CN107666455A - The method and the network equipment of a kind of transmission signal - Google Patents

The method and the network equipment of a kind of transmission signal Download PDF

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Publication number
CN107666455A
CN107666455A CN201611229827.5A CN201611229827A CN107666455A CN 107666455 A CN107666455 A CN 107666455A CN 201611229827 A CN201611229827 A CN 201611229827A CN 107666455 A CN107666455 A CN 107666455A
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China
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subcarrier
sequence
network equipment
signal
positive integer
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CN201611229827.5A
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CN107666455B (en
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曲秉玉
刘建琴
周永行
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2017/094107 priority Critical patent/WO2018024127A1/en
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    • 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
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation

Abstract

The embodiment of the present invention provides a kind of method and the network equipment of transmission signal, and wherein method comprises the following steps：First ray { x of the first network equipment by length for LP0,x1,...,xL·P‑1Be mapped in the first set for including LP subcarrier of the first subcarrier group, the first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,...,cB‑1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to subcarrier cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, and i=0,1,2 ..., P 1, r (i) ∈ { 0,1,2 ..., K 1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~L 1, u ∈ { 0,1 ..., L 1 }, j is the imaginary part of plural number；{a0,a1,...,aP‑1It is the sequence that length is P；Signal is sent according to the signal generation on the subcarrier of the first subcarrier group and sends the transmission signal of generation.The embodiment of the present invention can keep the low peak average ratio that signal transmits, and reduce the interference between signal.

Description

The method and the network equipment of a kind of transmission signal
Technical field
The present invention relates to mobile communication technology field, and in particular to the method and the network equipment of a kind of transmission signal.
Background technology
In wireless communications, frequency spectrum is very expensive resource.Modern Communication System, for example, global system for mobile telecommunications (Global System for Mobile Communication, GSM) system, CDMA (Code Division Multiple Access, CDMA) 2000 systems, WCDMA (Wideband Code Division Multiple Access, WCDMA) system and third generation partner program (3rd Generation Partnership Project, Long Term Evolution (Long Term Evolution, LTE) system 3GPP), is generally all operated on below 3GHz frequency spectrum.With The appearance of the extension of intelligent terminal business, particularly video traffic, current frequency spectrum resource has been difficult to meet user to holding The explosive growth of amount demand.High-frequency band with bigger available bandwidth particularly millimeter wave frequency band, has become next For candidate's frequency range of communication system, such as 3GHz-200GHz frequency ranges.Modern Communication System improves usually using multi-antenna technology The capacity and coverage of system, to improve the experience of user.High-frequency band technology is applied in multiple antennas, can be subtracted significantly The size of small multiple antennas configuration, consequently facilitating the acquisition of site and the deployment of more antennas.However, with the system such as existing LTE Unlike working frequency range, high-frequency band more enters the influence for causing the factor such as bigger path loss, particularly air, vegetation One step exacerbates the loss of radio transmission.
For the big path loss for overcoming high-frequency transmission to bring, wave beam forming is used.User passes through digital beam forming Or the mode of analog beam figuration carries out the data transmitting of multiuser multiplexing.In the various technologies of multiuser multiplexing, orthogonal frequency (Orthogonal Frequency Division Multiplexing, the OFDM) technology of multiplexing is due to showing strong anti-multipath Interference performance, simple discrete Fourier transform realize, and the features such as be advantageous to multiple antenna transmission technique, and be widely used In downstream signal transmission in LTE system.
Uplink signal transmissions in LTE system can use discrete Fourier transform extension OFDM (Discrete Fourier Transform Spread OFDM, DFT-S-OFDM) technology.DFT-S-OFDM technologies can be real Now with single-carrier signal similar in peak-to-average force ratio (Peak to Average Power Ratio, PAPR) performance, low PAPR can lower Hard-wired complexity and cost.When the subcarrier group shared by different user is not overlapping, DFT-S-OFDM can be realized just Frequency division multiple access is handed over, thus obtains single-carrier OFDMA scheme, therefore, DFT-S-OFDM technologies are especially suitable for mobile logical The uplink of letter system.
Single carrier transmission defined in current LTE system refers to meet single-carrier property in time domain, can so obtained Relatively low PAPR., then still can be real by centralized single carrier transmission or distributed single carrier transmission two ways on frequency domain It is existing.For centralized single carrier transmission, a kind of signal (data-signal or reference signal) that sends of a user accounts on frequency domain With continuous frequency spectrum (i.e. subcarrier in frequency domain is aligned in together), the frequency spectrum of occupancy is a part for whole system bandwidth.It is right In distributed single carrier transmission, user it is a kind of send signal (data-signal or reference signal) then taken on frequency domain it is non- Continuous frequency spectrum.In existing technology, for multiple data-signals of user or reference signal transmission, for keep with Low PAPR similar in single-carrier signal, data-signal and reference signal (such as demodulated reference signal (Demodulation Reference Signal, DMRS)) on the same antenna transmit when be transmitted using time-multiplexed mode.
But when using high-frequency band technology, the simultaneous transmission in same time-domain symbol is required in some special subframes Data-signal and reference signal.For example, a user needs line number in simultaneous transmission in the last symbol of special subframe It is believed that number and uplink reference signals.Now, can in order to carry out the data-signal and reference signal simultaneous transmission in same symbol So that multiple subcarriers in last symbol to be divided into two sub- carrier wave sets of non-overlapping copies, to transmit upstream data letter respectively Number and uplink reference signals.In other words, multiple subcarriers are two broach by frequency division, and broach 1 is used for upstream data. signals Transmission, broach 2 are used for the transmission of uplink reference signals.
Such scheme transmits while can realizing data-signal and reference signal, and by by two paths of signals waiting for transmission The orthogonal transmitting of progress frequency division can reduce the interference between two paths of signals.But come simultaneously because multiple subcarriers are divided into two broach Single-carrier property is destroyed when transmitting data-signal and reference signal, therefore transmitting on the same antenna, higher so as to cause PAPR.
In addition, existing technology can also use the method being multiplexed with two-way time-domain signal.For example, first via time domain Signal sequence is a0,a1,…,aN-1, it is denoted as { ai}；Second road time-domain signal sequence is b0,b1,…,bN-1, it is denoted as { bi}.From The preceding time division multiplexing for carrying out two-way time-domain signal sequence of Fourier transformation (Discrete Fourier Transform, DFT) is dissipated, Form time-domain signal sequence a0,a1,…,aN-1,b0,b1,…,bN-1.If first via time-domain signal sequence and the second tunnel time domain letter Number sequence be all low PAPR sequence (for example, two-way time-domain signal sequence for the time domain waveform of DFT-S-OFDM forms or other Low PAPR single carrier wave time domain waveform), then it is low can to ensure that the time-domain signal sequence after being time-multiplexed remains as aforesaid operations PAPR sequence.However, the program can cause two-way transmission signal being done after channel because multi-path effect is present between signal Disturb, interference is larger.Particularly different spatial domain precoding/wave beams is have passed through when two paths of signals is and sent During signal after figuration (Precoding/Beamforming), interference is difficult to be eliminated by common balancing technique.
The content of the invention
The embodiment of the present invention provides a kind of method and the network equipment of transmission signal, and the ebb that signal can be kept to transmit is equal Than, and reduce the interference between signal.
First aspect of the embodiment of the present invention provides a kind of method of transmission signal, including：
First ray { x of the first network equipment by length for LP0,x1,...,xL·P-1It is mapped to the first subcarrier group The first set for including LP subcarrier on, the first subcarrier group includes B subcarrier being continuously spacedly distributed {c0,c1,...,cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤ LK, P≤K, B, P, K, L are positive integer, L>1；Sequential element x in the First rayi+l·PIt is mapped to first collection The subcarrier c of conjunctionr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i =0,1,2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, L=0~L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
The first network equipment sends signal according to the signal generation on the subcarrier of the first subcarrier group；
The first network equipment sends the transmission signal.
Specifically, K is positive integer, and the sequence overall length of multichannel signal to be sent is less than or equal to K；L is positive integer, table Show number of repetition, it is relevant with the way of multichannel signal to be sent.The first set is subcarrier cr(i)+l·KCollection Close, the sub-carrier number of the first set is more than or equal to the signal that the First ray is mapped in the first set and taken Subcarrier number, further, according to first sequence of the signal generation on the subcarrier of the first subcarrier group The time-domain signal and other time-domain signals sent corresponding to row meets single-carrier property when sending together, i.e., in the presence of at least two sequences During row, the time-domain signal sent at least two sequences corresponding to each sequence meets single-carrier property when sending together.
The method for the transmission signal that first aspect provides, the low peak average ratio that signal can be kept to transmit, while first set Subcarrier it is not overlapping with the subcarrier of other set, therefore the interference in transmitting procedure between signal can be reduced.
In a kind of mode in the cards, two-way signal to be sent be present, the first network equipment can be directed to second The transmission signal of sequence generation second is simultaneously sent, specifically：
Second sequence { y of the first network equipment by length for LQ0,y1,...,yL·Q-1It is mapped to described first In the second set for including LQ subcarrier of subcarrier group；Q≤K, Q are positive integer；Sequent in second sequence Plain yi+l·QIt is mapped to the subcarrier c of the second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q= bi·e2πvj·l/L；Wherein, i is variable, i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, S (i) value is different, and l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0, b1,...,bQ-1It is the sequence that length is Q.
In this kind of mode in the cards, the process for being mapped to the second set can be with being mapped to the first set Process perform simultaneously, can also be performed before or after the process of the first set is mapped to.Now, first son carries Signal on the subcarrier of ripple group includes the signal on signal and the second set in the first set, first net Network equipment sends signal according to the signal generation on the signal in the first set and the second set.
