CN101616444A - In the LTE system, send the method and apparatus of up symbol - Google Patents

Abstract

Send the method for data in a kind of LTE system, comprise step: user data is handled; Non-user data is handled; The OFDM frame of user data and other non-user data compositions is sent, and the number of user data is along with the number of non-user data is different and different, and the position of the original position of user data in the OFDM frame in the OFDM frame fixed.

Description

In the LTE system, send the method and apparatus of up symbol

Technical field

The present invention relates to wireless communication system, more specifically, relate to a kind of equipment and method of the up symbol of transmission in wireless communication system.

Background technology

3GPP standardization body is carrying out the formulation of new generation of wireless communication standard, and this standard is called as LTE.Its downlink transfer technology is based on OFDM (OFDM); Its uplink technology inserts (SCFDMA) based on single-carrier frequency division multiple access.The LTE system comprises two types frame structure, and the frame structure Class1 adopts Frequency Division Duplexing (FDD) (FDD), and frame structure type 2 adopts time division duplex (TDD).

Fig. 2 is the frame structure of LTE FDD system, and the time span of radio frames (radio frame) is 307200 * T _s=10ms, it is 15360T that each radio frames is divided into 20 length _sThe time slot of=0.5ms, the index range of time slot is 0～19.Each time slot comprises a plurality of OFDM symbols, and the CP of OFDM symbol has two kinds, promptly general CP and lengthening CP.Use the time slot of general CP to comprise 7 OFDM symbols, use the time slot of lengthening CP to comprise 6 OFDM symbols.Each subframe is made of two continuous time slot, and promptly k subframe comprises time slot 2k and time slot 2k+1.

Fig. 3 is the frame structure of LTE TDD system.Each length is 307200 * T _sIt is 153600 * T that the radio frames of=10ms is divided into two length _sThe field of=5ms.It is 15360T that each field comprises 8 length _sThe time slot of=0.5ms and 3 special domain, i.e. descending pilot frequency time slot (DwPTS), protection be (GP) and uplink pilot time slot (UpPTS) at interval, the length of these 3 special domain be 30720T _s=1ms.Each time slot comprises a plurality of OFDM symbols, and the CP of OFDM symbol has two kinds, i.e. common CP and lengthening CP.Use the time slot of general CP to comprise 7 OFDM symbols, use the time slot of lengthening CP to comprise 6 OFDM symbols.Each subframe is made of two continuous time slot, and promptly k subframe comprises time slot 2k and time slot 2k+1.Subframe 1 and subframe 6 comprise 3 above-mentioned special domain.

According to the discussion result of present 3GPP normal structure to the LTE standard, subframe 0, subframe 5 and DwPTS are fixed for downlink transfer; To the 5ms change-over period, UpPTS, subframe 2 and subframe 7 are fixed for uplink, and to the 10ms change-over period, UpPTS, subframe 2 are fixed for uplink.

Fig. 4 has described the running time-frequency resource lattice distribution figure of single sub-frame of uplink when the LTE system configuration is lengthening CP.When system configuration is common CP, each sub-frame of uplink comprises two time slots in each Resource Block RB (Resource Block), each time slot comprises 7 SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol (time domain), 12 subcarriers (frequency domain).When system configuration was lengthening CP, the RB of each sub-frame of uplink comprised two continuous time slot, and each time slot comprises 6 SC-FDMA symbols and 12 carrier waves.Minimum sub-frame of uplink resource units be called resource element (RE, ResourceElement).

According to the discussion result of present LTE, in order to improve the performance of down link, the user need report downlink characteristics to the base station according to the network terminal configuration of base station, and these characteristic informations send by specific upload control symbol and finish.These control characters comprise RI (Rank Indication) symbol of reflection down channel exponent number, down channel quality indication control character CQI (Channel Quality Indicator) symbol, answering/no answering control character ACK/NACK.

