term Evolution (Long Term Evolution, referred to as LTE) and LTE-A standards in correlation technique Employed in road single-carrier frequency division multiple access (Single-Carrier Frequency-Division Multiple Access, referred to as SC-FDMA) technology.In SC-FDMA systems, each user terminal uses discrete Fourier transform (Discrete Fourier Transform, referred to as DFT) matrix reduces the peak-to-average force ratio of transmission signal as pre-coding matrix.

With the development of technology of Internet of things, arrowband Internet of Things based on LTE technologies (Narrow Band Internet of Thing, Referred to as NB-IOT) application is paid attention to, and is smaller transmission bandwidth the characteristics of arrowband Internet of Things, generally only 200kHz； And the lower energy consumption of demanding terminal and cost.

However, the SC-FDMA technologies of LTE and LTE-A can not meet the requirement of NB-IOT terminal-pair peak-to-average force ratios at present, For the above mentioned problem in correlation technique, not yet there is effective solution at present.

The content of the invention

The invention provides a kind of signal processing method and device, at least to solve in correlation technique LTE's and LTE-A at present SC-FDMA technologies can not meet the problem of NB-IOT terminal-pair peak-to-average force ratio requirements.

According to an aspect of the invention, there is provided a kind of signal processing method, including：First transmission node is default according to first Rule selection data processing method, wherein, first preset rules are to select the data processing side according at least one of Formula：Modulation system, number of sub carrier wave, indication signaling, indication signal, terminal capability；First transmission node is according to first The data processing method of preset rules selection carries out processing the frequency-region signal for obtaining being mapped on subcarrier to bit sequence, and to institute State frequency-region signal and process and obtain time-domain signal to be sent.

Further, the data processing method includes at least one of：Mode 1：In F1 bit of the bit sequence F2 bit obtains 1 frequency-region signal through ovennodulation, and 1 frequency-region signal is mapped on F3 the 1 of available subcarrier, Wherein, F1-F2 bit in F1 bit of the bit sequence in addition to the F2 bit is used to indicate 1 son Position of the carrier wave in F3 available subcarrier；Wherein, F1, F2, F3 are positive integer, and F2<F1, F3>1；Mode 2：The bit sequence is mapped on phase-shift keying (PSK) PSK planisphere modulation symbols, K frequency-region signal is obtained, and by the K Individual frequency-region signal is mapped on K subcarrier, wherein, each described modulation symbol is only carried less than log2 (M) individual bit information, M is PSK planisphere constellation point numbers, and the K is positive integer；Mode 3：F1 bit modulation of the bit sequence obtains L Individual modulation symbol, and the sequence 1 that discrete Fourier transform obtains L symbol composition is carried out to L modulation symbol；To the sequence Frequency-region signal of the L symbol of row 1 after size set in advance is transformed to K precoding for the pre-coding matrix of L*K； The K frequency-region signal is mapped on K continuously available subcarrier；Wherein L, K is positive integer, and K >=L；Mode 4：The bit sequence is mapped to the modulation symbol sequence specified in specified modulation symbol sebolic addressing set and obtains the K frequency domain letter Number, and the K frequency-region signal is mapped on K subcarrier, the K is positive integer；Mode 5：The bit sequence F2 bit classical prescription Formula X treatment in F1 bit obtains K frequency-region signal；The X is positive integer；By described K frequency Domain signal is mapped on the F3 K of available subcarrier, wherein, the F2 bit is removed in F1 bit of the bit sequence Outside F1-F2 bit be used for indicate position of the K subcarrier in F3 available subcarrier；Wherein, F1, F2, F3, K are positive integer, and F2<F1, F3>K；Mode 6：Time domain is carried out before pulse-shaping filtering is carried out and/or frequency domain adds Window overlap-add procedure, the time domain and/or window adding in frequency domain superposition processing method purpose are the PAPR for reducing time-domain signal；Mode 7： According to the method for the up SC-OFDM of LTE Rel-12 versions, K frequency-region signal is obtained by the bit sequence, and K Frequency-region signal is mapped on K subcarrier.

Further, the mode 2 and the mode 4 also include：Discrete Fourier transform is carried out to the K frequency-region signal The new K frequency-region signal is obtained, then carries out subcarrier maps.

Further, the indication signaling includes：The signaling for selecting data processing method that second transmission node sends.

Further, the indication signaling is used to indicate the data processing method of one below：Mode 7, mode X1, wherein, The X1 is any positive integer in 1 to 6.

Further, the indication signal includes at least one of：First transmission node is sent out in Physical Random Access Channel The data processing method used during the number of delivering letters；It is corresponding with the negative response nack message that first transmission node is received The data processing method that is used of data that sends of first transmission node.

Further, included according to indication signal selection data processing method：Select first transmission node physics with Machine accesses the data processing method that channel sending signal is used；The negative response that selection is received with first transmission node Corresponding first transmission node of nack message sends the data processing method that data are used.

Further, at least one of is included according to the number of sub carrier wave selection data processing method：According to subcarrier Data processing method described in the odd even Sexual behavior mode of number；The data processing method is selected according to sub-carrier number size.

Further, included according to the sub-carrier number purpose parity selection data processing method：When sub-carrier number is odd number, Data processing method selection data processing method according to even number situation；When sub-carrier number is even number, selection mode 1, group is carried When wave number is odd number, selection mode 7；When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, selection Planisphere and subcarrier Joint Mapping mode.

Further, when sub-carrier number is odd number, data processing method is included by the data processing method of even number situation： When the sub-carrier number of distribution is even number, selection mode X2 is processed the bit sequence；When the sub-carrier number of distribution is strange During number, select described 5 pairs of bit sequences of mode processed and the mode 5 described in X=X2；The X2 is for just Integer.

Further, at least one of is included according to the sub-carrier number size selection data processing method：Work as subcarrier When number is less than or equal to Nsc1, selection mode X3；Otherwise select the mode 7；When sub-carrier number is less than or equal to Nsc2, choosing Select the mode 6；The mode 6 is not selected otherwise；When sub-carrier number is equal to 1, or frequency-region signal only one of which non-zero signal When, selection mode 6；The mode 6 is not selected otherwise；When the mode 1 is selected, simultaneous selection mode 6；Wherein, institute It is any positive integer in 1 to 6 to state X3, and Nsc1, Nsc2 are the positive integer more than or equal to 1.

Further, the terminal capability includes：Support the first terminal ability using the mode 7, support described in use The second terminal ability of mode X4, the X4 is any positive integer in 1 to 6.

Further, the mode for selecting the data processing method according to the modulation system includes at least one of：Work as use During at least one of QPSK QPSK, 8 phase-shift keying (PSK) 8-PSK modulation system, the ratio of mode 3 pairs is selected Special sequence is processed；When using binary phase shift keying BPSK modulation systems, select the mode 1, the mode 2, A kind of mode in the mode 4, the mode 5, the mode 6 is processed the bit sequence.

Further, the signal processing method includes：The data processing method is selected according to number of sub carrier wave and modulation system.

Further, the data processing method is selected including working as sub-carrier number equal to 2 according to number of sub carrier wave and modulation system, and When modulation system is BPSK, the mode 6 is selected.

Further, select the data processing method also including at least one of according to the number of sub carrier wave：Work as subcarrier When number is 2 positive integer power, selection mode 1；Otherwise selection mode 7 or mode 6；When sub-carrier number is less than or equal to Nsc3 When, data processing method is selected according to sub-carrier number purpose parity；Otherwise select the mode 7；Wherein, Nsc3 be more than Positive integer equal to 1.

