METHOD FOR GENERATING AND MAPPING A CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS), DEVICE FOR

专利摘要:
method and device for generating and mapping a channel state information reference signal sequence the present invention provides a method and device for generating and mapping a channel state information reference signal sequence (csi-rs) and the method includes: generating a pseudo-random sequence according to a pseudo-random sequence initial value, performing a quadrature phase shift switching modulation (qpsk) in the pseudo-random sequence and obtaining a first csi-rs sequence according to the bandwidth system maximum; and cut the first csi-rs sequence according to the actual system bandwidth, obtain a second csi-rs sequence and map the second csi-rs sequence to a time frequency location of an antenna port. csi-rs. the csi-rs reference signal sequence can be generated or obtained at the eu terminal and enb terminal respectively in accordance with the declared methods for generating and mapping the reference sequence according to the parameters known by the present invention, so that the calculated csi-rs sequence can be used to measure the channel at the eu terminal.
公开号:BR112012008600A2
申请号:R112012008600-6
申请日:2011-04-26
公开日:2020-02-18
发明作者:Guo Senbao；Sun Yunfeng；Zhu Changqing；Zhang Chenchen
申请人:Zte Corporation；
IPC主号:

专利说明:

METHOD FOR GENERATING AND MAPPING A CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS), DEVICE FOR GENERATING AND MAPPING A CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS), EVOLUTIONED NODE B ( ENB), E, USER EQUIPMENT (EU)
TECHNICAL FIELD
The present invention relates to an Advanced Long Term Evolution (LTE-A) system and, more especially, to a method and device for generating and mapping a Channel State Information Reference Signal sequence (CSI-RS ) in the LTE-A system.
BACKGROUND OF RELATED TECHNIQUE
In Version 10 (RIO) of Long-term Evolution (LTE) to further improve the rate of use of the average frequency spectrum and the rate of use of the frequency spectrum of the edge of a cell and the transfer rate of each Equipment User (UE), two reference signals (also called pilot) are respectively defined: a Channel State Information Reference Signal (CRI-RS) and a Demodulation Reference Signal (DMRS), in which the CRI -RS is used to measure a channel, and a Pre-coding Matrix Indicator (PMI), Channel Quality Indicator (CQI) and Classification Indicator (RI), which are required to be fed back through the UE to a Evolved Node B (eNB) can be calculated by measuring the CRI-RS. The distribution of CSI-RS in the time domain and frequency domain that was defined previously by the 3GPP LTE-A RAN1 61bis conference is sparse, and should ensure that only the pilot density of a CSI-RS in each antenna port on a service cell is included in a Resource Block (RB), and the multiple of 5ms is considered as a CSI-RS period in the time domain. During the 3GPP LTE-A RAN1 61bis conference, standards under
2/45
Normal Cyclic Prefix (Normal CP) and Extended Cyclic Prefix (Extended CP) were respectively defined for the Frequency Division Duplexing (FDD) system and for the Time Division Duplexing (TDD) system (with reference to Figure 1 a Figure 8), in which a CSI-RS antenna port multiplexed with another CSI-RS antenna port by means of Multiple Code Division (CDM), two Orthogonal Frequency Division Multiplexing (OFDM) symbols are occupied in the time domain, and the Resource Element (RE) of a CSI-RS antenna port is included in an RB in the frequency domain.
However, the existing technology does not refer to how to generate and map the CSI-RS sequence.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a method and device for generating and mapping a Channel State Information Reference Signal sequence, meeting the requirements for the application of the Channel State Information Reference Sign in the LTE-A technique .
In order to solve the above problems, the present invention provides a method for generating and mapping the Channel State Information Reference Signal (CSIRS) sequence, which comprises:
generate a pseudo-random sequence, according to an initial value of the pseudo-random sequence, perform a Quadrature Phase Change Switch (QPSK) modulation on the pseudo-random sequence, and obtain a first CSI-RS sequence, according to the bandwidth maximum of the system; and cut the first CSI-RS sequence, according to the current system bandwidth, obtain a second CSI-RS sequence, and map the second CSI-RS sequence to a time frequency location of a
3/45 CSI-RS antenna.