In a kind of mode in the cards, there is no identical subcarrier in the first set and the second set, It is now frequency division multiplexing, the interference between First ray described in transmitting procedure and second sequence can be avoided.This kind can The mode that can be realized, applied to two channel multiplexings, low peak average ratio and can be kept to reduce the interference between signal.
In a kind of mode in the cards, the first set is identical with the subcarrier in the second set, It is now code division multiplexing, frequency spectrum resource utilization rate can be improved.
In a kind of mode in the cards, the B, the P, the Q, the L and the K meet following relation：B= (L-1) K+P+Q, P+Q≤K.
In a kind of mode in the cards, if the first signal to be sent corresponding to the First ray is data-signal, Then first network equipment signal { h to be sent to described first0,h1,...,hP-1Carry out discrete Fourier transform DFT obtain {a0,a1,a2,...,aP-1, according to { a0,a1,a2,...,aP-1The First ray is obtained, then the First ray is carried out Transmission process so that the embodiment of the present invention can also applied data signal transmission.
In a kind of mode in the cards, { a0,a1,a2,...,aP-1It is reference signal sequence, or to be described with reference to letter The sequence of number sequence and the product of the described first signal to be sent；Wherein, the reference signal sequence can be Zadoff-Chu sequences The sequence of column-generation, or can be the sequence of LTE reference signals.To { b0,b1,...,bQ-1In similarly.Wherein, the Zadoff- Sequence, the sequence of the LTE reference signals of Chu sequences generation can represent known signal, and signal to be sent can represent carrying letter The signal of breath.
In a kind of mode in the cards, { a0,a1,...,aP-1BeAnd/or {b0,b1,...,bQ-1BeWherein, en, n=0,1,2 ..., P-1 are sequence, P=Q, α1, α2For real number.In other words, { a0,a1,...,aP-1And { b0,b1,...,bQ-1It is sequence en, n=0,1,2 ..., P-1's Time domain shift sequence.
In a kind of mode in the cards, subcarrier cr(i)+l·KIn { r (i) }, i=0~P-1 for 0,1,2 ..., K-1 } in continuous P element, further, for any 0 ＜ l ＜ L, subcarrier cr(i)+l·KFor the first subcarrier group In continuous subcarrier.Similarly { s (i) }, i=0~Q-1 are continuous Q element in { 0,1,2 ..., K-1 }.
In a kind of mode in the cards, subcarrier cr(i)+l·KIn { r (i) }, i=0~P-1 for 0,1,2 ..., K-1 } at intervals of JrContinuous P element, wherein, JrFor positive integer, i.e., in sequence { 0,1,2 ..., K-1 } at interval of JrAn element is taken, until P element is taken, further, for any 0 ＜ l ＜ L, subcarrier cr(i)+l·KFor the described first son At intervals of J in carrier wave setrContinuous subcarrier.Similarly { s (i) }, i=0~Q-1 in { 0,1,2 ..., K-1 } at intervals of Js Continuous Q element, JrWith JsIt is able to can also be differed with identical.At intervals of JrFor representing n-th of subcarrier and the n-th+Jr Interval between individual subcarrier, n are nonnegative integers.Such as at intervals of 1 between the 1st subcarrier and the 2nd subcarrier.
In a kind of mode in the cards, the first network equipment sends or received control signaling, the control Signaling is used to indicate the phase place parameter information that the First ray is mapped in the first set, the phase place ginseng Number information includes the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, the first set subcarrier At least one of number LP, phase rotation coefficient relevant information u.The phase place parameter information is described available for informing Send the subcarrier number of receiving terminal (can be second network equipment) described first set of signal, phase in the first set Twiddle factor relevant information u, twiddle factor information e2πvj(s(i)+l·K)/(L·K)Or ai·e2πuj·l/LEtc. at least one in information, So that the receiving terminal of the transmission signal is demodulated according to these information.If at least one sequence be present, the control letter Make for indicating at least one sequence each sequence mapping to correspondingly collecting the phase place parameter information closed.
Second aspect of the embodiment of the present invention provides a kind of method of transmission signal, including：
Second network equipment receives First ray from the first set for including LP subcarrier of the first subcarrier group Corresponding first reception signal；The first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,..., cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group；The First ray {x0,x1,...,xL·P-1Be LP for the length that is carried on the subcarrier of the first set sequence, B≤LK, P≤ K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the son of the first set Carrier wave cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
Second network equipment carries out signal transacting to first reception signal.
The method for the transmission signal that second aspect provides, First ray pair is received from the first set of the first subcarrier group The first reception signal answered, and signal transacting is carried out to the first reception signal, due to the time domain letter sent corresponding to First ray Number and other time-domain signals have that the interference between low peak average ratio and signal is small when sending together, therefore second network equipment can solve Recall the higher signal of accuracy.
In a kind of mode in the cards, there is two sequences (First ray and the in the first subcarrier group Two sequences), second network equipment receives from the second set for including LQ subcarrier of the first subcarrier group Second reception signal corresponding to second sequence；Second sequence is { y0,y1,...,yL·Q-1Be carried in the second set Subcarrier on length be LQ sequence, Q≤K, Q are positive integer；Sequential element y in second sequencei+l·QMapping To the subcarrier c of the second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi·e2πvj·l/L；Its In, i is variable, and i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, s (i) value is not Together, l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0,b1,...,bQ-1It is long Spend the sequence for Q；.
In this kind of mode in the cards, receiving the process of second reception signal can receive with receiving described first The process of signal performs simultaneously, can also be performed before or after the process of first reception signal is received, similarly to described The process that second transmission signal carries out signal transacting can be held simultaneously with carrying out the process of signal transacting to first reception signal OK, can also be performed before or after the process of signal transacting is carried out to the described second transmission signal.
In a kind of mode in the cards, there is no identical subcarrier in the first set and the second set, Or the first set is identical with the subcarrier in the second set.
In a kind of mode in the cards, the B, the P, the Q, the L and the K meet following relation：B= (L-1) K+P+Q, P+Q≤K.
In a kind of mode in the cards, { a0,a1,a2,...,aP-1It is reference signal sequence, or to be described with reference to letter The sequence of number sequence and the product of the described first signal to be sent；Wherein, the reference signal sequence can be Zadoff-Chu sequences The sequence of column-generation, or can be the sequence of LTE reference signals.For second sequence similarly.
In a kind of mode in the cards, { a0,a1,...,aP-1BeAnd/or {b0,b1,...,bQ-1BeWherein, en, n=0,1,2 ..., P-1 are sequence, P=Q, α1, α2For real number.
In a kind of mode in the cards, { r (i) }, i=0~P-1 is continuous P member in { 0,1,2 ..., K-1 } Element.{ s (i) }, i=0~Q-1 are continuous Q element in { 0,1,2 ..., K-1 }.
In a kind of mode in the cards, { r (i) }, i=0~P-1 is at intervals of J in { 0,1,2 ..., K-1 }r's Continuous P element, wherein, JrFor positive integer.{ s (i) }, i=0~Q-1 in { 0,1,2 ..., K-1 } at intervals of JsCompany Q continuous element, wherein, JsFor positive integer.
In a kind of mode in the cards, second network equipment receives or sent control signaling, the control Signaling can be sent by the first network equipment, and the control signaling is used to indicate that the First ray is mapped to first collection The phase place parameter information closed, the phase place parameter information include the K, twiddle factor information e2 πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, the first set subcarrier number LP, phase rotation coefficient relevant information u At least one of.If at least one sequence be present, the control signaling is used to indicate each at least one sequence Sequence mapping is to correspondingly collecting the phase place parameter information that closes.
The third aspect of the embodiment of the present invention provides a kind of first network equipment, including：
Processing module, for the First ray { x by length for LP0,x1,...,xL·P-1It is mapped to the first subcarrier group The first set for including LP subcarrier on, the first subcarrier group includes B subcarrier being continuously spacedly distributed {c0,c1,...,cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤ LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to described first The subcarrier c of setr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is change Amount, i=0,1,2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is just Integer, l=0~L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
The processing module, the signal generation being additionally operable on the subcarrier according to the first subcarrier group send signal；
Sending module, for sending the transmission signal.
The first network equipment that the third aspect of the embodiment of the present invention provides carries for performing first aspect of the embodiment of the present invention The method of the transmission signal of confession, will not be repeated here.
Fourth aspect of the embodiment of the present invention provides a kind of second network equipment, including：
Receiving module, for receiving First ray from the first set for including LP subcarrier of the first subcarrier group Corresponding first reception signal；The first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,..., cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group；The First ray {x0,x1,...,xL·P-1Be LP for the length that is carried on the subcarrier of the first set sequence, B≤LK, P≤ K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the son of the first set Carrier wave cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
Processing module, for carrying out signal transacting to first reception signal.
Second network equipment that fourth aspect of the embodiment of the present invention provides carries for performing second aspect of the embodiment of the present invention The method of the transmission signal of confession, will not be repeated here.
The aspect of the embodiment of the present invention the 5th provides another first network equipment, including processor, transceiver and memory, For performing the offer of first aspect of the embodiment of the present invention, and each device of first network equipment that the 5th aspect provides can be with It is corresponding with the first network equipment corresponding module that the third aspect provides.
The aspect of the embodiment of the present invention the 6th provides another second network equipment, including processor, transceiver and memory, For performing the offer of second aspect of the embodiment of the present invention, and each device of second network equipment that the 6th aspect provides can be with It is corresponding with the second network equipment corresponding module that fourth aspect provides.