According to another aspect of the present invention, there is provided a kind of signal processing apparatus, the first transmission node side is applied to, including： Selecting module, for selecting data processing method according to the first preset rules, wherein, first preset rules are according to following At least one the selection data processing method：Modulation system, number of sub carrier wave, indication signaling, indication signal, terminal capability； Processing module, the data processing method for being selected according to the first preset rules to bit sequence process and obtains being mapped to sub- load Frequency-region signal on ripple, and the frequency-region signal process obtain time-domain signal to be sent.

Further, the mode 2, the mode 4 also includes：Discrete Fourier transform is carried out to the K frequency-region signal The new K frequency-region signal is obtained, then carries out subcarrier maps.

Further, when data processing method is selected according to the indication signal, the selecting module includes：First choice list Unit, for the data processing method for selecting first transmission node to be used in Physical Random Access Channel sending signal；Second Select unit, negative response nack message for selecting with first transmission node is received is corresponding described first to be passed Defeated node sends the data processing method that data are used.

Further, when the data processing method is selected according to the number of sub carrier wave, the selecting module includes：3rd Select unit, for selecting the data processing method according to sub-carrier number purpose parity；4th select unit, for basis Sub-carrier number size selects the data processing method.

Further, the 3rd select unit, is additionally operable at least one of：

When sub-carrier number is odd number, the data processing method selection data processing method according to even number situation；

When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, selection mode 7；

When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, selects planisphere and subcarrier Joint Mapping Mode.

Further, the 3rd select unit, is additionally operable to when the sub-carrier number of distribution is even number, and selection mode X2 is to described Bit sequence is processed；When the sub-carrier number of distribution is odd number, described 5 pairs of bit sequences of mode are selected to process And X=X2 described in the mode 5；The X2 is positive integer.

Further, when the data processing method is selected according to the sub-carrier number size, the selecting module includes：The Five select units, for when sub-carrier number be less than or equal to Nsc1 when, selection mode X3；Otherwise select the mode 7；6th choosing Unit is selected, for when sub-carrier number is less than or equal to Nsc2, selecting the mode 6；The mode 6 is not selected otherwise；7th Select unit, for being equal to 1 when sub-carrier number, or during frequency-region signal only one of which non-zero signal, selects the mode 6；It is no The mode 6 is not selected then；8th select unit, for when select the mode 1 when, mode 6 described in simultaneous selection；Wherein, The X3 is any positive integer in 1 to 6, and Nsc1, Nsc2 are the positive integer more than or equal to 1.

Further, when the data processing method is selected according to the modulation system, the selecting module includes：9th choosing Unit, for when using at least one of QPSK QPSK, 8 phase-shift keying (PSK) 8-PSK modulation system, selecting institute 3 pairs of bit sequences of mode are stated to process；Tenth select unit, for being modulated when using binary phase shift keying BPSK During mode, the one kind in the mode 1, the mode 2, the mode 4, the mode 5, the mode 6 is selected to institute Bit sequence is stated to be processed.

Further, the signal processing method includes：11st select unit, for according to number of sub carrier wave and modulation system Select the data processing method.

Further, the 11st select unit, be additionally operable to when sub-carrier number be equal to 2, and modulation system be BPSK when, choosing Select the mode 6.

Further, the selecting module also includes at least one of：12nd select unit, for according to the sub- load When wave number mesh selects the data processing method, when the positive integer power that sub-carrier number is 2, selection mode 1；Otherwise selecting party Formula 7 or mode 6；13rd select unit, for according to the number of sub carrier wave select the data processing method when, when When sub-carrier number is less than or equal to Nsc3, data processing method is selected according to sub-carrier number purpose parity；Otherwise select the mode 7；Wherein, Nsc3 is the positive integer more than or equal to 1.

In the present invention, the first transmission node is processed bit sequence according to the data processing method that the first preset rules are selected Obtain being mapped to the frequency-region signal on subcarrier, and the frequency-region signal process obtain time-domain signal to be sent.Wherein, First preset rules are to select data processing method according at least one of：Modulation system, number of sub carrier wave, indication signaling, Indication signal, terminal capability, and then the first transmission node to frequency-region signal process and obtains time-domain signal to be sent, also It is to say process bit sequence according to different data processing methods in the present embodiment, so as to solve correlation technique In the SC-FDMA technologies of LTE and LTE-A at present can not meet the problem of NB-IOT terminal-pair peak-to-average force ratio requirements, carry The efficiency of terminal transceiving data high.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, of the invention to show Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：

Fig. 1 is the flow chart of signal processing method according to embodiments of the present invention；

Fig. 2 is the structured flowchart of signal processing apparatus according to embodiments of the present invention；

Fig. 3 is the alternative construction block diagram one of signal processing apparatus according to embodiments of the present invention；

Fig. 4 is the alternative construction block diagram two of signal processing apparatus according to embodiments of the present invention；

Fig. 5 is the alternative construction block diagram three of signal processing apparatus according to embodiments of the present invention；

Fig. 6 is the alternative construction block diagram four of signal processing apparatus according to embodiments of the present invention；

Fig. 7 is the schematic diagram of alternative embodiment 3-4 of the present invention.

Specific embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting, The feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. is to use In the similar object of difference, without for describing specific order or precedence.

A kind of signal processing method is provided in the present embodiment, and Fig. 1 is the stream of signal processing method according to embodiments of the present invention Cheng Tu, as shown in figure 1, the flow comprises the following steps：

Step S102：First transmission node selects data processing method according to the first preset rules, wherein, the first preset rules are Data processing method is selected according at least one of：Modulation system, number of sub carrier wave, indication signaling, indication signal, terminal Ability；

Step S104：First transmission node carries out processing according to the data processing method that the first preset rules are selected to bit sequence To the frequency-region signal being mapped on subcarrier, and frequency-region signal process obtain time-domain signal to be sent.

The step of by the present embodiment S102 and step S104, the data processing that the first transmission node is selected according to the first preset rules Mode carries out processing the frequency-region signal for obtaining being mapped on subcarrier to bit sequence, and frequency-region signal process obtains pending The time-domain signal for sending.Wherein, the first preset rules are to select data processing method according at least one of：Modulation system, son Carrier number, indication signaling, indication signal, terminal capability, and then the first transmission node to frequency-region signal process being treated The time-domain signal of transmission, that is to say, that can be processed bit sequence according to different data processing methods in the present embodiment, So as to the SC-FDMA technologies for solving current LTE and LTE-A in correlation technique can not meet NB-IOT terminal-pairs peak Than desired problem, the efficiency of the transceiving data of terminal is improve.

Data processing method for being related in the present embodiment includes at least one of：

Mode 1：Carrier phase keying (Tone Phase Shift Keying, referred to as TPSK).In F1 bit of bit sequence F2 bit obtain 1 frequency-region signal through ovennodulation, 1 frequency-region signal is mapped on F3 the 1 of available subcarrier, Wherein, F1-F2 bit in F1 bit of bit sequence in addition to F2 bit can at F3 for 1 subcarrier of instruction With the position in subcarrier；Wherein, F1, F2, F3, are positive integer, and F2<F1, F3>1.