According to the discussion result of present LTE, when UE has upstream data to transmit simultaneously, need on the RB of UE distribution, to transmit all kinds of control characters and data symbol are multiplexing.And the numerical value of RI determined the original position of the number of CQI symbol and data symbol mapping, like this, when RI numerical value not simultaneously, can cause the original position difference of data symbol mapping.

Based on above analysis, we find, according to the conclusion of present LTE, if detecting in the base station, the RI control character makes mistakes, when even the user sends RI=1, when the base station erroneous judgement is RI=2, the original position (as Fig. 5) that can cause base station false judgment data is with S among Fig. 5 (a) _0,0Think it is S among Fig. 5 (b) by mistake _0,0, and then cause being correctly decoded data bit.Does how lowering the RI detection make mistakes to the influence of base station demodulating data? in present standardization meeting, not relevant discussion.

Summary of the invention

The purpose of this invention is to provide a kind of equipment and method that in wireless communication system, sends up symbol.

Send the method for data in a kind of ofdm system, comprise step:

User data is handled;

Non-user data is handled;

The OFDM frame of user data and other non-user data compositions is sent, and the number of user data is along with the number of non-user data is different and different, but the position of the original position of user data in the OFDM frame in the OFDM frame fixed.

Send the device of up symbol in a kind of LTE system, comprise the symbol multiplexer, be used to import the reference symbol of control character, data symbol and generation after the modulation, symbolic vector after the output mapping, wherein, described symbol multiplexer is handled user data and non-user data respectively, and the OFDM frame that user data and non-user data are formed sends, the number of user data is along with the number of non-user data is different and different, and the position of the original position of user data in the OFDM frame in the OFDM frame fixed.

Utilize the method according to this invention and device, can be correctly decoded data bit, and attenuating RI detection makes mistakes to the influence of base station demodulating data.

Description of drawings

Fig. 1 shows according to structured flowchart of the present invention;

Fig. 2 shows LTE FDD frame structure;

Fig. 3 shows LTE tdd frame structure;

Fig. 4 shows LTE sub-frame of uplink (Uplink Subframe, TTI) structure;

Fig. 5 shows the schematic diagram of problem description;

Fig. 6 shows sign map flow chart of the present invention;

Fig. 7 shows according to symbol multiplexer output symbol schematic diagram of the present invention (concatenated in order method);

Fig. 8 shows according to symbol multiplexer output symbol schematic diagram of the present invention (interleaving stage linked method).

Embodiment

In the following description, abbreviate subscriber equipment (user equipment) as UE.

Fig. 1 has provided according to system block diagram example of the present invention.With reference to figure 1, OFDM transmitter according to the present invention can comprise:

101: channel quality indicator (CQI) control information bit stream generating apparatus is used for generating subscriber equipment (UE, channel quality indicator (CQI) control information bit UserEquipment) according to the CQI feedback kind of the configuration of network and the numerical value of channel exponent number RI.

102: channel encoder is used for according to code rate information information bit being handled the new bit stream of generation again.

103: scrambler, be used for that bit stream is carried out scrambling and handle, make interference randomization.

104: modulator is used for data bit after user's the scrambling is mapped as the signaling point of signal constellation (in digital modulation).

105: reply indication control character ACK/NACK bit stream maker, be used for the data code block whether foundation correctly receives the base station, generate corresponding ACK/NACK bit stream.

106: channel exponent number indication control character RI bit stream maker is used for generating corresponding RI bit by the detection of descending reference symbol being judged the exponent number of down channel according to the exponent number that calculates.

107: data information bits stream maker is used for generating the data information bits of this transmission according to the numerical value of the size of the block of uplink resources of base station assigns and control character CQI, RI, ACK/NACK symbol.

108: the data symbol cascade device, be used for numerical value according to channel end indication control character RI, a plurality of data code block are cascaded into a data code block.

109: the reference symbol maker is used to generate reference symbol (RS, Reference Signal), so that carry out the channel estimating of receiving terminal.

110: the symbol multiplexer, the data symbol, control character, the reference symbol that generate is together multiplexing.