The aspect of the embodiment of the present invention the 7th provides a kind of system of transmission signal, including the first network that the third aspect provides Second network equipment that equipment and fourth aspect provide, or the first network equipment provided including the 5th aspect and the 6th aspect carry Second network equipment supplied.
In embodiments of the present invention, the First ray { x by length for LP is passed through0,x1,...,xL·P-1It is mapped to first In the first set for including LP subcarrier of subcarrier group, the first subcarrier group includes B son being continuously spacedly distributed Carrier wave { c0,c1,...,cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤ LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in First rayi+l·PIt is mapped to the son of first set Carrier wave cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；Carried according to the first son Signal generation on the subcarrier of ripple group sends signal and sends the transmission signal of generation, so that being sent out corresponding to First ray The time-domain signal and other time-domain signals sent meets single-carrier property when sending together, and the ebb that signal can be kept to transmit is equal Than, and reduce the interference between the time-domain signal sent corresponding to First ray and other time-domain signals.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the configuration diagram using the communication system of the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the method for the transmission signal that the embodiment of the present invention one provides；
Fig. 3 a and Fig. 3 b are a kind of schematic diagram of frequency domain resource mapping provided in an embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the method for the transmission signal that the embodiment of the present invention two provides；
Fig. 5 is the schematic flow sheet of the method for the transmission signal that the embodiment of the present invention three provides；
Fig. 6 is the schematic flow sheet of the method for the transmission signal that the embodiment of the present invention four provides；
Fig. 7 is the schematic diagram of another frequency domain resource mapping provided in an embodiment of the present invention；
Fig. 8 is the schematic flow sheet of the method for the transmission signal that the embodiment of the present invention five provides；
Fig. 9 is schematic flow sheet of the embodiment illustrated in fig. 8 before step 601 is performed；
Figure 10 a provide a kind of structural representation of first network equipment for the embodiment of the present invention；
Figure 10 b provide the structural representation of another first network equipment for the embodiment of the present invention；
Figure 11 a provide a kind of structural representation of second network equipment for the embodiment of the present invention；
Figure 11 b provide the structural representation of another second network equipment for the embodiment of the present invention.
Embodiment
The term " part " that uses in this manual, " module ", " system " etc. be used to representing the related entity of computer, Hardware, firmware, the combination of hardware and software, software or executory software.For example, part can be but not limited to, handling Process, processor, object, executable file, execution thread, program and/or the computer run on device.Transport on the computing device Capable application and computing device can be parts.One or more parts can reside in process and/or execution thread, part It can be located on a computer and/or be distributed between 2 or more computers.In addition, these parts can be deposited from above The various computer-readable mediums for containing various data structures perform.Part can be according to one or more packet (examples Data such as from two parts interacted with local system, distributed system and/or internetwork another part, such as pass through The internet of signal and other system interactions) signal communicated by locally and/or remotely process.
It should be understood that the technical scheme of the embodiment of the present invention can apply to LTE frameworks, can also lead to applied to General Mobile Letter system (Universal Mobile Telecommunications System, UMTS) land radio access web (UMTS Terrestrial Radio Access Network, UTRAN) framework, or GSM/ enhanced data rates for gsm evolution Wireless access network (the GSM EDGE Radio of (Enhanced Data Rate for GSM Evolution, EDGE) system Access Network, GERAN) framework.In UTRAN frameworks or/GERAN frameworks, mobile management entity (Mobile Management Entity, MME) function be engaged in (General Packet Radio by service universal packet wireless business Service, GPRS) supporting node (Serving GPRS Support, SGSN) completion, SGW (Signaling Gate Way, SGW) the function of public data network gateway (Packet Data Network Gateway, PGW) supported by gateway GPRS Node (Gateway GPRS Support Node, GGSN) is completed.The technical scheme of the embodiment of the present invention can also be applied to it His communication system, such as public land mobile network (Public Land Mobile Network, PLMN) system, or even future 5G communication systems etc., the embodiment of the present invention is not construed as limiting to this.
First network equipment in the embodiment of the present invention can be the equipment for being communicated with terminal device, for example, Can be in base station (Base Transceiver Station, BTS) or the WCDMA system in gsm system or CDMA Base station (NodeB, NB), can also be in LTE system evolved base station (Evolutional Node B, eNB or ENodeB), or first network equipment can be relay station, access point, mobile unit, wearable device and following 5G networks In network side equipment or following evolution PLMN networks in the network equipment etc..
Second network equipment in the embodiment of the present invention is terminal device, can be cell phone, wireless phone, session initiation Dynamic agreement (Session Initiation Protocol, SIP) phone, WLL (Wireless Local Loop, WLL) stand, personal digital assistant (Personal Digital Assistant, PDA), have the hand-held of radio communication function set Standby, computing device is connected to other processing equipments of radio modem, mobile unit, wearable device, following 5G nets Terminal device in network etc..
In addition, various aspects of the invention or feature can be implemented as method, apparatus or use standard program and/or engineering The product of technology.Term " product " used herein is covered can be from any computer-readable device, carrier or medium access Computer program.For example, computer-readable medium can include, but are not limited to:Magnetic memory device (for example, hard disk, floppy disk or Tape etc.), CD (for example, compact disk (Compact Disk, CD), digital universal disc (Digital Versatile Disk, DVD) etc.), smart card and flush memory device are (for example, Erarable Programmable Read only Memory (Erasable Programmable Read-Only Memory, EPROM), card, rod or Keyed actuator etc.).In addition, various storage media described herein can generation Table is used for one or more equipment of storage information and/or other machine readable medias.Term " machine readable media " may include But it is not limited to, wireless channel and the various other media that can store, include and/or carry instruction and/or data.
Fig. 1 is the configuration diagram using the communication system of the embodiment of the present invention.As shown in figure 1, the communication system 100 is wrapped First network equipment 102 is included, first network equipment 102 may include multiple antennas, such as the and of antenna 104,106,108,110,112 114.In addition, first network equipment 102 can additionally include transmitter chain and receiver chain, those of ordinary skill in the art can be with Understand, they may each comprise sends and receives related multiple parts (such as processor, modulator, multiplexer, demodulation to signal Device, demultiplexer or antenna etc.).
First network equipment 102 can communicate with second network equipment 116 and second network equipment 122, can also and its Its second network device communications.Second network equipment 116 and 122 can be such as cell phone, smart phone, portable electric Brain, handheld communication devices, handheld computing device, satellite radio, global positioning system, PDA and/or in channel radio Any other suitable equipment to be communicated in letter system 100.
As shown in figure 1, second network equipment 116 communicates with antenna 112 and 114, wherein antenna 112 and 114 by it is preceding to Link 118 sends information to second network equipment 116, and by reverse link 120 from the receive information of second network equipment 116. In addition, second network equipment 122 communicates with antenna 104 and 106, wherein antenna 104 and 106 passes through forward link 124 to second The network equipment 122 sends information, and by reverse link 126 from the receive information of second network equipment 122.
For example, in FDD (Frequency Division Duplex, FDD) system, for example, forward link 118 Available different frequency bands used in reverse link 120, forward link 124 it is available used in reverse link 126 not Same frequency band.
For another example in time division duplex (Time Division Duplex, TDD) system and full duplex (Full Duplex) In system, common frequency band can be used in forward link 118 and reverse link 120, and forward link 124 and reverse link 126 can be used Common frequency band.
The each antenna (or the antenna sets being made up of multiple antennas) and/or region for being designed to communication are referred to as second The sector of the network equipment 102.For example, antenna sets can be designed as and in the sector of the overlay area of second network equipment 102 Two network device communications.First network equipment 102 by forward link 118 and 124 respectively with second network equipment 116 and During 122 are communicated, the transmitting antenna of first network equipment 102 can improve forward link 118 using beam forming With 124 signal to noise ratio.In addition, signal is sent to its second all network equipment by individual antenna with first network equipment Mode is compared, second network equipment in first network equipment 102 using beam forming random dispersion into associated coverage During 116 and 122 transmission signal, second network equipment in neighbor cell can be by less interference.
First network equipment 102, second network equipment 116 or second network equipment 122 can be that radio communication sends dress Put and/or radio communication receiver.When sending out data, radio communication transmitter can be encoded to data for passing It is defeated.Specifically, radio communication transmitter can obtain (such as generation, from other communicators receive or preserve in memory Deng) to be sent by channel to the data bit of the certain amount of radio communication receiver.This data bit can be included in In the transmission block (or multiple transmission blocks) of data, transmission block can be segmented to produce multiple code blocks.
It should be understood that the embodiment of the present invention can apply to 120 shown in uplink, such as Fig. 1 and 126, can also Applied to 118 shown in downlink transfer, such as Fig. 1 and 124.Fig. 1 is the rough schematic view illustrated, and may be used also in communication system Including other network equipments, not drawn in Fig. 1.
Based on the configuration diagram of the communication system shown in Fig. 1, the embodiment of the present invention provides a kind of method of transmission signal, The low peak average ratio that signal can be kept to transmit, and reduce the interference in signals transmission between signal.
Detailed Jie is carried out to the method for transmission signal provided in an embodiment of the present invention below in conjunction with accompanying drawing 2- accompanying drawings 9 Continue.
Fig. 2 is referred to, the schematic flow sheet of the method for the transmission signal provided for the embodiment of the present invention one.Need what is illustrated It is that the embodiment one shown in Fig. 2 mainly introduces first network equipment and sends multichannel signal Zhong Mou roads signal to be sent to be sent Process.
201, First ray { x of the first network equipment by length for LP0,x1,...,xL·P-1It is mapped to the first son load In the first set for including LP subcarrier of ripple group.