Mode 2：Bit sequence is mapped on phase-shift keying (PSK) PSK planisphere modulation symbols, K frequency-region signal is obtained.Each Modulation symbol only carry less than log2 (M) individual bit information.Wherein M is PSK planisphere constellation point numbers.By K frequency domain Signal is mapped on K subcarrier；K is positive integer；

Wherein, 8-BPSK (binary phase shift keying) is used in which 2, which first arrives bit map to be encoded Modulation symbol sequence 1 is obtained on offset BPSK (referred to as O-BPSK) planisphere, then the modulation symbol of sequence 1 is mapped to K modulation symbol is obtained in 8-PSK constellation points.Institute is to illustrate that K modulation symbol only carries K bit information；Then Modulation symbol to be transmitted to K input first carries out discrete Fourier transform, obtains K frequency-region signal, and by the K frequency domain Signal is mapped on K available subcarrier.

Mode 3：

F1 bit modulation of bit sequence obtains L modulation symbol, and carrying out discrete Fourier transform to L modulation symbol obtains L The sequence 1 of individual symbol composition；

To the frequency of L symbol of sequence 1 after size set in advance is transformed to K precoding for the pre-coding matrix of L*K Domain signal；

K frequency-region signal is mapped on K continuously available subcarriers, wherein L, K is positive integer, and K >=L；

Mode 4：Bit sequence is mapped to the modulation symbol sequence specified in specified modulation symbol sebolic addressing set and obtains K frequency domain Signal, K frequency-region signal is mapped on K subcarrier；

Wherein, each OFDM (Orthogonal Frequency Division of the which 4 in the scheduled cycle Multiplexing, referred to as OFDM) symbol duration in, bit map to be modulated to modulation symbol sequence collection A's On one modulation symbol sequence.Bit map to length for K sequence on after, to K be input into modulation symbol to be transmitted it is advanced Row discrete Fourier transform, obtains K frequency-region signal, and the K frequency-region signal is mapped on K available subcarrier.Or, Within the duration of each OFDM symbol in scheduled cycle, bit map to be modulated to the one of modulation symbol sequence collection A On bar modulation symbol sequence.The element of modulation symbol sequence set A is to specify one group of tune that certain restriction relation is met on planisphere The sequence that symbol processed is constituted.By the length for the frequency-region signal of the sequence of K is mapped on K available subcarrier.

Wherein, the element of modulation symbol sequence set A is to specify one group of modulation symbol structure that certain restriction relation is met on planisphere Into sequence.Such as, it is 0-3 4 constellation points on QPSK planispheres to be incremented by number consecutively according to argument, then sequence { 0,0 }, { 0,2 }, { 1,1 }, { 1,3 }, { 2,2 }, { 2,0 }, { 3,3 }, { 3,1 } totally eight sequences constitute set A. 3 bits can be corresponding with this eight sequences.Or, when bit number is less than 3, picked out from eight sequences less than 8 Sequence and bit status correspond.Any one of 8 sequences generated for above-mentioned QPSK planispheres does direct computation of DFT Leaf transformation, carrier wave mapping, after discrete inverse Fourier transform, the sequence for obtaining has low PAPR；Such as, the 12 of 12-PSK Individual constellation point is incremented by number consecutively P0-9, A, B, then subcarrier feelings of 24 Sequence compositions two of the first row of table 1 according to argument Shape modulated symbol sebolic addressing set A.Such as, it is 0-9 12 constellation points of 12-PSK to be incremented by number consecutively according to argument, A, B, then the subcarrier situation modulated symbol sebolic addressing set A of 36 Sequence compositions three of the secondary series of table 1；Such as, 12-PSK 12 constellation points be incremented by number consecutively P0-9 according to argument, A, B, then of 1 tertial 48 Sequence composition of table four Carrier wave situation modulated symbol sebolic addressing set A.

Table 1

Mode 5：F2 bit classical prescription Formula X treatment in F1 bit of bit sequence obtains K frequency-region signal；X is just whole Number；

K frequency-region signal is mapped on the F3 K of available subcarrier, wherein, F2 is removed in F1 bit of bit sequence F1-F2 bit outside individual bit is used to indicate position of the K subcarrier in F3 available subcarrier.

Mode 6：Time domain and/or window adding in frequency domain overlap-add procedure are carried out before pulse-shaping filtering is carried out, time domain and/or window adding in frequency domain are folded Plus processing method purpose is the PAPR for reducing time-domain signal.Specific time-domain windowed processing method may be referred to 3GPP TSG RAN WG1 meeting motion R1-156975 and 3GPP TSG GERAN motions GP-150048.

Mode 7：According to the method for the up SC-OFDM of LTE Rel-12 versions, K frequency-region signal is obtained by bit sequence, And K frequency-region signal is mapped on K subcarrier.

It is the method that PAPR is further dropped on the basis of the LTE of Rel-12 versions with upper type 1-6, mode 7 is then Rel-12 The upward signal processing method of the LTE of version.

It should be noted that in the optional embodiment of the present embodiment, mode 2, mode 4 also includes：To K frequency domain letter Number carrying out discrete Fourier transform obtains K new frequency-region signal, then carries out subcarrier maps.

The indication signaling being related in the present embodiment includes：The signaling for selecting data processing method that second transmission node sends. Based on the indication signaling, the indication signaling in the present embodiment is used to indicate the data processing method of one below：Mode 7, mode X1, wherein, X1 is any positive integer in 1 to 6.

Additionally, in another optional embodiment of the present embodiment, indication signal includes at least one of：First transmission section The data processing method that point is used in Physical Random Access Channel sending signal；The negative received with the first transmission node should Answer the data processing method that the data of corresponding the first transmission node transmission of nack message are used.Based on the indication signal, Included according to indication signal selection data processing method：The first transmission node is selected to be adopted in Physical Random Access Channel sending signal Data processing method；The selection first transmission section corresponding with the negative response nack message that the first transmission node is received Point sends the data processing method that data are used.

In addition, in the optional embodiment of the present embodiment, for being related to select number according to number of sub carrier wave in the present embodiment Include at least one of according to processing mode：Data processing method is selected according to sub-carrier number purpose parity；According to sub-carrier number Size selects data processing method.

Wherein, at least one of is included according to sub-carrier number purpose parity selection data processing method：When sub-carrier number is strange During number, the data processing method selection data processing method according to even number situation；When sub-carrier number is even number, selection mode 1, When sub-carrier number is odd number, selection mode 7；When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, Selection planisphere and subcarrier Joint Mapping mode.Planisphere and subcarrier Joint Mapping mode refer to, P1 star on planisphere Seat point and the P2 subcarrier for carrying information represent P1*P2 kind states, in P1 constellation point of every kind of state correspondence one altogether Individual point is mapped to 1 subcarrier in P2 subcarrier.Bit map to one or more states in P1*P2 kind states.

When sub-carrier number is odd number, data processing method is included by the data processing method of even number situation：When the son of distribution When carrier number is even number, selection mode X2 is processed bit sequence；When the sub-carrier number of distribution is odd number, selection mode 5 pairs of bit sequences are processed and X=X2 in mode 5；X2 is positive integer.

Additionally, including at least one of according to sub-carrier number size selection data processing method what the present embodiment was related to：When When sub-carrier number is less than or equal to Nsc1, employing mode X3；Otherwise employing mode 7；When sub-carrier number is less than or equal to Nsc2, Employing mode 6；Otherwise not employing mode 6；When sub-carrier number is equal to 1, or during frequency-region signal only one of which non-zero signal, adopt With mode 6；Otherwise not employing mode 6；When employing mode 1, mode 6 is also adopted by；X3 is any positive integer in 1 to 6, Nsc1, Nsc2 are the positive integer more than or equal to 1.Wherein number of sub carrier wave refers to the distributed subcarrier in frequency domain number of scheduling. The number of sub carrier wave for such as being distributed can be 1,2,4,8,12.