The method can generate the first CSI-RS sequence, cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on an Orthogonal Frequency Division Multiplexing symbol (OFDM) or a subframe; where when the second CSI-RS sequence is mapped based on the OFDM symbol, the second CSI-RS sequences mapped to two OFDM symbols, which are located in the same Multiple Code Division (CDM) group, are produced from different first CSI-RS sequences;
when the second CSI-RS sequence is mapped based on the subframe, the second CSI-RS sequences mapped to the two OFDM symbols that are located in the same CDM group are produced from different parts of the same first CSI- LOL.
The method can generate the first CSI-RS sequence, cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the OFDM symbol; and the method can also comprise: obtaining a pseudo-random sequence initial value, according to a time interval index, an OFDM symbol index in a time interval and a cell identity (ID), or obtaining a initial pseudo-random sequence value, according to one or more of three parameters of a parameter related to the CSI-RS antenna port number, a parameter related to the CSI-RS antenna port index and a Prefix length factor Cyclic (CP), and the time slot index, the OFDM symbol index in a time slot, and the cell ID.
4/45
The initial value of the pseudo-random sequence c _ynyl may be one of the following values:
ς. „= 2 '(7 («, +1) + / +1) (2 Ng +1) + Ng _t = 2' (7. („, +1) + / + 1). (2-7V “+1);
G _ni , = (7 (». +1) + '+ 1)' (2 + 1);
<· „„ = 2 ^IÜ (7 · („, +1) + / +1). (2 · Ng +1) + 2 · + N _cp ;
^c ini <= 2 '“· (7. („, +1) + / + 1). (2. <'+!) + «„;
= 2. (7. („, + 1) + / + 1). (2./V ;; +!) + »„;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N% “+1) - (2- [_ANTPORT / 4j +1) + Ν%“;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N% “+1) - (2- [_ANTPORT / 2j +1) + Ν%“;
c _init = (7 - (^ + 1) + / + 1) - (2- + ) · (2 · [ΑΝΤΡΟΡΤ / 4 + );
c _init = (7 - (^ + 1) + / + 1) - (2- + ) · (2 · [ΑΝΤΡΟΡΤ / 2 + );
c _init = 4. (7 · (n _s + 1) + / + 1) - (2- N% “+ 1) + ^ ANTPORT / 2];
c _init = 2- (7 - (^ + 1) + / + 1) - (2- N% “+ 1) + ^ ANTPORT / 4];
c _init = 2 ⁹ - (7 - (' _s + 1) + / + 1) - (2-Ag + 1) + ^ ANTPORT / 2j;
c _init = 2 ⁹ - (7 - (' _s + 1) + / + 1) - (2-Ag + 1) + ^ ANTPORT / 4j;
c _init = 2 ¹⁰ · (7 (n _s +1) + / + 1) - (2- N% “+1) + ^ ANTPORT / 2];
c _init = 2 ¹⁰ - (7- (n _s +1) + / + 1) - (2- N% "+ 1) + ^ ANTPORT / 4];
c _init = 2 ¹⁰ · (7 (n _s +1) + / + 1) - (2- N% “+1) + ^ ANTPORT / 2];
_c . _nit = 2 ¹⁰ - (7- (^ + 1) + / + 1) - (2-N ^ ¹ + 1) + 2-A “+ ^ ANTPORT I4 ;
_c . _nit = 2 ¹¹ · (7 · (n _s +1) + l +1) · (2 · Ν ^ “+1) + 4- N ^c ^“ + ^ ANTPORT / 2j;
c _imt = 2 ¹⁰ · (7 · (ns +1) + Z +1) · (2 · N ^c ^ '+1) - (2- [_ANTPORT / 4j +1) + 2N ^C ^' + NCP;
c _imt = 2 ¹⁰ · (7 · (ns +1) + Z +1) · (2 · N ^c ^ '+1) - (2- [_ANTPORT / 2 J +1) + 2N ^C ^' + NCP;
_c . _nit = 2 · (7 · (n _s +1) + / +1) · (2 · N ^c ^ “+ 1) - (2- [_ANTPORT / 4j +1) + N _CP ;
5/45 c _init = 8 · (7 · (n _s +1) + I +1) · (2 · N ^c ^ “+1) + 2- [_ANTPORT 12j + N _CP ;