111: the emission precoder, be used for the symbol that single channel is multiplexing and handle accordingly, generate a certain multicarrier symbol.The general discrete Fourier transform (DFT) (DFT) that adopts.

112: Physical Resource Block mapping, the output symbol that is used to realize to launch precoder is mapped to the Physical Resource Block of distribution.Generally can adopt inverse Fourier transform (IFFT).

113: antenna, the radiofrequency signal power of transmitting set output is launched with form of electromagnetic wave.

The present invention relates generally to data symbol cascade device (108) part among Fig. 1.

Describe main contents of the present invention in detail below in conjunction with Fig. 7 and Fig. 8.Here set the configuration difference of RI, and the original position of user data constant in the ofdm system.

The main difference of Fig. 7 (a) and Fig. 7 (b) is that the configuration of RI is different.Among Fig. 7 (a), the symbol of non-user data is from C0 to C13, and user data is from symbol 9 beginning of time slot 1.Among Fig. 7 (b), the symbol of non-user data is from C0 to C19, and user data also is from symbol 9 beginning of time slot 1.Among Fig. 7 (a), S _0,0The position and the S among Fig. 7 (b) _0,0The position be the same.

The main difference of Fig. 8 (a) and Fig. 8 (b) is that the configuration of RI is different.Among Fig. 8 (a), the symbol of non-user data is from C0 to C13, and user data is from symbol 9 beginning of time slot 1.Among Fig. 8 (b), the symbol of non-user data is from C0 to C19, and user data also is from symbol 9 beginning of time slot 1.Among Fig. 8 (a), S _0,0The position and the S among Fig. 8 (b) _0,0The position be the same.

Suppose that data symbol comprises the individual code block of M (M is not less than 1) when various control characters and data symbol are multiplexing, the number of symbols in each code block is E _{R, k}, (k=1,2,0≤r ,≤M-1).The number of symbols of promptly representing r data code block when RI numerical value is type k, e _{R, l}Expression is l symbol in r code block when RI numerical value is 1; RI numerical value is divided into two classes, is called Class1 when RI=1, is type 2 when RI＞1.

Describe example in detail below in conjunction with Fig. 7 according to data code block concatenated in order method of the present invention:

Step 1: press the ascending order of piece label from the afterbody of each data code block extract the part symbol successively cascade constitute symbol cascade data block G1 together;

Structure cascade data piece G1:G1={f _i.Wherein $0\≤i\≤\underset{i-0}{\overset{M-1}{\mathrm{\Σ}}}(E_{i,1}-E_{i,2})-1;$

$f_i=\left\{\begin{array}{c}{e}_{{r,E}_{r,2}+i},0\≤i\≤L_0-1,r=0\\ e_{r,E_{r,2}+i-\underset{j=0}{\overset{r-1}{\mathrm{\Σ}}}{L}_j},\underset{j=0}{\overset{r-1}{\mathrm{\Σ}}}{L}_j\≤i\≤\underset{j=0}{\overset{r}{\mathrm{\Σ}}}{L}_j-\mathrm{1,1}\≤r\≤M-1\end{array}\right.$

L in the formula _r=E _{R, 1}-E _{R, 2},

0≤r≤M-1

The label of r representative data piece wherein, E _{R, k}The symbolic number of r data block when representing RI numerical value to be type k, k=1,2; Symbol e _{R, l}L data symbol of r symbol code block when representing RI numerical value to be Class1, M is the number of data block.

Step 2: with the remaining symbol of each data block together, constitute new data block according to the ascending concatenated in order of piece label

G2＝{d _i}， $0\≤i\≤\underset{i=0}{\overset{M-1}{\mathrm{\Σ}}}{E}_{i,2}$ Method as follows;

In the formula

0≤r≤M-1

E _{R, k}The symbolic number of r data block when representing RI numerical value to be type k, k=1,2; Symbol e _{R, l}L data symbol of r symbol code block when representing the RI value for Class1, M is the number of data block.