Wherein, the First ray { x0,x1,...,xL·P-1Delivered letters for multichannel signal Zhong Mou roads to be sent are pending Sequence corresponding to number, can be by the First ray { x0,x1,...,xL·P-1Corresponding to certain road signal to be sent to be referred to as first pending The number of delivering letters.First signal to be sent may be data-signal, it is also possible to be reference signal.The reference signal can be up Reference signal (demodulated reference signal, detection reference signal), or downlink reference signal (cell special reference, user Terminal-specific reference signal, multicast/multicast single-frequency network network (Multicast Broadcast Single Frequency Network, MBSFN) reference signal).The data-signal can be the data-signal for carrying control information, or carry to be passed The data-signal of transmission of data information.The control information can be ascending control channel carrying ascending control information, such as physics The ascending control information carried on uplink control channel (Physical Uplink Control Channel, PUCCH)； Or the Downlink Control Information of down control channel carrying, such as physical downlink control channel (Physical Downlink Control Channel, PDCCH) on the Downlink Control Information that carries.The information to be transmitted can be broadcast channels carry common System information, such as the information carried on Physical Broadcast Channel (Physical Broadcast Channel, PBCH), or for same The synchronizing signal of step, such as master sync signal (Primary Synchronization Signal, PSS) or auxiliary synchronous signals (Secondary Synchronization Signal, SSS) etc..The data-signal, which can also be, is carried on upstream data letter Signal on road, such as it is carried on Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) and holds The signal of load；Or the signal in downstream data channel is carried on, such as it is carried on Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) etc..
If first signal to be sent is the data-signal, the data-signal can be modulation after signal, example Such as QPSK (Quadrature Phase Shift Keying, QPSK), the quadrature amplitude modulation of 16 kinds of symbols (Quadrature Amplitude Modulation, QAM), the signal after the QAM modulation of 64 kinds of symbols, then first net Network equipment carries out discrete Fourier transform (Discrete Fourier Transform, DFT) to the described first signal to be sent Obtain the sequence { a that length is P0,a1,a2,...,aP-1, the sequential element x in the First rayi+l·PWith { a0,a1, a2,...,aP-1Sequential element aiBetween relation obtain the First ray, then the First ray is mapped to described In the first set of one subcarrier group.
If first signal to be sent is the reference signal, directly by { a0,a1,a2,...,aP-1Corresponding to One sequence mapping in the first set of the first subcarrier group without carrying out discrete Fourier transform.
{a0,a1,a2,...,aP-1Can be reference signal sequence, can also be the reference signal sequence is treated with first Send the sequence of the product of signal.It is understood that now the described first signal to be sent is the signal of carrying information, it is described Reference signal sequence is the sequence of known signal, such as the sequence that the uplink reference signals in LTE system use.It is for example, described Reference signal sequence and the sequence of the product of the described first signal to be sent are (sx0,s·x1,s·x2,...,s·xN-1), Wherein s represents first signal to be sent, such as can be the signal after modulation, (x0,x1,x2,...,xN-1) represent length For the N reference signal sequence.
The reference signal sequence can also be the sequence for pricking doffer-just (Zadoff-Chu) sequence generation.Zadoff- Chu sequences have a good autocorrelation, i.e., arbitrary Zadoff-Chu sequence with behind its cyclic shift n positions gained itself except Sequence it is uncorrelated, i.e., correlation is zero.The Zadoff-Chu sequence of different indexs with equal length may be with good Cross correlation, cross correlation value is close to zero.Zadoff-Chu sequence has low PAPR.Zadoff-Chu sequence is by quick Fourier transformation (Fast Fourier Transformation, FFT) or inverse fast fourier transform (Inverse Fast Fourier Transformation, IFFT) after, remain as Zadoff-Chu sequence.Zadoff-Chu sequence can be expressed as Following form：
When N is odd number, n=0,1,2 ..., N-1；
When N is even number, n=0,1,2 ..., N-1.
Wherein, N is the length of Zadoff-Chu sequence；Q is the natural number relatively prime with N, and 0 ＜ q ＜ N, is Zadoff- The index of Chu sequences, different q values correspond to different Zadoff-Chu sequences；L is integer, is the cyclic shift value of ZC sequences. Such as N=11, q value can be 1~10.The First ray can also be the sequence of Zadoff-Chu sequence generation With the sequence of the product of the described first signal to be sent, similarly the described first signal to be sent is the signal of carrying information, The sequence of Zadoff-Chu sequence generation is the sequence of known signal.
The reference signal sequence is the sequence of Zadoff-Chu sequence generation, can also be specifically Zadoff-Chu sequences Row pass through cyclic extension or the sequence of interception generation.
The first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,...,cB-1, described first The subcarrier number of subcarrier group is B, B≤LK.cqExpression the first subcarrier group in the q that is continuously spacedly distributed The numbering of individual subcarrier, for example, cqIt is numbering of the B subcarrier according to frequency from high to low or from low to high. The subcarrier that the first subcarrier group includes continuously being spacedly distributed is advantageous in that, can obtain lower PAPR.Wherein, K is positive integer, is for determining the subcarrier number of the First ray parameter, multichannel signal Zhong Mei roads to be sent are treated The sequence overall length that the sequence length of transmission signal is superimposed to obtain is less than or equal to K；L is positive integer, L ＞ 1, K multiple is represented, with institute State that the way of multichannel signal to be sent is relevant, L can be identical with the way of multichannel signal to be sent.The sequence of the First ray Row length P is less than or equal to K, when P is less than K, for staying position to other path channels, and if the way of multichannel signal to be sent is more, Then P is far smaller than sequence length LP of the sub-carrier number more than or equal to the First ray of first set described in K.
Wherein, the sequential element x in the First rayi+l·PIt is mapped to subcarrier cr(i)+l·K, xi+l·P=ai·e2 πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L, wherein, i is variable, i=0,1,2 ..., P-1, r (i) ∈ 0,1, 2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, l=0~L-1, u ∈ { 0,1 ..., L-1 }, J is the imaginary part of plural number.Subcarrier cr(i)+l·KThe set formed is the first set, and the first set is described the A set in one subcarrier group, the first set include one in multiple set that the first subcarrier group may include Individual, the quantity specifically gathered is relevant with the way of the multichannel of frequency division multiplexing, code division multiplexing signal to be sent.For frequency division multiplexing, Subcarrier in multiple set does not have identical；For code division multiplexing, the subcarrier in multiple set is identical.
Subcarrier cr(i)+l·KIn { r (i) }, i=0~P-1 is continuous P element, example in { 0,1,2 ..., K-1 } Such as { r (i) }, i=0~P-1 is { 0,1,2 ..., P-1 }.Subcarrier corresponding to the sequence of the signal to be sent on other roads can be with It is different continuous Q elements.
Subcarrier cr(i)+l·KIn { r (i) }, i=0~P-1 in { 0,1,2 ..., K-1 } at intervals of JrContinuous P Individual element, wherein, JrFor positive integer, i.e., at interval of J in sequence { 0,1,2 ..., K-1 }rAn element is taken, until taking P member Element, Jr=1 is one of special case.Jr=L is another special case, can there is lower PAPR.
Such as having L roads signal, the sequence length per road signal is P, is mapped to per P element of the sequence of road signal described On LP subcarrier of the first subcarrier group, such as first via signal is mapped to the first set of the first subcarrier group, the Two road signals are mapped to second set of the second subcarrier group etc..Subcarrier number c corresponding to the first setq's Subscript q for 0,1 ..., P-1；K,K+1,...,K+P-1；...；(L-1) K, (L-1) K+1 ..., (L-1) K+P-1 }, it is described Subcarrier number c corresponding to second setqSubscript q for P, P+1 ..., 2P-1；K+P,K+P+1,...,K+2P-1；...； (L-1) K+P, (L-1) K+P+1 ..., (L-1) K+2P-1 }, similarly, subcarrier number c corresponding to the 3rd setqUnder Mark q for 2P, 2P+1 ..., 3P-1；K+2P,K+2P+1,...,K+3P-1；...；(L-1)K+2P,(L-1)K+2P+1,..., (L-1)K+3P-1}。
202, the first network equipment sends signal according to the signal generation on the subcarrier of the first subcarrier group.
Specifically, because the signal on the subcarrier of the first subcarrier group is the signal on frequency domain, therefore described the One network equipment transforms to the signal on the subcarrier of the first subcarrier group in time domain, and generation sends signal, the hair The number of delivering letters is radio frequency (Radio Frequency, RF) signal.Optionally, the first network equipment is in the first set Element carry out IFFT convert to obtain the transmission signal.
203, the first network equipment sends the transmission signal.
Specifically, the first network equipment sends the transmission signal by antenna port, i.e., to the first network Second network equipment in equipment coverage sends radiofrequency signal.
Specifically, the subcarrier number of the first subcarrier group is B, the phase rotation coefficient in first set is e2 πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, subcarrier number of the first set in the first subcarrier group, it is cr(i)+l·K, i=0,1 ..., P-1, l=0,1 ..., L-1, work as cqDuring=q, the subcarrier number in the first subcarrier group is { q =0,1,2 ..., B-1, subcarrier number in first set for r (i)+lK, i=0,1 ..., P-1, l=0, 1,...,L-1}.Wherein, the phase rotation coefficient of the first set represents the phase place acted on the First ray .If L=2, u=0 or u=1, as u=0, the phase rotation coefficient on all subcarriers of the first set is 1； As u=1, the subcarrier c of the first setr(i)+l·K, i=0,1 ..., P-1, l=0,1 ..., the phase rotation on L-1 Transposon is e2πj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L.The first network equipment in Downlink Control Information by carrying The frequency domain resource information of the First ray occupancy, the phase rotation coefficient in the frequency domain resource, K, phase rotation coefficient are related Information u and the first set subcarrier number LP, are notified to second network equipment.The Downlink Control Information can be with Sent by PDCCH channels, second network equipment can obtain above-mentioned frequency domain resource from PDCCH channels.