c _init = 4 · (7 · (n _s +1) +1 +1) · (2 · N% ¹ +1) + 2- ^ ANTPORT / 4J + N _CP ;
c _init = 2 ⁹ - (7 - (^ + 1) + / + 1) - (2- ^ + 1) +2 - _ ANTPORT / 2 ^ + N _CP ;
c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 2 · [_ ANTPORT 14j + NCP;
c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N ^c ^ +1) + 2 · [_ANTPORT 14j + NCP;
c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N ^c ^ +1) + 2 · [_ANTPORT 12j + NCP;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N ^ ¹ +1) · (2 · ANTPORTNUM + 1) + N% ¹ ;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N ^c £ ^l +1) - (2- ANTPORTNUM +1);
c _init = 2 ^1ϊ - (Ί- (n _s + l) + l + l) - (2-N ^ ¹ + l) + 4N ^c £ ^l + ANTPORTNUM;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N '”+1) + ANTPORTNUM;
Cinit = 4 · (7 · (n _s +1) +1 +1) · (2 · N '”+1) + ANTPORTNUM;
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N ^ ¹ +1) · (2 · ANTPORTNUM + 1) + N% ¹ ;
c _init = 2 ¹¹ - (7 - (^ + 1) + / + 1) - (2-N ^ ¹ + 1) + 4 ^ + ANTPORTNUM;
c _init = 2 ¹² · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 8Λ + ', + 4NCP + ANTPORTNUM;
c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 4NCP + ANTPORTNUM;
c _init = 8 · (7 - (^ + 1) + / + 1) - (2-N ^ ¹ +1) + 4N _CP + ANTPORTNUM;
c _init = 2 ¹² · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 8N '”+ 2ANTPORTNUM + NCP;
c _init = 2 ⁹ - (7 - (^ + 1) + / + 1) - (2- ^ + 1) +2 ANTPORTNUM + N _CP ;
c _init = 8 · (7 · (n _s +1) +1 +1) · (2 · N ^ ¹ +1) + 2ANTPORTNUM + N _CP ;
_c .. _t = 2 ¹¹ - (7¼ +1) + / + 1) - (2-N ^ ¹ + 1) (2- [ANIPORT / 4] + 1) + 4N ^ ¹ + ANTPORTNUM;
c _init = 2 ⁹ - (7-¼ + 1) + 1 + 1) - (2- N% '+1) (2- [ANTPORT / 4] + 1) + ANTPORTNUM;
= 4- (7- (n _s +1) + 1 + 1) - (2-N ^ ¹ +1) (2- [ANTPORT / 4J + 1) + ANTPORTNUM;
c _init = 2 ¹⁰ (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + 8 (ANTPORT / 4J + ANTPORTNUM;
6/45 c _init = 2 ¹⁰ · (7 · (n _s +1) +1 +1) · (2 · N% ¹ +1) + 8 · ^ ANTPORT12j + ANTPORTNUM;
_{C] rit} = 2 ⁹ · (7 · (/ ¾ +1) + / + 1) · (2 · N ^ '+1) (2- [ANIPCRT / 4 + l) + $ N ^ + 4Ν _σ + ANIPORTNUM;
c _init = 2 ⁹ · (7 · {n _s +1) + 1 + 1) · (2 · N „+1) (2- [ANIPORT / 4j + l) + 4A _cy + ANTPORTNUM;
c _init = 2 ¹² - (7 - (^ +1) + / + 1) · (2 · N% ¹ + ΐ] (2 · ^ ΑΝΤΡΟΚΓ / 4] + ΐ) + 8Ν ^ ¹ + 2ANTPORTNUM + N _cp ;
c _init = 2 ⁹ · (7 · (n +1) + / +1) · (2 · 7V “+1) (2 · [ANTPORT / 4J +1) + 2ANTPORTNUM + N _cp ;
c _init = 8 · (7 · (n _s +1) + / +1) · (2 · +1) (2 · | _ANTPORT / 4J +1) + 2ANTPORTNUM + N _CP ;
c _init -2 ¹⁰ - (7- (n +1) + / + 1) - (2-N ^ ¹ + ^ +% - _ ANTPORT 12 + ANTPORTNUM + N _CP ;
where, n _s is the time slot index on a radio frame, / is the OFDM index on a time slot, Njd is the cell ID, and N _CP is the Cyclic Prefix length factor (CP ). When a subframe is a normal CP subframe, N _CP = 1, and when the subframe is an extended CP subframe, N _CP = 0 _r ANTPORT is the parameter related to the CSI-RS antenna port index, and ANTPORTNUM is o Parameter related to the cell's CSI-RS antenna port number.