It should be noted that the terminal capability being related in the present embodiment includes：Only support the first terminal ability of employing mode 7 And the second terminal ability of the X4 by the way of is supported, X4 is any positive integer in 1 to 6.Such as, first terminal energy Power is only supported using the LTE upward signal processing methods based on Rel-12 versions, and second terminal ability is used in support and is based on Outside the LTE upward signal processing methods of Rel-12 versions, support pattern 1 to the drop PAPR treatment sides of at least one mode 6 is gone back Method.

The mode according to modulation system selection data processing method for being related in the present embodiment includes at least one of：When During using at least one of QPSK QPSK, 8 phase-shift keying (PSK) 8-PSK modulation system, selection mode 3 is to bit sequence Row are processed；When using binary phase shift keying BPSK modulation systems, selection mode 1, mode 2, mode 4, mode 5th, a kind of in mode 6 is processed bit sequence.

Additionally, in the optional embodiment of the present embodiment, the signal processing method for being related in the present embodiment includes：Root The data processing method is selected according to number of sub carrier wave and modulation system.

For being related to select the data processing method to be carried including group according to number of sub carrier wave and modulation system in the present embodiment Wave number is equal to 2, and modulation system is when being BPSK, selects the mode 6.

For being related to select the data processing method also including at least one of according to number of sub carrier wave in the present embodiment： When the positive integer power that sub-carrier number is 2, selection mode 1；Otherwise selection mode 7 or mode 6；When sub-carrier number is less than During equal to Nsc3, data processing method is selected according to sub-carrier number purpose parity；Otherwise select the mode 7.Wherein, Nsc3 It is the positive integer more than or equal to 1.

Through the above description of the embodiments, those skilled in the art can be understood that the side according to above-described embodiment Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases before Person is more preferably implementation method.Based on such understanding, technical scheme substantially makes tribute to prior art in other words The part offered can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD) in, including some instructions are used to so that a station terminal equipment (can be mobile phone, computer, Server, or the network equipment etc.) method that performs each embodiment of the invention.

A kind of signal processing apparatus are additionally provided in the present embodiment, and the device is used to realize above-described embodiment and preferred embodiment, Repeating no more for explanation was carried out.As used below, term " module " can realize predetermined function software and/or The combination of hardware.Although the device described by following examples is preferably realized with software, hardware, or software and hard The realization of the combination of part is also that may and be contemplated.

Fig. 2 is the structured flowchart of signal processing apparatus according to embodiments of the present invention, and the device is applied to the first transmission node side, As shown in Fig. 2 the device includes：Selecting module 22, for selecting data processing method according to the first preset rules, wherein, First preset rules are to select data processing method according at least one of：Modulation system, number of sub carrier wave, indication signaling, Indication signal, terminal capability；Processing module 24, is of coupled connections with selecting module 22, for what is selected according to the first preset rules Data processing method is carried out processing the frequency-region signal for obtaining being mapped on subcarrier to bit sequence, and frequency-region signal is processed Obtain time-domain signal to be sent.

Alternatively, the data processing method being related in the present embodiment includes at least one of：

Mode 1：F2 bit in F1 bit of bit sequence obtains 1 frequency-region signal through ovennodulation, by 1 frequency-region signal It is mapped on F3 the 1 of available subcarrier, wherein, F1-F2 in F1 bit of bit sequence in addition to F2 bit Bit is used to indicate position of 1 subcarrier in F3 available subcarrier；Wherein, F1, F2, F3 are positive integer, and F2< F1, F3>1；

Mode 2：Bit sequence is mapped on phase-shift keying (PSK) PSK planisphere modulation symbols, K frequency-region signal is obtained, and will K frequency-region signal is mapped on K subcarrier, wherein, each modulation symbol is only carried less than log2 (M) individual bit information, M It is PSK planisphere constellation point numbers, K is positive integer；

Mode 3：F1 bit modulation of bit sequence obtains L modulation symbol, and carries out discrete fourier to L modulation symbol Conversion obtains the L sequence 1 of symbol composition；

K frequency-region signal is mapped on K continuously available subcarrier；Wherein L, K is positive integer, and K >=L；

Mode 4：Bit sequence is mapped to the modulation symbol sequence specified in specified modulation symbol sebolic addressing set and obtains K frequency domain Signal, and K frequency-region signal is mapped on K subcarrier, K is positive integer；

K frequency-region signal is mapped on the F3 K of available subcarrier, wherein, F2 is removed in F1 bit of bit sequence F1-F2 bit outside individual bit is used to indicate position of the K subcarrier in F3 available subcarrier；Wherein, F1, F2, F3, K are positive integer, and F2<F1, F3>K；

Mode 6：Time-domain windowed overlap-add procedure is carried out before pulse-shaping filtering is carried out；

In addition, the mode 2 in the present embodiment, mode 4 can also include：Discrete Fourier transform is carried out to K frequency-region signal K new frequency-region signal is obtained, then carries out subcarrier maps.

In the optional embodiment of the present embodiment, the indication signaling being related in the present embodiment includes：Second transmission node sends The signaling for selecting data processing method.Based on this, indication signaling is used to indicate the data processing method of one below：Side Formula 7, mode X1, wherein, X1 is any positive integer in 1 to 6.

In another optional embodiment in the present embodiment, the indication signal being related in the present embodiment include it is following at least it One：The data processing method that first transmission node is used in Physical Random Access Channel sending signal；With the first transmission node The data processing method that the data that the first corresponding transmission node of the negative response nack message that receives sends are used.

Fig. 3 is the alternative construction block diagram one of signal processing apparatus according to embodiments of the present invention, as shown in figure 3, being based on above-mentioned finger Show signal, when data processing method is selected according to indication signal, selecting module 22 includes：First choice unit 32, for selecting Select the data processing method that the first transmission node is used in Physical Random Access Channel sending signal；Second select unit 34, uses Used in selecting first transmission node corresponding with the negative response nack message that the first transmission node is received to send data Data processing method.

Fig. 4 is the alternative construction block diagram two of signal processing apparatus according to embodiments of the present invention, as shown in figure 4, the selecting module 22 include：3rd select unit 42, is used for, when data processing method is selected according to number of sub carrier wave, according to number of sub carrier wave Odd even Sexual behavior mode data processing method；4th select unit 44, for selecting data processing method according to sub-carrier number size.

Alternatively, the 3rd select unit, is additionally operable at least one of：When sub-carrier number is odd number, according to even number situation Data processing method selects data processing method；When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, Selection mode 7；When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, selects planisphere and subcarrier Joint Mapping mode.

Fig. 5 is the alternative construction block diagram three of signal processing apparatus according to embodiments of the present invention, as shown in figure 5, according to sub- load During wave number size selection data processing method, the modeling block 22 includes：5th select unit 52, for when sub-carrier number less than etc. When Nsc1, selection mode X3；Otherwise selection mode 7；6th select unit 54, for being less than or equal to Nsc2 when sub-carrier number When, selection mode 6；Otherwise not selection mode 6；7th select unit 56, for being equal to 1, or frequency domain letter when sub-carrier number During number only one of which non-zero signal, selection mode 6；Otherwise not selection mode 6；8th select unit 58, for working as selection mode When 1, also selection mode 6；Wherein, X3 is any positive integer in 1 to 6, and Nsc1, Nsc2 are just whole more than or equal to 1 Number.