In embodiments of the present invention, the First ray { x by length for LP is passed through0,x1,...,xL·P-1It is mapped to first In the first set for including LP subcarrier of subcarrier group, the first subcarrier group includes B son being continuously spacedly distributed Carrier wave { c0,c1,...,cB-1, cqIt is the numbering according to frequency from high to low or from low to high of the B subcarrier, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in First rayi+l·PIt is mapped to subcarrier cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；Carried according to the first son Signal generation on the subcarrier of ripple group sends signal and sends the transmission signal of generation, so that being sent out corresponding to First ray The time-domain signal and other time-domain signals sent meets single-carrier property when sending together, and the ebb that signal can be kept to transmit is equal Than, and reduce the interference between the time-domain signal sent corresponding to First ray and other time-domain signals.
Fig. 3 a and Fig. 3 b are referred to, for the schematic flow sheet of frequency domain resource provided in an embodiment of the present invention mapping.Need Bright, Fig. 3 a and Fig. 3 b citings introduce two sequences (First ray and the second sequence) in the mapping process of frequency domain resource.Such as Shown in Fig. 3 a and Fig. 3 b, First ray is mapped to the subcarrier represented by Fig. 3 a and Fig. 3 b black regions, and the second sequence mapping arrives Subcarrier represented by Fig. 3 a and Fig. 3 b white portions, each black region represent P subcarrier, and each white portion represents Q Individual subcarrier.From Fig. 3 a and Fig. 3 b, the subcarrier spacing arrangement after mapping, black region is not present with white portion and handed over It is folded.L=2, B≤2K, B=P+Q+K, P+Q≤K, Q ≠ P or Q=P.In embodiments of the present invention, B, P, Q, L and K meet such as Lower relation：B=(L-1) K+P+Q, P+Q≤K.
Fig. 3 a and Fig. 3 b show P+Q ＜ K situation, and the First ray and second sequence do not have what is taken Signal on subcarrier defaults to 0, due to the orthogonal reliability that can improve transmission of two paths of signals frequency division.Wherein, first it is black The subcarrier number in color region is Cr(i), the subcarrier number of first black region is Cr(i)+K；The son of first white portion Carrier index is Cs(i), the subcarrier number of first black region is Cs(i)+K.2P subcarrier corresponding to black region is One set, 2Q subcarrier corresponding to white portion is second set.Fig. 3 a and Fig. 3 b differences are, B=2K in Fig. 3 a, Including the subcarrier shown in hatched example areas；B ＜ 2K in Fig. 3 b, not including the subcarrier shown in hatched example areas.
Fig. 4 is referred to, the schematic flow sheet of the method for the transmission signal provided for the embodiment of the present invention two.Need what is illustrated It is that the embodiment two shown in Fig. 4 mainly introduces the process that first network equipment sends two-way signal to be sent.Implement shown in Fig. 4 It is will not be described in great detail in example with the same or analogous part of embodiment illustrated in fig. 2.
First network equipment by First ray and the second sequence be respectively mapped to first set in the first subcarrier group and In second set, IFFT is carried out to the signal in the first set and the second set and converts to obtain transmission signal, concurrently Send the transmission signal.
In embodiments of the present invention, the First ray and/or second sequence can be sequence corresponding to data-signal It is one or two kinds of in sequence corresponding to row or reference signal in sequence, such as embodiment illustrated in fig. 2, can be by described the Certain road signal to be sent corresponding to one sequence is referred to as the first signal to be sent, certain road signal to be sent corresponding to second sequence Referred to as second signal to be sent.Second sequence { the y0,y1,...,yL·Q-1Length be LQ, Q≤K, Q are positive integer；Institute State the sequential element y in the second sequencei+l·QIt is mapped to subcarrier cs(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi·e2πvj·l/L；Wherein, i is variable, i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for not Same i values, s (i) value is different, and l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the void of plural number Portion；{b0,b1,...,bQ-1It is the sequence that length is Q.
Wherein, there is no identical subcarrier in the first set and the second set, be now frequency division multiplexing；It is described First set is identical with the subcarrier in the second set, is now code division multiplexing.
For code division multiplexing, { a0,a1,...,aP-1BeAnd/or { a0,a1,...,aP-1} ForWherein, en, n=0,1,2 ..., P-1 are sequence, P=Q, α1, α2For real number.In other words, {a0,a1,...,aP-1And/or { b0,b1,...,bQ-1It is sequence en, n=0,1,2 ..., P time domain shift sequence, i.e. { a0, a1,...,aP-1And { b0,b1,...,bQ-1Be same sequence time domain shift sequence.
Similarly, subcarrier cs(i)+l·KIn { s (i) }, i=0~Q-1 is continuous Q element in { 0,1,2 ..., K-1 }. Subcarrier cs(i)+l·KIn { s (i) }, i=0~Q-1 in { 0,1,2 ..., K-1 } at intervals of JsContinuous Q element, JrWith JsIt can also be differed with identical, work as JrWith JsWhen identical, such as it is equal to 1.Or it is equal to L (such as L=when two-way 2, Jr=Js=2), there can be Q=P, naturally it is also possible to have Q ≠ P, so can neatly carry out resource allocation, not require two-way The frequency resource size that signal takes is identical, and keeps low PAPR characteristics well.Wherein at intervals of JsFor representing N-th of subcarrier and the n-th+JsInterval between individual subcarrier, n are nonnegative integers.Such as the 1st subcarrier and the 2nd son carry At intervals of 1 between ripple.
Fig. 7 is referred to, for the schematic diagram of another frequency domain mapping provided in an embodiment of the present invention.The first son shown in Fig. 7 Carrier wave set shares 16 subcarriers, wherein L=2, K=8.First set is 8 subcarriers that secondary series marks grey in Fig. 7, Second set is 4 subcarriers of the 3rd row mark grey in Fig. 7, and the length of First ray is 4, is mapped to the 8 of first set Individual subcarrier, { r (i):I=0,1,2,3 } it is { 0,2,4,6 }；The length of second sequence is 2, is mapped to 4 sons of second set Carrier wave, { s (i):I=0,1 } it is { 1,5 }.Numbering c corresponding to the subcarrier of first setiI be：{0,2,4,6；8,10,12, 14 }, numbering c corresponding to the subcarrier of second setiI be：{1,5；9,13}.
In general, if P corresponding to the First ray is different with Q corresponding to second sequence, and described first Collection close it is identical with the power of the signal in the second set on each subcarrier, then it is corresponding after IFFT described the The mean power of time-domain signal corresponding to one sequence and second sequence will have difference because of the difference of subcarrier number, PAPR is caused to increase.Therefore, when the P of the First ray is with the second sequence Q differences, believe corresponding to the First ray The power on subcarrier that signal corresponding to power and second sequence on number subcarrier taken takes The reason for ratio is Q/P, then PAPR will not be because of power configuration and increase.
In general, multiple signals are sent on the same antenna in all embodiments of the invention, and it is special still to retain low PAPR Property.
The First ray and second sequence mapping in the orthogonal resource of the frequency division in the first subcarrier group, So that interference is smaller, it is possible to increase the received signal quality of the reliability of transmission and second network equipment.
Second sequence is the sequence or Zadoff-Chu of the reference signal in reference signal sequence, such as LTE system The sequence of sequence generation, or the sequence for the reference signal sequence sequence and the product of the second signal to be sent.Described first Sequence and the time-domain signal of the corresponding transmission after IFFT of second sequence are in the element difference in crossover position Nonzero element.Wherein, crossover position refers in same two time domain sequences for including M element, the position of element in the sequence Put identical.In other words, the time-domain signal of IFFT transmissions is passed through same corresponding to the First ray and second sequence Non-zero during the element difference at moment.So, in time domain, pass through equivalent to corresponding to the First ray and second sequence Time-domain signal after IFFT is time-multiplexed, so that in two sequences by a series of conversion such as follow-up DFT, IFFT And after other processing, the signal of transmission has low PAPR.
The process of second sequence mapping can perform simultaneously with the process mapped the First ray, also can be to institute Performed before or after stating the process of First ray mapping.
Fig. 5 is referred to, the schematic flow sheet of the method for the transmission signal provided for the embodiment of the present invention three.Need what is illustrated It is that the embodiment three shown in Fig. 5 mainly introduces the process that first network equipment sends two-way signal to be sent.Implement shown in Fig. 5 It is will not be described in great detail in example with Fig. 2 or the same or analogous part of embodiment illustrated in fig. 4.
First network equipment carries out Fourier transformation to the first signal to be sent and the second signal to be sent and handles to obtain the One sequence and the second sequence, then first First ray and second sequence be respectively mapped in the first subcarrier group In set and second set, IFFT is carried out to the element in the first set and the second set and converts to obtain transmission letter Number, and send the transmission signal.
In embodiments of the present invention, the described first signal to be sent and second signal to be sent are data-signal, Need to carry out it Fourier transformation to obtain the First ray and second sequence.
Fig. 6 is referred to, the schematic flow sheet of the method for the transmission signal provided for the embodiment of the present invention four.Need what is illustrated It is that the example IV shown in Fig. 6 mainly introduces the process that first network equipment sends two-way signal to be sent.Implement shown in Fig. 6 It is will not be described in great detail in example with Fig. 2 or Fig. 4 or the same or analogous part of embodiment illustrated in fig. 5.