The method can generate the first CSI-RS sequence, cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the subframe, and the method can also understand: obtain an initial value of pseudo-random sequence, according to the time interval index and cell ID; or obtain the pseudo-random sequence initial value, according to one or more of the three parameters of the parameter related to the CSI-RS antenna port number, the parameter related to the CSI-RS antenna port index and the length factor of Cyclic Prefix (CP), and the time slot index, and the cell ID.
7/45
The initial value of the pseudo-random sequence c _ynyl may be one of the following values:
Am, = (0./2) + 0- (2 ^ + 1) .2 ¹⁶ ;
A „, = (0./2) + 1) · (2 <+1);
α., = (Ο. / 2) +0 (2 <+02 ^{, 6} + <';
A „, = (O./2J + 1). (2C + 1) .2’ + <';
A „, = (0. Λ J +1). (2 <'+1) 2 “+ 2 <' + N _cr ;
A „, = (0./2) + 1). (2 <'+ 1) · 2 “+ Μ„;
A „, = (0. Λ J +1). (22V +1) 2 “+ 2 <'+ N _cr ;
Çnit = (L « _s / 2j +1) · (2 / Vg +1) - (2- LANTPORT / 2j +1) · 2 ⁹ + N ^ ¹ ;
Çnit = (L « _s / 2j +1) · (2 / Vg +1) - (2- LANTPORT / 4j +1) · 2 ⁹ + N ^ ¹ ;
9nit = { _n _s / 2] + 1) - (2N ^ + 1) - (2- ^ ANTPORT / 2] + 1 ~);
Çnit = (La / 2J +1) · (2K> +1) · 2 ¹⁶ + LANTPORT / 2J;
Çnit = (LA / 2J +1) · (2 AÇ> +1) · 2 ¹⁶ + L ANTPORT / 4J;
Çnit = (LA / 2J + 1) · (2AÇ> +1) - (2- LANTPORT / 2j +1) · 2 ¹⁰ + 2N% '+ N _CP ;
Çnit = (LA / 2J + 1) · (2AÇ> +1) - (2- LANTPORT / 4j +1) · 2 ¹⁰ + 2N% '+ N _CP ;
+ _Β = (0./2) + 1). (2 <'+ 1) · (2 · μΛΤ /> ΟΚΤ / ^ + 1) .2 + Λ <„;
Am, = 2 “(0./2J + 1)’ (2 <‘+ 0 + 2lANTPORTI4 + N„;
+, „, = 2 ^I6 . (0, / 2J + O (2 < ¹ +1) + 2.L>1A'I - /> OKT / 2J + M _c . _F ;
Çnit = (LA / 2J + 1) · (2 / Vg +1) - (2- ANTPORTNUM +1) · 2 ¹⁰ + 2N% ¹ + N _CP ;
Çnit = (La / 2J +1) · (2 Afo +1) · (2 · ANTPORTNUM +1) · 2 + N _CP ;
Çnit = (LA / 2J + 1) · (2 / Vg +1) · 2 ¹² + 8 / Vg + 4N _CP + ANTPORTNUM;
Çnit = ( _n _s / 2] + l) - (2N ^ +1) -2 ^U + SN ^C ^ + 2ANTPORTNUM + N _CP ;
Çnit = (LA / 2J + 1) · (2 / Vg +1) · 2 ³ + 2ANTPORTNUM + N _CP ;
8/45
Çnit = (La / ² J + i) ( ² <+1) · 2 ³ + 4M _CP + ANTPORTNUM;
qnit = (La I ² J +1) '( ² Agjj + 1) - (2- ANTPORTNUM +1) · 2 ⁹ + N% ¹ ;
Çnit = (LaI ² J +1) · ( ² ^ ¹¹ +1) - (2- ANTPORTNUM +1);
Cinit = (La / 2J +1) (2M “ ^U +1) · 2 ¹⁶ + ANTPORTNUM;
Cinit = (La / 2J +1) · (2Λ + / ¹¹ +1) -4 + ANTPORTNUM;
Çnit = (La / ² J +1) · (2M “ ^U +1) · 2 ¹¹ + 4Λ + / + ANTPORTNUM;
c _init = (La / ² J + i) · ( ^2A ro “+1) - (2 - _ ANTPORT / 4 J +1) · 2 ¹¹ + 4N ^ ¹ + ANTPORTNUM;
Cinit = (LA / 2J +1) - (2 AÇjj +1) - (2- ^ ANTPORT / 4j +1) · 4 + ANTPORTNUM;
gun = (La / ² J +1) · (2M “ ^U +1) - (2- ^ ANTPORT / 4j +1) · 2 ¹⁶ + ANTPORTNUM;