Step 3: data symbol block G1, the G2 cascade of front two step cascades are constituted new data block G={G1 together, and the method for G2} is as follows:

Suppose G={s ₀, s ₁, s ₂, s ₃...., s _G-1Represent the code block after the cascade, wherein g=g ₁+ g ₂, then

$s_i=\left\{\begin{array}{c}{f}_i,i=0,....g_1-1,\\ d_{i-g1-1^{,}}i={\mathrm{<figure-callout\; id="1"\; label="g"\; filenames="A2008102126380017H1.png,A2008102126380019H1.png"\; state="\{\{state\}\}">g</figure-callout>}}_1,....{{\mathrm{<figure-callout\; id="1"\; label="g"\; filenames="A2008102126380017H1.png,A2008102126380019H1.png"\; state="\{\{state\}\}">g</figure-callout>}}_1+g}_2-1^{,}\end{array}\right.$

G in the formula ₁Number of symbols for data code block G1; g ₂Number of symbols for data code block G2.

Below in conjunction with the interleaving stage linked method that Fig. 8 is described in detail the data code block cascade, this method can comprise the steps:

Step 1, according to fixed step size from each data block successively circulation extract the fixed number symbol interleaving and constitute a new data symbol block F={f ₀, f ₁... ..f _G-1, $g=\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,1},$ Suppose that the step-length that interweaves is N, promptly from each data symbol block, extract N symbol cascade concatenated in order at every turn, finish until all symbol extractions;

The specific implementation method is as follows:

(if k mod (N*M))=j*N and l*N+i≤E _{J, 1}, in the formula

0≤j≤M-1,0≤i≤N-1

f _k+i＝d _j，l*N+i；

Otherwise

Make j=0, f _K+i=d _{J, l*N+i}, 0＜i＜E _{J, 2}-l*N; Above-mentioned steps is carried out in the j=j+1 circulation, until j=M-1;

Remaining symbol is added successively to the afterbody of newly-generated cascade code block according to the ascending order of data block label.

Step 2: the order of data symbol in the data symbol block that change to generate moves to the front of data block with a back K symbol, wherein $K=\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,1}-\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,2}.$

Basic principle of the present invention is: no matter the RI value is several, the starting point of each code block data symbol or data bit mapping is all identical, so the bit cascade of carrying out each code block before extremely modulation back symbol aligned is still modulated earlier can realize flexibly to guarantee data map starting point unanimity.

Can suppose now: comprise two identical time slots in each TTI, comprise N SC-FDMA symbol, N=7 in the present embodiment in each time slot; Below to the SC-FDMA symbol in the TTI since 0 continuity index, promptly index is 0,1,2 ..., 13.

UE can adopt K kind modulation system, makes K=3 in the present embodiment, promptly comprises QPSK, 16QAM, 64QAM.For convenient the description is example here with 16QAM, in the present embodiment promptly, no matter data bit, CQI control bit, RI control bit, ACK/NACK control bit all adopt the 16QAM modulation system.

ENodeB is used for uplink for UE has distributed L RB in this TTI, in the present embodiment L=1;

The number of sub carrier wave of each RB of up link is expressed as N among the LTE _SC ^RB, in the present embodiment $N_{\mathrm{SC}}^{\mathrm{RB}}=12;$

The RI numerical value of ul transmissions can be divided into two classes among the LTE: Class1 is RI=1; Type 2 is the positive integer of RI＞1; RI=1 in the present embodiment, promptly RI numerical value is Class1, the RE number that is used to transmit the RI symbol is 8;

ENodeB is that UE has distributed different RE to be used to transmit the CQI control character, and when RI numerical value was Class1, the number of CQI control character was C1, and the number of CQI control character is C2 when the RI value type is 2.C1=14 in the present embodiment; C2=20;

ENodeB is that UE has distributed K RI to be used for transferring ACK/NACK symbol, supposes K=8 in the present embodiment;

Data symbol is made up of M code block among the UE, and the number of each code block internal symbol is E _{R, k}, (k=1,2,0≤r ,≤M-1), promptly represent the number of symbols of r data code block when RI numerical value is type k.M=2 in the present embodiment; E _0,1=E _1,1=61; E _0,2=E _1,2=58;

The step-length of cascade is T, T=16 in the present embodiment when adopting the interleaving stage linked method to handle a plurality of data block.