Alternatively, terminal capability includes：Only support the first terminal ability of employing mode 7 and support the of the X4 by the way of Two terminal capabilities, X4 is any positive integer in 1 to 6.

Fig. 6 is the alternative construction block diagram four of signal processing apparatus according to embodiments of the present invention, as shown in fig. 6, according to modulation When mode selects data processing method, the selecting module 22 includes：9th menu unit 62, for when using QPSK During at least one of QPSK, 8 phase-shift keying (PSK) 8-PSK modulation system, selection mode 3 is processed bit sequence；Tenth Select unit 64, for when using binary phase shift keying BPSK modulation systems when, selection mode 1, mode 2, mode 4, A kind of in mode 5, mode 6 is processed bit sequence.

The selecting module being related in the present embodiment can also include：11st select unit, can be used for according to sub-carrier number Mesh and modulation system selection data processing method when, when sub-carrier number be equal to 2, and modulation system be BPSK when, selection mode 6；

12nd select unit, for when the data processing method is selected according to the number of sub carrier wave, when sub-carrier number is 2 Positive integer power when, selection mode 1；Otherwise selection mode 7 or mode 6；

13rd select unit, for when the data processing method is selected according to the number of sub carrier wave, when sub-carrier number is small When equal to Nsc3, data processing method is selected according to sub-carrier number purpose parity；Otherwise select the mode 7；Wherein, Nsc3 is the positive integer more than or equal to 1.

It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, can by with Under type is realized, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at multiple respectively In reason device.

With reference to alternative embodiment of the invention, the present invention is described in detail；

This alternative embodiment provides a kind of method for reducing peak-to-average power ratio, first to for reducing NB-IOT system terminals The candidate technologies scheme of PAPR is introduced, and the technical scheme includes：

Mode 2：Bit sequence is mapped on phase-shift keying (PSK) PSK planisphere modulation symbols, K frequency-region signal is obtained.Each Modulation symbol is only carried less than log2 (M) individual bit information.Wherein M is PSK planisphere constellation point numbers.K frequency domain is believed Number it is mapped on K subcarrier；K is positive integer；

Mode 3：

F1 bit modulation of bit sequence obtains L modulation symbol.Discrete Fourier transform is carried out to L modulation symbol and obtains L The sequence 1 of individual symbol composition；

Wherein, each OFDM (Orthogonal Frequency Division of the which 4 in the scheduled cycle Multiplexing, referred to as OFDM) symbol duration in, bit map to be modulated to modulation symbol sequence collection A's On one modulation symbol sequence.The element of modulation symbol sequence set A is to specify one group that certain restriction relation is met on planisphere The sequence that modulation symbol is constituted.Such as, it is P0-P3 4 constellation points on QPSK planispheres to be incremented by number consecutively according to argument, So sequence { P0, P0 }, { P0, P2 }, { P1, P1 }, { P1, P3 }, { P2, P2 }, { P2, P0 }, { P3, P3 }, P3, P1 } totally eight sequences composition set A.3 bits can be corresponding with this eight sequences.Bit map to length for K sequence After upper, discrete Fourier transform is first carried out to the K modulation symbol to be transmitted being input into, obtain K frequency-region signal, and by the K Individual frequency-region signal is mapped on K available subcarrier.Any one of 8 sequences generated for above-mentioned QPSK planispheres does Discrete Fourier transform, carrier wave mapping, after discrete inverse Fourier transform, the sequence for obtaining has low PAPR；Or,

Within the duration of each OFDM symbol in scheduled cycle, bit map to be modulated to modulation symbol sequence collection A A modulation symbol sequence on.The element of modulation symbol sequence set A is to specify meet the one of certain restriction relation on planisphere The sequence that group modulation symbol is constituted.By the length for the frequency-region signal of the sequence of K is mapped on K available subcarrier.Appropriate choosing Select sequence to constitute set A, frequency-region signal can be made to do the sequence obtained after discrete inverse Fourier transform has low PAPR.

It should be noted that in NB-IOT systems, the bandwidth of system only has 200kHz, calculated with the subcarrier spacing of 15k, After the protection bandwidth of 20k, the number of available subcarrier has 12.In NB-IOT systems, terminal is in the upstream direction With one or more sub-frame of uplink as time domain dispatching cycle, frequency domain dispatching is carried out with one or more continuous subcarriers.I.e. each The minimum bandwidth that terminal can be used is a subcarrier (15K), and maximum bandwidth is 12 subcarriers (180k).Terminal can use Number of sub carrier wave be by receive base station send Downlink Control Information in subcarrier distribute information acquisition.

With reference to the specific embodiment of alternative embodiment of the present invention, the present invention is described in detail

Embodiment 1

Sub- embodiment 1-1

In this alternative embodiment, there are two kinds of transmission nodes in NB-IOT systems, respectively transmission node T1 and T2. base stations pass through Scheduling indicates the transmission node T1 and T2 to carry out uplink using 2 and 3 subcarriers respectively, i.e. respectively even number and odd number Subcarrier is transmitted.Transmission node T1 when upward signal is processed using drop PAPR modes 2, and transmission node T2 then employing modes 5.For transmission node T1,2 bits are obtained 2 frequency-region signals using 8-BPSK modulating schemes, re-mapped continuous On 2 subcarriers；For transmission node T2,3 bits to be modulated are divided into 2 parts, wherein 2 bits are according to candidate's skill Art 2, i.e., using 8-BPSK schemes process and obtain 2 frequency-region signals.And this 2 frequency-region signals are mapped to 3 subcarriers There are two methods when upper：When another bit to be modulated is equal to 0, preceding 2 subcarriers are taken；When another bit to be modulated During equal to 1,2 subcarriers after occupancy.

When transmission node T1 and T2 carries out being sent after inverse discrete fourier transform etc. is processed to the frequency domain data being mapped on subcarrier Domain signal.

For odd subcarriers transmission, in odd number bit to be encoded to be used to indicate the sub-carrier positions of frequency-region signal, and Other bits are processed otherwise, can make the PAPR of sending signal under odd subcarriers situation as even number situation, So that the PAPR characteristics all having had under odd number even number situation.

Sub- embodiment 1-2

In this alternative embodiment, there are two kinds of transmission nodes in NB-IOT systems, respectively transmission node T1 and T2. base stations pass through Scheduling indicate transmission node T1 and T2 carry out uplink using 10 and 11 subcarriers respectively, i.e., respectively even number and very Number subcarrier transmission.

Alternatively, transmission node T1 when upward signal is processed using drop PAPR modes 3, and transmission node T2 then employing modes 5.For transmission node T1,16 bit modulations are obtained 8 QPSK symbols, discrete Fu is carried out to 8 QPSK symbols In leaf transformation, 8 frequency-region signals are obtained, then to 8 frequency-region signals, by size set in advance for 8*10 prelists Code matrixing is the frequency-region signal after 10 precodings, and 10 signals are mapped on 10 continuously available subcarriers.

For transmission node T2,17 bits to be modulated are divided into 2 parts, wherein 16 bits in the manner described above 3, i.e., Using pre-coding scheme process and obtain 10 frequency-region signals to subcarrier to be mapped.And this 10 frequency-region signals are mapped to There are two methods when on 11 subcarriers：When another bit to be modulated is equal to 0, preceding 10 subcarriers are taken；When another When bit to be modulated is equal to 1,10 subcarriers after occupancy.