Çnit = (La / ² J +1) · (2M “ ^U +1) · 2 ¹⁶ + 8 · ^ ANTPORT / 2j + ANTPORTNUM;
Çnit = (La / ² J +1) · (2M “ ^U +1) · 2 ¹⁶ + 8 · ^ ANTPORT / 4j + ANTPORTNUM;
^c init = (LaI ² J +1) · (2A “ ^U +1) - 2 ¹⁶ + 2 ⁴ - LANTPORT / 2J + 2 - ANTPORTNUM + N _CP ;
^c init = (LaI ² J +1) · (2A “ ^U +1) - 2 ¹⁶ + 2 ⁴ -1_ANTPORT / 4J + 2 - ANTPORTNUM + N _CP ;
where, n _s is the time slot index on a radio frame, N ^ ¹ is the cell ID, when the subframe is the normal CP subframe, 2V _CP = 1, and when the subframe is the subframe of extended CP, N _CP = Q ANTPORT parameter is related to the antenna port index CSI-RS, and p £ ANTPORTNUM _air aMetro related to the antenna port number CSI-RS of the cell.
The method can generate the first CSI-RS sequence and cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the OFDM symbol; where in the step of generating the pseudo-random sequence, according to an initial value of the pseudo-random sequence, and perform the QPSK modulation in the pseudo-random sequence
9/45 r (m) = -j = (l-2-c (2m)) + jj = (l-2-c (2m + l)), m = to obtain the first CSI-RS sequence, a pseudo-random sequence c (n) can be generated, according to the following modes:
c (n) = + N _c) + x ₂ (n + A _c)) mod 2 x _l (n + 31) - (XJC / i + 3) + a (/ 7)) mod 2 x ₂ (n + 31) - {x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (/ 7 +1) + x ₂ (/ 7)) mod 2 where, 3 / (0) - 1, x _l (n) - 0, n - 1,2, ..., 30, N _c = 1600, x ₂ (n) - 0, n - 0,1,2, ..., 30 are produced according to with a pseudo-random sequence initial value
Enit ⁼ (#) ', and mod is modular arithmetic; and the first CSI-RS r (m) sequence can be generated, according to the following modes:
r (m) = -j = (l - 2-c (2m)) + jj = [l - 2-c (2m + l)), m = 0, l, ..., N ^ ' ^DL - 1 or
Ί Γ 3 λ t max, DL λ t max, DL -i where, JV ™ ' ^DL is the maximum bandwidth of the * 7 max, DL ii λ system, / V _RB = 110.
The step of cutting the first CSI-RS sequence, according to the current system bandwidth, can comprise: calculating a location index i 'according to the current N® bandwidth of the system and cutting the first sequence of CSI-RS r (m) according to the index of r location i 'to obtain the second sequence of CSI-RS r _ln (zj of the OFDM symbol l in time interval n _s ; and the step of mapping the second CSI-RS sequence to the time frequency location of the CSI-RS antenna port can comprise: map the second CSI-RS sequence r _ln (ij to a subcarrier k of the OFDM symbol l of the antenna port
10/45 of CSI-RS p through 6¾ = w _r · r _tn (i '), where, 6¾ is a value of RE that corresponds to the antenna port of CSI-RS p, and is an orthogonal code factor .