The overall procedure of up sign map framing can be described in detail as follows referring to Fig. 6:

Step 601: because eNodeB is used to transmit data for the user has distributed 114 RE in the present embodiment, and adopt the 16QAM modulation,

UE generates length by bit maker (107) and channel encoder (102) and is 440 sequence of data bits and is divided into two piece e0, e1, adds the CRC of 24 bits respectively:

e0＝{e _0，0，e _0，1，e _0，2，e _0，3…，e _0，243}；

e1＝{e _1，0，e _1，1，e _1，2，e _1，3…，e _1，243}

Step 602: scrambler (103) carries out scrambling to bit vectors e0, e1 to be handled, and is used for User Recognition and interference randomization modulator (104) bit vectors is modulated generation modulation symbol vector S 0, S1

S0＝{s _0，0，s _0，1，s _0，2，s _0，3…，s _0，60}

S1＝{s _1，0，s _1，1，s _1，2，s _1，3…，s _1，60}；

Step 603: data symbol cascade device (108) carries out the cascade processing according to the value type of RI to two different data blocks, generates a single data symbol code block.Concrete multiplexing method divides two kinds, is described below respectively:

Method one: concatenated in order method.Because of the RI numerical value of this cascade is Class1, then (1) by the ascending order of piece label from the afterbody of each data block extract the part symbol successively cascade constitute symbol cascade data block G1 together, wherein the number of G1 internal symbol is:

$\underset{j=0}{\overset{1}{\mathrm{\&Sigma;}}}(E_{j,1}-E_{j,2})=6$

Then according to rule: G1={s _0,58,s _0,59, s _0,60, s _1,58, s _1,59, s _1,60}

(2) according to the ascending concatenated in order of piece label together, constitute new data block G2 with the remaining symbol of each data block.Wherein the number of symbols in the G2 is: ${\mathrm{<figure-callout\; id="2"\; label="g"\; filenames="A2008102126380017H1.png,A2008102126380020H1.png"\; state="\{\{state\}\}">g</figure-callout>}}_2=\underset{i=0}{\overset{1}{\mathrm{\&Sigma;}}}{E}_{i,2}=116$

Then according to rule noted earlier,

G2＝{s _0，0，s _0，1，s _0，2，…，s _0，56，s _0，57，s _1，0，s _1，1，s _1，2，…，s _1，56，s _1，57}

(3) block level with preceding two generations is unified into a data block:

G＝{G1，G2}＝

{s _0，58，s _0，59，s _0，60，s _1，58，s _1，59，s _1，60，s _0，0，，…，s _0，56，s _0，57，s _1，0，，…，s _1，56，s _1，57}

Method two: interleaving stage linked method.Because of the RI numerical value of this cascade is Class1, and the step-length that interweaves in the present embodiment is 16.

(1) according to fixed step size from each data block successively circulation extract the fixed number symbol interleaving and constitute a new data symbol block F={f ₀, f ₁... f _G-1, $g=\underset{i=0}{\overset{1}{\mathrm{\&Sigma;}}}{E}_{i,1}=122,$ Extract 16 symbol cascade concatenated in order at every turn from each data symbol block, finish until all symbol extractions, then data block F is after the cascade:

F＝s _0，0，，…，s _0，15，s _1，0，…，s _1，15，s _0，16，…，s _0，31，s _1，16，…，s _1，31，s _0，32，...，s _0，47，

s _1，32，…，s _1，47，s _0，48，…，s _0，57，s _1，48，…，s _1，57，s _0，58，s _0，59，s _0，60，s _1，58，s _1，59，s _1，60}