Sub- embodiment 1-3

In this alternative embodiment, in NB-IOT systems transmission node T1 and T2. base stations by dispatch indicate transmission node T1 and T2 carries out uplink using 4 and 3 subcarriers respectively, i.e., respectively even number and odd subcarriers are transmitted.

Transmission node T1 when upward signal is processed using drop PAPR modes 1, and transmission node T2 then employing mode 4.Specifically Say that 4 bits are divided into two parts by transmission node T1, and 2 are modulated to 1 QPSK symbol, and another 2 bits are used in ground Indicate position in 4 of the QPSK symbols in 4 subcarriers.Using coded system be mapped to 3 bits by transmission node T2 One modulation symbol sequence of modulation symbol sequence collection A, so as to obtain 3 modulation symbols.Specifically, modulation symbol sequence Collection A includes 8 sequences, and every sequence includes 3 modulation symbols.This 8 sequences are from another bigger sequence sets B It is select according to larger Euclidean distance.Sequence sets B includes 32 sequences, and every the 3 of sequence modulation symbols are all 1 point on 12-PSK planispheres, 3 modulation symbols meet certain constraint.Such as according to 12 on 12-PSK planispheres It is P0-P9, PA, PB that constellation point is incremented by number consecutively according to argument.Then { P0, P0, P0 }, { P0, P4, P8 }, P0, P8, P4 } ... ..., { P2, P2, P2 }, { P2, P6, PA }, { P2, PA, P6 } ... ... is the sequence in set B. Discrete Fourier transform, carrier wave mapping are done any one of the sequence in set B, after discrete inverse Fourier transform, is obtained Sequence has low PAPR.3 frequency domain symbols for obtaining are done discrete Fourier transform, carrier wave mapping by transmission node T1, discrete Sending signal after inverse Fourier transform etc. treatment.

The present embodiment uses coded system for odd subcarriers situation, can obtain relatively low PAPR.And even number situation is applied to Other drop PAPR odd numbers.So that the PAPR characteristics all having had under odd number even number situation.

It should be noted that in the present embodiment, can also employing mode 4 or other drop PAPR modes under even number situation.This Outward, after sequence of the pass-through mode 4 bit modulation to appropriate selection, it is also possible to do not do discrete Fourier transform, only carry out follow-up Carrier wave mapping, discrete inverse Fourier transform etc. treatment.

Embodiment 2

Sub- embodiment 2-1

In this alternative embodiment, transmission node T1 and T2. base stations indicate transmission node T1 and T2 difference in NB-IOT systems Uplink is carried out using QPSK and BPSK associated modulations mode.

Transmission node T1 is when upward signal is processed using drop PAPR modes 3, i.e. precoding mode；And transmission node T2 is then adopted With mode 2, i.e. 8-BPSK technologies.When transmission node is modulated using QPSK, channel condition is typically preferable, the son load of scheduling Wave number is likely to than larger, therefore is more suitable for dropping PAPR using precoding mode.And when scheduling sub-carriers number is smaller, use Precoding mode may seriously reduce spectrum efficiency.When transmission node uses BPSK associated modulations, modulated using 8-BPSK and dropped PAPR can also obtain relatively low PAPR.

It should be noted that transmission node T2 can also use TPSK technologies.

Sub- embodiment 2-2

The place that the present embodiment is different from sub- embodiment 2.1 is that transmission node T1 and T2 are adjusted using 8-PSK and BPSK respectively Mode processed carries out uplink.Transmission node T1 is when upward signal is processed using drop PAPR modes 3, i.e. precoding mode； And transmission node T2 then employing mode 2, i.e. 8-BPSK technologies.Notice that 8-BPSK is different from 8-PSK, the former accords with 1 modulation Number only carry 1 bit information.

It should be noted that transmission node T2 can also use TPSK technologies.

Embodiment 3：

Embodiment 3-1

In this alternative embodiment, transmission node T1 belongs to depth covering terminal away from base station；Base station configuration T1 uses drop PAPR Method carries out uplink, to lift the efficiency of terminal, saving energy consumption.In the present embodiment, drop PAPR methods can be mode 1 To mode 6 any one；Close to base station, to efficiency requirement be not as high as T1, base station configures T2 use sides to transmission node T2 Formula 7 carries out uplink, i.e., further drop PAPR methods are not used on the basis of the LTE of Rel-12 versions.

In addition, some terminal types only support the uplink of Rel-12 versions LTE, do not support further to drop PAPR schemes, This Terminal Type employing mode 7 carries out uplink；Some terminal types are supported further on the basis of the LTE of Rel-12 versions Drop PAPR methods, such as one kind of mode 1 to 6, this Terminal Type can carry out uplink using corresponding drop PAPR methods.

Embodiment 3-2

In this alternative embodiment, transmission node T1 is carried out up using drop PAPR modes 1 in specified PRACH resources Access, in follow-up transmission, T1 is also adopted by corresponding drop PAPR modes, i.e. mode 1 and carries out uplink, send related Data message.

Embodiment 3-3

In this alternative embodiment, in NB-IOT systems transmission node T1 and T2. base stations by dispatch indicate transmission node T1 and T2 carries out uplink using 4 and 12 subcarriers respectively.

When upward signal is processed using drop PAPR modes 1, and transmission node T2 then employing modes 7 exist transmission node T1 Further drop PAPR methods are not used on the basis of the LTE of Rel-12 versions.In the present embodiment, for distribution sub-carrier number Situation of the mesh less than or equal to 4, terminal is using drop PAPR schemes；And when the number of sub carrier wave of distribution is more than 4, do not use Drop PAPR schemes.Because the scheme of small sub-carrier number does not apply to larger carrier number, in order to simplify design, it is more than for sub-carrier number 4 situation does not use drop PAPR schemes.

Embodiment 3-4

In this alternative embodiment, transmission node T1 and T2. transmission nodes T1 and T2 use 2 respectively in NB-IOT systems Subcarrier and 8 subcarriers carry out uplink.T1 and T2 are respectively the frequency band of 3.75kHz and 15kHz in subcarrier spacing It is transmitted using SC-OFDM.

T1 employing modes 6 carry out upward signal treatment.T1 modulation after two modulation symbols carry out discrete Fourier transform and obtain 2 sequences 2 of symbol composition, discrete inverse Fourier transform is carried out after carrying out subcarrier maps to sequence 2.Followed by time domain Adding window overlap-add procedure, then carry out pulse-shaping filtering.It is to suppress band outward leakage to be filtered treatment, it is to avoid to adjacent sub- load Ripple causes big interference.In the LTE upward signals treatment of Rel-12 versions, modulation symbol reflects after carrying out discrete Fourier transform It is mapped on subcarrier, then carries out discrete inverse Fourier transform.Because frequency domain can reserve a small number of subcarriers as protection band, so as to subtract The small interference to adjacent sub-carriers.But for the less situation of number of modulation symbols, frequency can be caused using the way of reserved protection band The larger waste of spectrum.Therefore in the present embodiment, situation of the sub-carrier number less than 4 for distributing is filtered using the shaping of particular design Ripple device is filtered treatment.Filtering process can cause sending signal PAPR to raise, therefore can be using the method for time-domain windowed superposition Suppress PAPR.Fig. 7 is the schematic diagram of alternative embodiment 3-4 of the present invention, as shown in fig. 7, adjacent OFDM symbol is multiplied by respectively Specify window function and be added, window function is to overlap in the adjacent several points of distinct symbols,.