First network equipment carries out Fourier transformation to the second signal to be sent and handles to obtain the second sequence, then first is treated Send First ray and second sequence corresponding to signal and be respectively mapped to the first set and second in the first subcarrier group Collection is closed, and IFFT is carried out to the element in the first set and the second set and converts to obtain transmission signal, and sends institute State transmission signal.
In embodiments of the present invention, the described first signal to be sent is reference signal, and second signal to be sent is number It is believed that number, it is necessary to which carrying out Fourier transformation to the described second signal to be sent obtains second sequence.It can release, when multichannel is treated Send in signal exist at least all the way data-signal when, the first network equipment is at least data-signal Zhong Mei roads all the way Data-signal carries out discrete Fourier transform and handles to obtain at least one sequence, then to each sequence at least one sequence It is mapped in the first subcarrier group.
Based on Fig. 3 a and Fig. 3 b, and the embodiment shown in Fig. 4-Fig. 6, { r (i) }, i=0~P-1 for 0,1,2 ..., K-1 } in continuous P element, { s (i) }, i=0~Q-1 is continuous Q element in { 0,1,2 ..., K-1 }, then r (i)= 0,1 ..., P-1, s (i)=P, P+1 ..., P+Q-1, P+Q≤K.Wherein, P+Q=K situation is that continuous block frequency division is answered With.
Based on the embodiment shown in Fig. 4-Fig. 6, { r (i) }, i=0~P-1 is at intervals of J in { 0,1,2 ..., K-1 }r's Continuous P element, { s (i) }, i=0~Q-1 are at intervals of J in { 0,1,2 ..., K-1 }sContinuous Q element, Jr= Js=1, P=Q, then r (i)=2,4 ..., 2 (P-1), s (i)=1,3 ..., 2P-1, P+Q≤K.Wherein, P+Q=K situation It is continuous comb shape frequency division multiplexing.
Identical with the subcarrier in the second set for the first set, { r (i) }, i=0~P-1 is Continuous P element in { 0,1,2 ..., K-1 }, { s (i) }, i=0~Q-1 are continuous Q member in { 0,1,2 ..., K-1 } Element, P=Q situation, r (i)=s (i)=0,1 ..., P-1, P+Q≤K.
Based on the embodiment shown in Fig. 4-Fig. 6, can release, can be according to right when the signal to be sent more than two-way be present The processing method of second sequence is transmitted processing to other signals to be sent, realizes multiple channel multiplexings.For example, in the presence of During three sequences, the 3rd sequence { z0,z1,z2,...,zL·R-1Length be LR, R≤K, the sequence in the 3rd sequence Element zi+l·RIt is mapped to subcarrier cw(i)+l·K, zi+l·R=di·e2πvj(w(i)+l·K)/(L·K)Or zi+l·R=di·e2πvj·l/L, its In, i is variable, and i=0,1,2 ..., R-1, w (i) ∈ { 0,1,2 ..., K-1 }, for different i values, w (i) value is not Together, l is the imaginary part of positive integer, l=0~L-1, x ∈ { 0,1 ..., L-1 }, x ≠ u and x ≠ v, j for plural number；{d0,d1,..., dR-1It is the sequence that length is R.
There is no identical subcarrier, the 3rd set and the described first collection in 3rd set and the second set There is no identical subcarrier in conjunction so that interference is smaller, it is possible to increase the reliability of transmission and the second network are set Standby received signal quality.Or, the first set is identical with the subcarrier in the second set, the 3rd set It is identical with the subcarrier in the first set, realize code division multiplexing.
In all embodiments of the invention (including latter embodiments), { r (i) }, i=0~P-1 can be 0,1, 2 ..., K-1 } in continuous P element, the scheme in patent application from Application No. CN201610311497.8 is different, Multiple signals are that dressing interlocks in CN201610311497.8.Or in embodiments of the present invention, can be with P+Q as L=2 ＜ K, the scheme in patent application from Application No. CN201610311497.8 is different, P+Q=in CN201610311497.8 K.Or in all embodiments of the invention, either second network equipment can send or receive control to first network equipment Signaling, the control signaling are used to indicate the phase place parameter information that the First ray is mapped in the first set, The phase place parameter information includes the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, described At least one of subcarrier number LP, phase rotation coefficient relevant information u of one set.Even if particularly First ray The resource pectination frequency division multiplexing of the second set of the resource of first set and the second sequence, i.e., { r (i) }, i=0~P-1 for 0, 2 ..., 2P-2 }, { s (i) }, i=0~Q-1 is { 1,3 ..., 2Q-1 }, or { r (i) }, i=0~P-1 for 1,3 ..., 2P-1 }, { s (i) }, i=0~Q-1 is { 0,2 ..., 2Q-2 }.In patent application with Application No. CN201610311497.8 Scheme difference be to notify twiddle factor information e by control signaling2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, phase At least one of position twiddle factor relevant information u.In the embodiment of the present invention, first network equipment or second network equipment hair Include twiddle factor information e in the control signaling sent or received2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, phase place At least one of factor relevant information u.The value u of the First ray therein and value v of the second sequence is different, such as L=2 When, u=0 then just needs v=1 just to can guarantee that u, and v values are different, but can also u=1, v=0, while ensure u, v values are not Together.Therefore, by control signaling notify u value, e.g. 0 or 1, it is possible to selection use u=0, v=1, or u= 1, v=0.Such as equipment 1 can be notified to use u=0, v=1, equipment 2 uses u=1, v=0.So although two equipment use Frequency resource it is completely overlapped, but due to u, v value one is u=0, v=1, and another is u=1, v=0, also may be used To ensure certain orthogonality, so as to which receiver can distinguish the transmission signal of two equipment.
Fig. 8 is referred to, the schematic flow sheet of the method for the transmission signal provided for the embodiment of the present invention five.Need what is illustrated It is that the embodiment five shown in Fig. 8 mainly introduces second network equipment and receives multichannel signal Zhong Mou roads signal to be sent to be sent Process.
601, second network equipment receives the first reception corresponding to First ray from the first set of the first subcarrier group Signal.
Wherein, the description of the first subcarrier group, the first set and the First ray can be found in above Describe, will not be repeated here accordingly in one network equipment.Reception signal corresponding to the First ray is the first network Equipment is mapped to the signal of the signal generation in the first set according to the First ray, that is, at least one sequence be present In the case of, reception signal corresponding to the First ray is the first network equipment according in the first subcarrier group A part for the transmission signal of signal generation on subcarrier, i.e., each sequence pair is answered in the described multiple sequences for sending signal One reception signal.
Fig. 9 is referred to, is schematic flow sheet of the embodiment illustrated in fig. 8 before step 601 is performed.As shown in figure 9, holding Before step 601 shown in row Fig. 8, second network equipment carries out Fast Fourier Transform (FFT) FFT processing to the signal of reception, obtains The reception signal of subcarrier in first subcarrier group.
602, second network equipment carries out signal transacting to first reception signal.
Specifically, signal transacting, can specifically include carrying out equilibrium etc. to the first reception signal for data-signal, It can specifically include carrying out channel estimation process etc. to the first reception signal for reference signal, for the sequence of carrying information Include equilibrium treatment for row.Second network equipment carries out signal transacting to first reception signal, can also include： Second network equipment carries out that inverse discrete Fourier transform IDFT processing is received to first reception signal One sequence, it is demodulated processing.
When first reception signal is the sequence of carrying information, signal transacting further comprises to the first reception signal Carry out the relevant treatment and demodulation process of sequence.
Corresponding with the first network equipment, in addition to the transmission signal as described above, second network is set It is standby can also the second reception signal corresponding to the sequence of received over subcarriers second from the first subcarrier group, or even the 3rd sequence 3rd reception signal corresponding to row, or even reception signal corresponding to more sequences.Sent due to the first network equipment Multichannel signal to be sent meets single-carrier property, therefore the reception signal that second network equipment receives, on the one hand can in transmitting The low peak average ratio of signal is enough kept, improves transmission signal mean power, so as to ensure the received signal to noise ratio having had in recipient, separately One side multichannel signal to be sent is not present overlapping in mapping process so that the reception signal that second network equipment receives Between disturb it is smaller.
It is above-mentioned that mainly the scheme of the embodiment of the present invention is described from the angle of the network equipment.It is understood that Each network equipment, such as first network equipment, second network equipment etc. is in order to realize above-mentioned function, it is each it comprises performing The corresponding hardware configuration of function and/or software module.Those skilled in the art should be readily appreciated that, public with reference to institute herein The module and algorithm steps of each example for the embodiment description opened, the present invention can be with hardware or the knot of hardware and computer software Conjunction form is realized.Some functions is performed in a manner of hardware or computer software driving hardware actually, depending on technology The application-specific and design constraint of scheme.Professional and technical personnel can use distinct methods to each specific application Described function is realized, but this realization is it is not considered that beyond the scope of this invention.
The embodiment of the present invention can carry out function according to above method example to first network equipment, second network equipment etc. The division of module, for example, can correspond to each function divides each functional module, can also be by two or more functions It is integrated in a processing module.Above-mentioned integrated module can both be realized in the form of hardware, can also use software work( The form of energy module is realized.It should be noted that the division in the embodiment of the present invention to module is schematical, it is only one kind Division of logic function, there can be other dividing mode when actually realizing.
In the case of using integrated module, Figure 10 a show first network equipment involved in above-described embodiment A kind of possible structural representation.First network equipment 700 includes：Processing module 701 and sending module 702.Processing module 701 actions for being used for first network equipment are controlled management, for example, processing module 701 is used to support first network equipment Perform the process 201 and 202 in Fig. 2, and/or other processes for techniques described herein.Sending module 702 is used for branch Hold first network equipment and the communication of second network equipment or other network entities.First network equipment can also include storage mould Block 703, for storing the program code and data of first network equipment.