(2) order of data symbol in the data symbol block that change to generate moves to the front of data block with a back K symbol, wherein $K=\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,1}-\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,2}=6,$ Then final cascade data symbolic blocks is:

F＝s _0，58，s _0，59，s _0，60，s _1，58，s _1，59，s _1，60，s _0，0，，…，s _0，15，s _1，0，…，s _1，15，s _0，16，…，s _0，31，

s _1，16，…，s _1，31，s _0，32，...，s _0，47，s _1，32，…，s _1，47，s _0，48，...，s _0，57，s _1，48，...，s _1，57}

Step 604,605: because eNodeB is used for the ACK/NACK transmission for the user has distributed 8 RE in the present embodiment, and the 16QAM modulation is adopted in control information, then whether user's foundation successfully receives descending sub frame and generates initial ACK/NACK control bit sequence, and through length after the chnnel coding is

Q _ACK=8*log ₂16=32bits, promptly $Q=\left\{q_i^{\mathrm{ACK}}\right\},$ i∈(0，31)

Step 606: scrambler (102) carries out the scrambling processing that mould 2 adds to the ACK/NACK bit of generation and the random bit of generation, and the bit sequence after the processing is modulated and generated the ACK/NACK symbol sebolic addressing:

A＝{A ₀，A ₁，A ₂，A ₃，A ₄，A ₅，A ₆，A ₇}

Step 607,608: because eNodeB is used for the RI transmission for the user has distributed 8 RE in the present embodiment, and the RI control character adopts the 16QAM modulation, and then the user is according to the descending reference symbol detection being handled generation RI control bit sequence and through length after the chnnel coding being

Q _RI=8*log ₂16=32bits, i.e. Q _RI={ r _i, i ∈ (0,31)

Step 609: scrambler (102) carries out the scrambling processing that mould 2 adds to the RI bit of generation and the random bit of generation, and the bit sequence after the processing is modulated and generated the RI symbol sebolic addressing:

R＝{R ₀，R ₁，R ₂，R ₃，R ₄，R ₅，R ₆，R ₇}

Step 610,611: because eNodeB is used for the CQI transmission for the user has distributed 14 RE in the present embodiment, and the CQI control character adopts the 16QAM modulation, and then the user according to the value type of RI and the type of network configuration feedback CQI through the indication of the channel after chnnel coding CQI sign bit sequence is:

C _CQI=14*log ₂16=56bits, i.e. C _CQI={ C _i, i ∈ (0,55)

Step 612: scrambler (102) carries out the scrambling processing that mould 2 adds to the CQI bit stream of generation and the random bit stream of generation, and the bit sequence after the processing is modulated and generated the CQI symbol sebolic addressing:

C＝{C ₀，C ₁，C ₂，C ₃，C ₄，C ₅，C ₆，C ₇，C ₈，C ₉，C ₁₀，C ₁₁，C ₁₂，C ₁₃}

Step 613:UE generates reference symbol sequence: the length of reference symbol is $2\&times;N_{\mathrm{SC}}^{\mathrm{RB}}=2\&times;1\&times;12=24.$

RS＝{RS _k}，k∈(0，23)；

Step 614: symbol multiplexer (110) with reference symbol, control character, data symbol according to certain rule ordering be mapped to logical resource block RE go up (referring to Fig. 7～Fig. 8), concrete steps are as follows:

(1) will be according to time domain behind the first frequency domain, the subcarrier in frequency domain label from low to high, the ascending sequence reference sign map of time-domain symbol label is on symbol 3 and symbol 10:

(2) with the RI symbol according to first time domain after frequency domain, time-domain symbol be in proper order 1,12,8,5}, the order of frequency domain symbol is mapped on the running time-frequency resource of distribution for from high to low order;

(3) CQI is associated in data level: constitute new sequence: D={C, G} (concatenated in order method); D={C, F} (cascade interweaves) method; According to frequency domain after the first time domain, the time-domain symbol label is ascending, and the new symbolic blocks of subcarrier in frequency domain label order from low to high after with cascade is mapped on the Resource Block of distribution;

(4) with the ACK/NACK symbol sebolic addressing according to first time domain after frequency domain, the subcarrier sequence number from high to low, the time-domain symbol label is ascending, is mapped to the both sides of reference symbol, if data symbol has occupied this symbol, the ACK/NACK symbol is with the cover data symbol.