In the present embodiment, situation of the sub-carrier number more than 4 for distributing no longer carries out dropping PAPR treatment, therefore T2 use sides Formula 7 carries out upward signal treatment.

Embodiment 3-5

In this alternative embodiment, transmission node T1 and T2. transmission nodes T1 and T2 use 2 respectively in NB-IOT systems Subcarrier and 8 subcarriers carry out uplink.

T1 employing modes 6 carry out upward signal treatment.T1 modulation after two BPSK modulation symbols carry out discrete fourier change Get the sequences 2 constituted to 2 symbols in return, sequence 2 is made up of the signal that 1 non-zero signal and are equal to 0.Carry out subcarrier Discrete inverse Fourier transform is carried out to sequence 2 after mapping.Followed by time-domain windowed overlap-add procedure, then carry out pulse-shaping filter Ripple.It is to suppress band outward leakage to be filtered treatment, it is to avoid big interference is caused to adjacent sub-carrier.In Rel-12 versions In the treatment of LTE upward signals, modulation symbol is mapped on subcarrier after carrying out discrete Fourier transform, then is carried out in discrete inverse Fu Leaf transformation.Because frequency domain can reserve a small number of subcarriers as protection band, so as to reduce the interference to adjacent sub-carriers.But for adjusting The less situation of number of symbols processed, the larger waste of frequency spectrum can be caused using the way of reserved protection band.Therefore in the present embodiment, Treatment is filtered using the formed filter of particular design for only 1 situation of non-zero signal of frequency-region signal.Filtering process Sending signal PAPR can be caused to raise, therefore PAPR can be suppressed using the method for time-domain windowed superposition.In fact use is worked as During TPSK, i.e. mode 1, frequency domain also only has 1 non-zero signal, can be with employing mode 6.

In the present embodiment, T2 employing modes 2 carry out upward signal treatment.

The LTE NB-IOT system datas provided by this alternative embodiment receive and dispatch solution, in different configuration parameters, such as adjust Ensure that radio communication is normally carried out under mode processed and distribution sub-carrier number, significantly reduce the PAPR of sending signal, improve The power amplification efficiency of terminal, saves terminal energy consumption, reduces terminal cost, it is ensured that the covering of system.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by Storage is set to for performing the program code of following steps：

S1：First transmission node according to the first preset rules select data processing method, wherein, the first preset rules be according to At least one lower selection data processing method：Modulation system, number of sub carrier wave, indication signaling, indication signal, terminal capability；

S2：First transmission node to bit sequence process being mapped according to the data processing method that the first preset rules are selected Frequency-region signal on to subcarrier, and frequency-region signal process obtain time-domain signal to be sent.

Obviously, those skilled in the art should be understood that above-mentioned of the invention each module or each step can use general calculating Device realizes that they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted, Alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to be stored in storage device In performed by computing device, and in some cases, shown or described step can be performed with different from order herein Suddenly, each integrated circuit modules or by them is fabricated to respectively, or the multiple modules or step in them is fabricated to single Integrated circuit modules are realized.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are these are only, is not intended to limit the invention, for a person skilled in the art, The present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, equivalent, Improve etc., should be included within the scope of the present invention.

Claims

1. a kind of signal processing method, it is characterised in that including：

First transmission node according to the first preset rules select data processing method, wherein, first preset rules be according to The data processing method is selected according at least one of：Modulation system, number of sub carrier wave, indication signaling, indication signal, Terminal capability；

First transmission node is processed bit sequence according to the data processing method that the first preset rules are selected The frequency-region signal on subcarrier is mapped to, and the frequency-region signal process is obtained time-domain signal to be sent.

2. method according to claim 1, it is characterised in that the data processing method includes at least one of：

Mode 1：F2 bit in F1 bit of the bit sequence obtains 1 frequency-region signal through ovennodulation, will be described 1 frequency-region signal is mapped on F3 the 1 of available subcarrier, wherein, except described in F1 bit of the bit sequence F1-F2 bit outside F2 bit is used to indicate position of 1 subcarrier in F3 available subcarrier；Its In, F1, F2, F3 are positive integer, and F2<F1, F3>1；

Mode 2：The bit sequence is mapped on phase-shift keying (PSK) PSK planisphere modulation symbols, K frequency domain letter is obtained Number, and the K frequency-region signal is mapped on K subcarrier, wherein, each described modulation symbol is only carried and is less than Log2 (M) individual bit information, M is PSK planisphere constellation point numbers, and the K is positive integer；

Mode 3：F1 bit modulation of the bit sequence obtains L modulation symbol, and L modulation symbol is carried out from Scattered Fourier transformation obtains the L sequence 1 of symbol composition；

The L symbol to the sequence 1 is prelisted by size set in advance for the pre-coding matrix of L*K is transformed to K Frequency-region signal after code；

The K frequency-region signal is mapped on K continuously available subcarrier；Wherein L, K is positive integer, and K ≥L；

Mode 4：The bit sequence is mapped to the modulation symbol sequence specified in specified modulation symbol sebolic addressing set and obtains institute K frequency-region signal is stated, and the K frequency-region signal is mapped on K subcarrier, the K is positive integer；

Mode 5：F2 bit classical prescription Formula X treatment in F1 bit of the bit sequence obtains K frequency-region signal； The X is positive integer；

The K frequency-region signal is mapped on the F3 K of available subcarrier, wherein, the bit sequence F1 F1-F2 bit in bit in addition to the F2 bit is used to indicate the K subcarrier to be carried in F3 available son Position in ripple；Wherein, F1, F2, F3, K are positive integer, and F2<F1, F3>K；

Mode 6：Time domain and/or window adding in frequency domain overlap-add procedure are carried out before pulse-shaping filtering is carried out；

Mode 7：According to the method for LTE Rel-12 version uplink single-carrier OFDMs SC-OFDM, by described Bit sequence obtains K frequency-region signal, and K frequency-region signal is mapped on K subcarrier.

3. method according to claim 2, it is characterised in that the mode 2 and the mode 4 also include：To the K Individual frequency-region signal carries out discrete Fourier transform and obtains the new K frequency-region signal, then carries out subcarrier maps.

4. method according to claim 1, it is characterised in that the indication signaling includes：Sent by the second transmission node Signaling for selecting data processing method.

5. method according to claim 4, it is characterised in that the indication signaling is used to indicate the data processing of one below Mode：Mode 7, mode X1, wherein, the X1 is any positive integer in 1 to 6.

6. method according to claim 1, it is characterised in that the indication signal includes at least one of：

The data processing method that first transmission node is used in Physical Random Access Channel sending signal；

First transmission node corresponding with the negative response nack message that first transmission node is received sends The data processing method that is used of data.

7. method according to claim 6, it is characterised in that select the data processing method to include according to the indication signal：

The data processing method for selecting first transmission node to be used in Physical Random Access Channel sending signal；

Selection first transmission node corresponding with the negative response nack message that first transmission node is received Send the data processing method that data are used.

8. method according to claim 2, it is characterised in that the data processing method is selected according to the number of sub carrier wave Including at least one of：

The data processing method is selected according to sub-carrier number purpose parity；

The data processing method is selected according to sub-carrier number size.