Wherein, processing module 701 can be processor or controller, such as can be central processing unit (Central Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP), Application specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array It is (Field Programmable Gate Array, FPGA) or other PLDs, transistor logic, hard Part part or its any combination.What it can realize or perform with reference to described by the disclosure of invention various exemplary patrols Collect square frame, module and circuit.The processor can also be the combination for realizing computing function, such as include one or more micro- places Manage device combination, combination of DSP and microprocessor etc..Sending module 702 can be transceiver, transmission circuit or communication interface Deng.Memory module 703 can be memory.
When processing module 701 is processor, sending module 702 is transceiver, when memory module 703 is memory, this hair First network equipment involved by bright embodiment can be the first network equipment shown in Figure 10 b.
Refering to shown in Figure 10 b, the first network equipment 710 includes：Processor 712, transceiver 713, memory 711.Can Choosing, first network equipment 710 can also include bus 714.Wherein, transceiver 713, processor 712 and memory 711 can To be connected with each other by bus 714；Bus 714 can be Peripheral Component Interconnect standard (Peripheral Component Interconnect, abbreviation PCI) bus or EISA (Extended Industry Standard Architecture, abbreviation EISA) bus etc..The bus 714 can be divided into address bus, data/address bus, controlling bus etc.. For ease of representing, only represented in Figure 10 b with a thick line, it is not intended that an only bus or a type of bus.
In the case of using integrated module, Figure 11 a show second network equipment involved in above-described embodiment A kind of possible structural representation.Second network equipment 800 includes：Receiving module 801 and processing module 802.Processing module 802 actions for being used for second network equipment are controlled management, for example, processing module 802 is used to support second network equipment Perform the process 602 in Fig. 8, and/or other processes for techniques described herein.Receiving module 801 is used to support the The communication of two network equipments and first network equipment or other network entities.Second network equipment can also include memory module 803, for storing the program code and data of second network equipment.
Wherein, processing module 802 can be processor or controller, such as can be central processing unit (Central Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP), Application specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array It is (Field Programmable Gate Array, FPGA) or other PLDs, transistor logic, hard Part part or its any combination.What it can realize or perform with reference to described by the disclosure of invention various exemplary patrols Collect square frame, module and circuit.The processor can also be the combination for realizing computing function, such as include one or more micro- places Manage device combination, combination of DSP and microprocessor etc..Receiving module 801 can be transceiver, transmission circuit or communication interface Deng.Memory module 803 can be memory.
When processing module 802 is processor, receiving module 801 is transceiver, when memory module 803 is memory, this hair Second network equipment involved by bright embodiment can be second network equipment shown in Figure 11 b.
Refering to shown in Figure 11 b, second network equipment 810 includes：Processor 812, transceiver 813, memory 811.Can Choosing, second network equipment 810 can also include bus 814.Wherein, transceiver 813, processor 812 and memory 811 can To be connected with each other by bus 814；Bus 814 can be Peripheral Component Interconnect STD bus or EISA bus Deng.The bus 814 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only with one in Figure 11 b Thick line represents, it is not intended that an only bus or a type of bus.
The step of method or algorithm with reference to described by disclosure of the embodiment of the present invention, can be come real in a manner of hardware Realized now or by the mode of computing device software instruction.Software instruction can be made up of corresponding software module, Software module can be stored on random access memory (Random Access Memory, RAM), flash memory, read-only storage (Read Only Memory, ROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable ROM, EPROM), EEPROM (Electrically EPROM, EEPROM), register, hard disk, movement are hard In the storage medium of disk, read-only optical disc (CD~ROM) or any other form well known in the art.A kind of exemplary storage Medium couples so as to enable a processor to from the read information, and can write to the storage medium and believe to processor Breath.Certainly, storage medium can also be the part of processor.Processor and storage medium can be located in ASIC.In addition, The ASIC can be located in core network interface equipment.Certainly, processor and storage medium can also be present in as discrete assembly In core network interface equipment.
Those skilled in the art it will be appreciated that in said one or multiple examples, retouched by the embodiment of the present invention The function of stating can be realized with hardware, software, firmware or their any combination.When implemented in software, can be by this A little functions are stored in computer-readable medium or entered as one or more instructions on computer-readable medium or code Row transmission.Computer-readable medium includes computer-readable storage medium and communication media, and wherein communication media includes being easy to from one Any medium of computer program is transmitted to another place in place.Storage medium can be that universal or special computer can be deposited Any usable medium taken.
Above-described embodiment, the purpose, technical scheme and beneficial effect of the embodiment of the present invention are carried out It is further described, should be understood that the embodiment that the foregoing is only the embodiment of the present invention, and do not have to In limit the embodiment of the present invention protection domain, it is all on the basis of the technical scheme of the embodiment of the present invention, done it is any Modification, equivalent substitution, improvement etc., it all should be included within the protection domain of the embodiment of the present invention.

Claims (50)

  1. A kind of 1. method of transmission signal, it is characterised in that including：
    First ray { x of the first network equipment by length for LP0,x1,...,xL·P-1It is mapped to the bag of the first subcarrier group In the first set for including LP subcarrier, the first subcarrier group includes B subcarrier { c being continuously spacedly distributed0, c1,...,cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the first set Subcarrier cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0, 1,2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, l=0 ~L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
    The first network equipment sends signal according to the signal generation on the subcarrier of the first subcarrier group；
    The first network equipment sends the transmission signal.
  2. 2. according to the method for claim 1, it is characterised in that methods described also includes：
    Second sequence { y of the first network equipment by length for LQ0,y1,...,yL·Q-1It is mapped to the first son load In the second set for including LQ subcarrier of ripple group；Q≤K, Q are positive integer；Sequential element in second sequence yi+l·QIt is mapped to the subcarrier c of the second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi· e2πvj·l/L；Wherein, i is variable, i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, s (i) value is different, and l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0, b1,...,bQ-1It is the sequence that length is Q.
  3. 3. according to the method for claim 2, it is characterised in that not identical in the first set and the second set Subcarrier, or the first set is identical with the subcarrier in the second set.
  4. 4. method according to claim 1 or 2, it is characterised in that the B, the P, the Q, the L and the K expire The following relation of foot：B=(L-1) K+P+Q, P+Q≤K.
  5. 5. according to the method for claim 1, it is characterised in that first sequence of the first network equipment by length for LP Arrange { x0,x1,...,xL·P-1Be mapped in the first set for including LP subcarrier of the first subcarrier group before, also wrap Include：
    First network equipment signal { h to be sent to first0,h1,...,hP-1Carry out discrete Fourier transform DFT obtain { a0,a1, a2,...,aP-1}。
  6. 6. according to the method for claim 1, it is characterised in that { a0,a1,a2,...,aP-1It is reference signal sequence, or be The reference signal sequence and the sequence of the product of the described first signal to be sent.
  7. 7. according to the method for claim 6, it is characterised in that the reference signal sequence generates for Zadoff-Chu sequence Sequence, or for LTE reference signals sequence.
  8. 8. method according to claim 1 or 2, it is characterised in that { a0,a1,a2,...,aP-1BeAnd/or { b0,b1,...,bQ-1BeWherein, en,n =0,1,2 ..., P-1 is sequence, P=Q, α1, α2For real number.
  9. 9. according to the method for claim 1, it is characterised in that { r (i) }, i=0~P-1 are in { 0,1,2 ..., K-1 } Continuous P element.
  10. 10. according to the method for claim 2, it is characterised in that { s (i) }, i=0~Q-1 are in { 0,1,2 ..., K-1 } Continuous Q element.
  11. 11. according to the method for claim 1, it is characterised in that { r (i) }, i=0~P-1 are in { 0,1,2 ..., K-1 } At intervals of JrContinuous P element, wherein, JrFor positive integer.
  12. 12. according to the method for claim 2, it is characterised in that { s (i) }, i=0~Q-1 are in { 0,1,2 ..., K-1 } At intervals of JsContinuous Q element, wherein, JsFor positive integer.
  13. 13. according to the method for claim 1, it is characterised in that methods described also includes：
    The first network equipment sends or received control signaling, and the control signaling is used to indicate the First ray mapping Phase place parameter information on to the first set, the phase place parameter information include the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, the subcarrier number LP of the first set, phase rotation coefficient relevant information At least one of u.
  14. A kind of 14. method of transmission signal, it is characterised in that including：
    It is corresponding that second network equipment receives First ray from the first set for including LP subcarrier of the first subcarrier group The first reception signal；The first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,...,cB-1, cq Represent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group；First ray { the x0, x1,...,xL·P-1Be LP for the length that is carried on the subcarrier of the first set sequence, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the subcarrier of the first set cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
    Second network equipment carries out signal transacting to first reception signal.
  15. 15. according to the method for claim 14, it is characterised in that methods described also includes：
    Second network equipment receives second from the second set for including LQ subcarrier of the first subcarrier group Second reception signal corresponding to sequence；Second sequence { the y0,y1,...,yL·Q-1It is the son being carried in the second set The sequence that length on carrier wave is LQ, Q≤K, Q are positive integer；Sequential element y in second sequencei+l·QIt is mapped to institute State the subcarrier c of second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi·e2πvj·l/L；Wherein, i For variable, i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, s (i) value is different, l For positive integer, l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0,b1,...,bQ-1It is that length is Q sequence；
    Second network equipment carries out signal transacting to second reception signal.
  16. 16. according to the method for claim 15, it is characterised in that there is no phase in the first set and the second set Same subcarrier, or the first set are identical with the subcarrier in the second set.
  17. 17. the method according to claims 14 or 15, it is characterised in that the B, the P, the Q, the L and the K Meet following relation：B=(L-1) K+P+Q, P+Q≤K.