Step 615: the symbol after will shining upon carries out DFT respectively through the emission precoder to be handled, and generates the SC-FDMA symbolic vector:

Step 615 can comprise following substep:

(1) each RE in each SC-FDMA symbol is gone up symbol waiting for transmission according to first frequency domain after time domain, the order that the subcarrier label is ascending, the time-domain symbol label is ascending in the frequency domain is taken out successively and is constituted new symbolic vector: $X=\left\{x_i\right\},i=0,...,L*N_{\mathrm{sc}}^{\mathrm{RB}}*N,$ In the present embodiment

i＝1*14*14＝196；

(2) vector X is carried out generating new vector Y={ y as down conversion _i, 0≤i≤M _Symb:

$y(l\&CenterDot;M_{\mathrm{sc}}^{\mathrm{PUSCH}}+k)=\frac{1}{\sqrt{M_{\mathrm{sc}}^{\mathrm{PUSCH}}}}\underset{i=0}{\overset{M_{\mathrm{sc}}^{\mathrm{PUSCH}}-1}{\mathrm{\&Sigma;}}}x(l\&CenterDot;M_{\mathrm{sc}}^{\mathrm{PUSCH}}+i)e^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="A2008102126380017H1.png,A2008102126380020H1.png"\; state="\{\{state\}\}">j</figure-callout>}\frac{2\mathrm{\&pi;ik}}{M_{\mathrm{sc}}^{\mathrm{PUSCH}}}}$

$k=0,...,M_{\mathrm{sc}}^{\mathrm{PUSCH}}-1$

$l=0,...,M_{\mathrm{symb}}/M_{\mathrm{sc}}^{\mathrm{PUSCH}}-1$

In the formula $M_{\mathrm{sc}}^{\mathrm{PUSCH}}=L*N_{\mathrm{sc}}^{\mathrm{RB}}$ The representative uplink sub-carrier number that eNodeB distributes for this user in this subframe.In the present embodiment $M_{\mathrm{sc}}^{\mathrm{PUSCH}}=L*N_{\mathrm{sc}}^{\mathrm{RB}}=1*12=12;$ M _SymbRepresent the number of SC-FDMA symbol, in the present embodiment M _Symb=196

Step 616: the symbolic vector that generates is indicated according to the transmitting power of eNodeB, multiply by suitable power factor, and launch.

Claims (12)

1. send the method for data in the LTE system, comprise step:

User data is handled;

Non-user data is handled;

The OFDM frame of user data and non-user data composition is sent, and the number of user data is along with the number of non-user data is different and different, and the position of the original position of user data in the OFDM frame in the OFDM frame fixed.

2. method according to claim 1 is characterized in that, described non-user data comprises: channel quality indication control character CQI, answering/no answering control character ACK/NACK, channel exponent number indication control character RI.

3. method according to claim 2 is characterized in that, the numerical value of described channel exponent number indication control character RI is divided into two classes, and Class1 equals 1 for RI numerical value, and type 2 is a integer greater than 1 for RI numerical value.

4. method according to claim 3, it is characterized in that, if RI numerical value is Class1, then at first M data symbolic code piece carried out cascade and handles, then with data symbol after the cascade according to first time domain after the method for frequency domain be mapped to except that channel quality indication control character CQI and channel exponent number control character RI the time frequency symbol on.