9. method according to claim 8, it is characterised in that the data processing is selected according to sub-carrier number purpose parity Mode include at least one：

When sub-carrier number is even number, the mode 1 is selected, when sub-carrier number is odd number, select the mode 7；

When sub-carrier number is even number, the mode 1 is selected, when sub-carrier number is odd number, select planisphere and subcarrier Joint Mapping mode.

10. method according to claim 9, it is characterised in that when sub-carrier number is odd number, data processing method is by even number The data processing method of situation is included：When the sub-carrier number of distribution is even number, selection mode X2 is to the bit sequence Row are processed；When the sub-carrier number of distribution is odd number, select described 5 pairs of bit sequences of mode processed and X=X2 described in the mode 5；The X2 is positive integer.

11. methods according to claim 8, it is characterised in that the data processing side is selected according to the sub-carrier number size Formula includes at least one of：

When sub-carrier number is less than or equal to Nsc1, selection mode X3；Otherwise select the mode 7；

When sub-carrier number is less than or equal to Nsc2, the mode 6 is selected；The mode 6 is not selected otherwise；

When sub-carrier number is equal to 1, or during frequency-region signal only one of which non-zero signal, selection mode 6；Institute is not selected otherwise State mode 6；

When the mode 1 is selected, simultaneous selection mode 6；

Wherein, the X3 is any positive integer in 1 to 6, and Nsc1, Nsc2 are the positive integer more than or equal to 1.

12. methods according to claim 2, it is characterised in that the terminal capability includes：Support using the mode 7 First terminal ability, support using the second terminal ability of the mode X4, the X4 is any just whole in 1 to 6 Number.

13. methods according to claim 2, it is characterised in that the data processing method is selected according to the modulation system Mode includes at least one of：

When using at least one of QPSK QPSK, 8 phase-shift keying (PSK) 8-PSK modulation system, selection is described 3 pairs of bit sequences of mode are processed；

When using binary phase shift keying BPSK modulation systems, the mode 1, the mode 2, the side are selected A kind of mode in formula 4, the mode 5, the mode 6 is processed the bit sequence.

14. methods according to claim 2, it is characterised in that methods described also includes：According to number of sub carrier wave and modulation methods Formula selects the data processing method.

15. methods according to claim 14, it is characterised in that selected at the data according to number of sub carrier wave and modulation system Reason mode includes：When sub-carrier number is equal to 2, and modulation system is when being BPSK, selects the mode 6.

16. methods according to claim 2, it is characterised in that the data processing method is selected according to the number of sub carrier wave Also include at least one of：

When the positive integer power that sub-carrier number is 2, the mode 1 is selected；Otherwise select the mode 7 or the side Formula 6；

When sub-carrier number is less than or equal to Nsc3, data processing method is selected according to sub-carrier number purpose parity；Otherwise select The mode 7 is selected, wherein, Nsc3 is the positive integer more than or equal to 1.

A kind of 17. signal processing apparatus, are applied to the first transmission node side, it is characterised in that including：

Selecting module, for selecting data processing method according to the first preset rules, wherein, first preset rules are The data processing method is selected according at least one of：Modulation system, number of sub carrier wave, indication signaling, instruction letter Number, terminal capability；

Processing module, the data processing method for being selected according to the first preset rules to bit sequence process being reflected The frequency-region signal on subcarrier is mapped to, and the frequency-region signal process is obtained time-domain signal to be sent.

18. devices according to claim 17, it is characterised in that the data processing method includes at least one of：

Mode 7：According to the method for the up SC-OFDM of LTE Rel-12 versions, K frequency is obtained by the bit sequence Domain signal, and K frequency-region signal is mapped on K subcarrier.

19. devices according to claim 18, it is characterised in that the mode 2, the mode 4 also includes：To the K Individual frequency-region signal carries out discrete Fourier transform and obtains the new K frequency-region signal, then carries out subcarrier maps.

20. devices according to claim 18, it is characterised in that the indication signaling includes：The use that second transmission node sends In the signaling of selection data processing method.

21. devices according to claim 20, it is characterised in that the indication signaling is used to indicate the data processing of one below Mode：Mode 7, mode X1, wherein, the X1 is any positive integer in 1 to 6.

22. devices according to claim 17, it is characterised in that the indication signal includes at least one of：

23. devices according to claim 22, it is characterised in that when data processing method is selected according to the indication signal, The selecting module includes：

First choice unit, for selecting what first transmission node was used in Physical Random Access Channel sending signal Data processing method；

Second select unit, the negative response nack message for selecting with first transmission node is received is corresponding First transmission node send the data processing method that is used of data.

24. devices according to claim 18, it is characterised in that the data processing side is being selected according to the number of sub carrier wave During formula, the selecting module includes：

3rd select unit, for selecting the data processing method according to sub-carrier number purpose parity；

4th select unit, for selecting the data processing method according to sub-carrier number size.

25. devices according to claim 24, it is characterised in that the 3rd select unit is additionally operable at least one of：

When sub-carrier number is even number, selection mode 1, when sub-carrier number is odd number, selection planisphere and subcarrier are combined Mapping mode.

26. devices according to claim 25, it is characterised in that the 3rd select unit, are additionally operable to when the subcarrier of distribution When number is for even number, selection mode X2 is processed the bit sequence；When the sub-carrier number of distribution is odd number, selection 5 pairs of bit sequences of the mode processed and the mode 5 described in X=X2；The X2 is positive integer.

27. devices according to claim 24, it is characterised in that the data processing is being selected according to the sub-carrier number size During mode, the selecting module includes：

5th select unit, for when sub-carrier number be less than or equal to Nsc1 when, selection mode X3；Otherwise select the side Formula 7；

6th select unit, for when sub-carrier number is less than or equal to Nsc2, selecting the mode 6；Institute is not selected otherwise State mode 6；

7th select unit, for being equal to 1 when sub-carrier number, or during frequency-region signal only one of which non-zero signal, selects institute State mode 6；The mode 6 is not selected otherwise；

8th select unit, for when select the mode 1 when, mode 6 described in simultaneous selection；

28. devices according to claim 18, it is characterised in that the terminal capability includes：Support using the mode 7 First terminal ability, support described in by the way of X4 second terminal ability, the X4 be in 1 to 6 it is any just Integer.

29. devices according to claim 18, it is characterised in that the data processing method is being selected according to the modulation system When, the selecting module includes：

9th menu unit, for when using at least one of QPSK QPSK, 8 phase-shift keying (PSK) 8-PSK modulation During mode, described 3 pairs of bit sequences of mode are selected to process；

Tenth select unit, for when using binary phase shift keying BPSK modulation systems, selecting the mode 1, institute The one kind stated in mode 2, the mode 4, the mode 5, the mode 6 is processed the bit sequence.

30. devices according to claim 18, it is characterised in that the selecting module also includes：11st select unit, uses According to number of sub carrier wave and the modulation system selection data processing method.

31. devices according to claim 30, it is characterised in that the 11st select unit, are additionally operable to when sub-carrier number etc. In 2, and modulation system is when being BPSK, selects the mode 6.

32. devices according to claim 18, it is characterised in that the selecting module also includes at least one of：

12nd select unit, for when the data processing method is selected according to the number of sub carrier wave, working as subcarrier When number is 2 positive integer power, selection mode 1；Otherwise selection mode 7 or mode 6；

13rd select unit, for when the data processing method is selected according to the number of sub carrier wave, working as subcarrier When number is less than or equal to Nsc3, data processing method is selected according to sub-carrier number purpose parity；Otherwise select the mode 7； Wherein, Nsc3 is the positive integer more than or equal to 1.