  18. 18. according to the method for claim 14, it is characterised in that { a0,a1,a2,...,aP-1It is reference signal sequence, or For the reference signal sequence and the first signal { h to be sent0,h1,...,hP-1Product sequence.
  19. 19. according to the method for claim 18, it is characterised in that the reference signal sequence is given birth to for Zadoff-Chu sequence Into sequence, or for LTE reference signals sequence.
  20. 20. the method according to claims 14 or 15, it is characterised in that { a0,a1,...,aP-1BeAnd/or { b0,b1,...,bQ-1BeWherein, en,n =0,1,2 ..., P-1 is sequence, P=Q, α1, α2For real number.
  21. 21. according to the method for claim 14, it is characterised in that { r (i) }, i=0~P-1 are { 0,1,2 ..., K-1 } In continuous P element.
  22. 22. according to the method for claim 15, it is characterised in that { s (i) }, i=0~Q-1 are { 0,1,2 ..., K-1 } In continuous Q element.
  23. 23. according to the method for claim 14, it is characterised in that { r (i) }, i=0~P-1 are { 0,1,2 ..., K-1 } In at intervals of JrContinuous P element, wherein, JrFor positive integer.
  24. 24. according to the method for claim 15, it is characterised in that { s (i) }, i=0~Q-1 are { 0,1,2 ..., K-1 } In at intervals of JsContinuous Q element, wherein, JsFor positive integer.
  25. 25. according to the method for claim 14, it is characterised in that methods described also includes：
    Second network equipment receives or sent control signaling, and the control signaling is used to indicate the First ray mapping Phase place parameter information on to the first set, the phase place parameter information include the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L, the subcarrier number LP of the first set, phase rotation coefficient relevant information At least one of u.
  26. A kind of 26. first network equipment, it is characterised in that including：
    Processing module, for the First ray { x by length for LP0,x1,...,xL·P-1It is mapped to the bag of the first subcarrier group In the first set for including LP subcarrier, the first subcarrier group includes B subcarrier { c being continuously spacedly distributed0, c1,...,cB-1, cqRepresent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the first set Subcarrier cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0, 1,2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, l=0 ~L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
    The processing module, the signal generation being additionally operable on the subcarrier according to the first subcarrier group send signal；
    Sending module, for sending the transmission signal.
  27. 27. first network equipment according to claim 26, it is characterised in that
    The processing module, it is additionally operable to the second sequence { y for LQ by length0,y1,...,yL·Q-1It is mapped to first son In the second set for including LQ subcarrier of carrier wave set；Q≤K, Q are positive integer；Sequential element in second sequence yi+l·QIt is mapped to the subcarrier c of the second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi· e2πvj·l/L；Wherein, i is variable, i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, s (i) value is different, and l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0, b1,...,bQ-1It is the sequence that length is Q.
  28. 28. first network equipment according to claim 26, it is characterised in that the first set and the second set In there is no an identical subcarrier, or the first set is identical with the subcarrier in the second set.
  29. 29. first network equipment according to claim 26, it is characterised in that the B, the P, the Q, the L and The K meets following relation：B=(L-1) K+P+Q, P+Q≤K.
  30. 30. according to the method for claim 26, it is characterised in that the processing module, it is LP's to be additionally operable to length First ray { x0,x1,...,xL·P-1Be mapped in the first set for including LP subcarrier of the first subcarrier group before, Signal { h to be sent to first0,h1,...,hP-1Carry out discrete Fourier transform DFT obtain { a0,a1,a2,...,aP-1}。
  31. 31. first network equipment according to claim 26, it is characterised in that { a0,a1,a2,...,aP-1It is with reference to letter Number sequence, or be the reference signal sequence and the sequence of the product of the described first signal to be sent.
  32. 32. first network equipment according to claim 31, it is characterised in that the reference signal sequence is Zadoff- The sequence of Chu sequences generation, or the sequence for LTE reference signals.
  33. 33. the first network equipment according to claim 26 or 27, it is characterised in that { a0,a1,...,aP-1BeAnd/or { b0,b1,...,bQ-1BeWherein, en,n =0,1,2 ..., P-1 is sequence, P=Q, α1, α2For real number.
  34. 34. first network equipment according to claim 26, it is characterised in that { r (i) }, i=0~P-1 for 0,1, 2 ..., K-1 in continuous P element.
  35. 35. first network equipment according to claim 27, it is characterised in that { s (i) }, i=0~Q-1 for 0,1, 2 ..., K-1 in continuous Q element.
  36. 36. first network equipment according to claim 26, it is characterised in that { r (i) }, i=0~P-1 for 0,1, 2 ..., K-1 at intervals of JrContinuous P element, wherein, JrFor positive integer.
  37. 37. first network equipment according to claim 27, it is characterised in that { s (i) }, i=0~Q-1 for 0,1, 2 ..., K-1 at intervals of JsContinuous Q element, wherein, JsFor positive integer.
  38. 38. first network side apparatus according to claim 26, it is characterised in that the sending module be additionally operable to send or Person receives control signaling, and the control signaling is used to indicate the phase place that the First ray is mapped in the first set Parameter information, the phase place parameter information include the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2 πuj·l/L, the first set at least one of subcarrier number LP, phase rotation coefficient relevant information u.
  39. A kind of 39. second network equipment, it is characterised in that including：
    Receiving module, it is corresponding for receiving First ray from the first set for including LP subcarrier of the first subcarrier group The first reception signal；The first subcarrier group includes B subcarrier { c being continuously spacedly distributed0,c1,...,cB-1, cq Represent the numbering of q-th of subcarrier being continuously spacedly distributed in the first subcarrier group；First ray { the x0, x1,...,xL·P-1Be LP for the length that is carried on the subcarrier of the first set sequence, B≤LK, P≤K, B, P, K, L are positive integer, L ＞ 1；Sequential element x in the First rayi+l·PIt is mapped to the subcarrier of the first set cr(i)+l·K, xi+l·P=ai·e2πuj(r(i)+l·K)/(L·K)Or xi+l·P=ai·e2πuj·l/L；Wherein, i is variable, i=0,1, 2 ..., P-1, r (i) ∈ { 0,1,2 ..., K-1 }, for different i values, r (i) value is different, and l is positive integer, and l=0~ L-1, u ∈ { 0,1 ..., L-1 }, j are the imaginary part of plural number；{a0,a1,...,aP-1It is the sequence that length is P；
    Processing module, for carrying out signal transacting to first reception signal.
  40. 40. second network equipment according to claim 27, it is characterised in that
    The receiving module, it is additionally operable to receive the from the second set for including LQ subcarrier of the first subcarrier group Second reception signal corresponding to two sequences；Second sequence { the y0,y1,...,yL·Q-1It is to be carried in the second set The sequence that length on subcarrier is LQ, Q≤K, Q are positive integer；Sequential element y in second sequencei+l·QIt is mapped to The subcarrier c of the second sets(i)+l·K, yi+l·Q=bi·e2πvj(s(i)+l·K)/(L·K)Or yi+l·Q=bi·e2πvj·l/L；Its In, i is variable, and i=0,1,2 ..., Q-1, s (i) ∈ { 0,1,2 ..., K-1 }, for different i values, s (i) value is not Together, l is positive integer, and l=0~L-1, v ∈ { 0,1 ..., L-1 }, v ≠ u, j are the imaginary part of plural number；{b0,b1,...,bQ-1It is long Spend the sequence for Q；
    The processing module, it is additionally operable to carry out signal transacting to second reception signal.
  41. 41. second network equipment according to claim 40, it is characterised in that the first set and the second set In there is no an identical subcarrier, or the first set is identical with the subcarrier in the second set.
  42. 42. second network equipment according to claim 39 or 40, it is characterised in that the B, the P, the Q, described L and the K meet following relation：B=(L-1) K+P+Q, P+Q≤K.
  43. 43. second network equipment according to claim 39, it is characterised in that { a0,a1,a2,...,aP-1It is with reference to letter Number sequence, or be the reference signal sequence and the sequence of the product of the first signal to be sent.
  44. 44. second network equipment according to claim 43, it is characterised in that the reference signal sequence is Zadoff- The sequence of Chu sequences generation, or the sequence for LTE reference signals.
  45. 45. second network equipment according to claim 39 or 40, it is characterised in that { a0,a1,...,aP-1BeAnd/or { b0,b1,...,bQ-1BeWherein, en,n =0,1,2 ..., P-1 is sequence, P=Q, α1, α2For real number.
  46. 46. second network equipment according to claim 39, it is characterised in that { r (i) }, i=0~P-1 for 0,1, 2 ..., K-1 in continuous P element.
  47. 47. second network equipment according to claim 40, it is characterised in that { s (i) }, i=0~Q-1 for 0,1, 2 ..., K-1 in continuous Q element.
  48. 48. second network equipment according to claim 39, it is characterised in that { r (i) }, i=0~P-1 for 0,1, 2 ..., K-1 at intervals of JrContinuous P element, wherein, JrFor positive integer.
  49. 49. second network equipment according to claim 40, it is characterised in that { s (i) }, i=0~Q-1 for 0,1, 2 ..., K-1 at intervals of JsContinuous Q element, wherein, JsFor positive integer.
  50. 50. second network equipment according to claim 39, it is characterised in that the receiving module be additionally operable to receive or Send control signaling, the control signaling is used for the phase place ginseng for indicating that the First ray is mapped in the first set Number information, the phase place parameter information include the K, twiddle factor information e2πuj(r(i)+l·K)/(L·K)Or ai·e2πuj·l/L、 At least one of subcarrier number LP, phase rotation coefficient relevant information u of the first set.
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