5. method according to claim 4 is characterized in that, described cascade is handled and comprised step:

Press the ascending order of piece label, from the afterbody of each data block extract the part symbol successively cascade constitute symbol cascade data block G1 together;

With the remaining symbol of each data block together, constitute symbol cascade data block G2 according to the ascending concatenated in order of piece label;

With the above two data symbol block G1 that obtain of step cascades, G2 cascade together, constitute new data block G={G1, G2}.

6. method according to claim 5 is characterized in that, the step of described formation symbol cascade data block G1 is:

$G1=\left\{f_i\right\},0\&le;i\&le;\underset{r=0}{\overset{M-1}{\mathrm{\&Sigma;}}}(E_{r,1}-E_{r,2})-1$ Represent the data block that obtains after the cascade, wherein;

$f_i=\left\{\begin{array}{c}{e}_{r,E_{r,2}+i},0\&le;i\&le;L_0-1,r=0\\ e_{r,E_{r,2}+i-\underset{j=0}{\overset{r-1}{\mathrm{\&Sigma;}}}{L}_j},\underset{j=0}{\overset{r-1}{\mathrm{\&Sigma;}}}{L}_j\&le;i\&le;\underset{j=0}{\overset{r}{\mathrm{\&Sigma;}}}{L}_j-\mathrm{1,1}\&le;r\&le;M-1\end{array}\right.$

L in the formula _r=E _{R, 1}-E _{R, 2},

0≤r≤M-1 5

The label of r representative data piece wherein, E _{R, k}The symbolic number of r data block when representing RI numerical value to be type k, k=1,2; Symbol e _{R, l}L data symbol of r symbol code block when representing RI numerical value to be Class1, M is the number of data block.

7. method according to claim 5 is characterized in that, the step of described formation symbol cascade data block G2 is:

G2＝{d _i}， $0\&le;i\&le;\underset{i=0}{\overset{M-1}{\mathrm{\&Sigma;}}}{E}_{i,2}$ Represent the data that obtain after the cascade;

In the formula

0≤r≤M-1

E _{R, k}The symbolic number of r data block when representing RI numerical value to be type k, k=1,2; Symbol e _{R, l}L data symbol of r symbol code block when representing the RI value for Class1, M is the number of data block.

8. method according to claim 5 is characterized in that, generates described data block G={G1, and the step of G2} is:

G={s ₀, s ₁, s ₂, s ₃...., s _G-1Represent the data block that obtains after the cascade, wherein g=g ₁+ g ₂, wherein $s_i=\left\{\begin{array}{c}{f}_i,i=0,....g_1-1\\ d_{i-g1-1},i=g_1,....g_1+g_2-1\end{array}\right.,$

G in the formula ₁Number of symbols for symbol cascade data block G1; g ₂Number of symbols for symbol cascade data block G2.

9. method according to claim 4 is characterized in that, described cascade is handled and comprised step:

According to fixed step size N from each data block successively circulation extract the fixed number symbol interleaving and constitute a new data symbol block F;

Change the order of data symbol in the data symbol block that generates, some symbols at data block rear portion are moved to the front portion of data block.

10. method according to claim 9, it is characterized in that, the step of a new data symbol block F of described formation comprises: suppose that the step-length that interweaves is N, from each data symbol block, extract corresponding N symbol and carry out cascade promptly at every turn, finish until all symbol extractions according to from small to large waterfall sequence;

Remaining symbol is added successively to the afterbody of newly-generated cascade code block according to the ascending order of data block label.

11. wait according to claim 10 is characterized in that, back K the symbol that generates new data block after the cascade is moved to the front portion of data block.

12. send the device of up symbol in the LTE system, comprise the symbol multiplexer, be used to import the reference symbol of control character, data symbol and generation after the modulation, symbolic vector after the output mapping, wherein, described symbol multiplexer is handled user data and non-user data respectively, and the OFDM frame that user data and non-user data are formed sends, the number of user data is along with the number of non-user data is different and different, and the position of the original position of user data in the OFDM frame in the OFDM frame fixed.

Images