I n ^ ' ^dl -n ^ I. f _v I AD AD I location index can be ι - zH --------, / = 0.1, -, Cb-i;
in the step of mapping the second CSI-RS r _ln (/ ') sequence to the subcarrier k of the OFDM I symbol of the CSI-RS p antenna port, = w _r -r _ln (/'), there are:
i-0 3 and {1116} ..CP Normal
I-6 and | 17 ... 18}: GF Normal p ú} -1 9 20 .CP}, _ _Normal; j- 'FA (27. = / 22} GP Normal
-0 c ξ 115.16}, Extended GF i -i p and {1718} .CP Extended:
I -6 and {19.20}, CP Éstendíd ©
I -9. j and {2122} GF Extended when using the extended CP the dexterous disMtquadFO type 1 or 2 .. the number symbol of the COM group when using the extended CP and the type of sub-frame 1 or 2, the second symbol of the COM group when using the -o CP: normal and the «po de« strut ura de sá bq.u ad ró 2, -the second symbol of the groupCIW
O, Z = Z 'Z = {
Ι, Ζ ^ Ζ '
pe {15,17,19,21} p & {16,18,20,22} 'where, k' is a frequency domain location of the first CSI-RS antenna port, Γ is a domain location of initial time of the first CSI-RS antenna port, and the first CSI-RS sequence r (m) is r (m) = - ^ = (l-2-c (2m)) + j - ^ = ( l-2-c (2m + l)), at max, DL 1 '' 'K_D ·
11/45 location index can be in the step of mapping the second CSI-RS sequence r _ln (/ ') to the subcarrier k of the OFDM symbol l of the CSI-RS antenna port p, ^a k, i ^{= w} r ' ^r i, n ^ r there is:
p and formal CP í — 6 j Ξ formal
1-1 p and fly 2- cp [-7 j and p 1.22] CP Mmal
16] CP £ stendsdc | -3 £ and p ”J $ l -CP Extended. % 6; n 6) 19 2 · , CP Extended. ] 9 / - 6 p 1.22] .CP Extended
When using normal CP, the CSI-RS configuration index is 0 ~ 19 When using normal CP, the CSI-RS configuration index is 2G ~ 31
When using CP extendido, the CSi -RS configuration index is ü ~ 27
Ze {0, l}
pe {15,17,19,21} g {16,18,20,22} 'where, k' is the location of the frequency domain of the first CSI-RS antenna port, Γ is the location of the domain of initial time of the first CSIRS antenna port, and the first CSI-RS sequence r (m) is r (m) = - ^ = (l-2-c (2m)) + / - ^ = (1-2 -c (2m + l)),
O-ι xrmax, DL 1 '' 'Kt> ·
The location index can be / = 0.1, ..., 2 ^ -1, and ^{7 7 7} K_D 'the first CSI-RS sequence r (m) is cut to obtain the second
12/45 CSI-RS sequence r _ln (/ ') in the time interval n _s of the OFDM symbol /;
in the step of mapping the second CSI-RS sequence r _ln (z ') to the subcarrier k of the OFDM I symbol of the CSI-RS antenna port p, = w _r · η _n (z'), there are:
i -0> € -15.16} .CP Normal
I -6> and 11 1, CP Normal | -1> and {19.20} .CP Normal
..... ..... Í— “121.22'CP Normal: JcA 12. ( ModÁ ^ +: t /“ ” ^; i — 9> e {15,16, ·, Extended CP
I —3> and '1 “, 13; _; CP Extended
I —6> and {19.20} .CP Extended
1-9> and {21.22}, Extended CP
When using normal CP, the CSI-RS configuration index is δ ~ 19
When using normal CP, the CSS-P.S configuration index is 2 £> ~ 31
When using extended CP, the CSI-RS configuration index is O ~ 27
{15,17,19,21} / And {16,18,20,22} where, k 'is the location of the frequency domain of the first CSI-RS antenna port, Γ is the location of the domain of initial time of the first CSIRS antenna port, and the first CSI-RS sequence r (m) is r (m) = -y = (l-2-c (2m)) + j - ^ = (l-2 -c (2m + l)),
The location index can be • | λ t max, DL ¹ * ^ RB to ^{dl jv} RB / = 0 i = 0.1
2A ° b -1;
z - <^ + A _r T ' ^dl in the step of mapping the second CSI-RS sequence
13/45 r _ln (zj for the subcarrier k of the OFDM I symbol of the CSI-RS antenna port p, cr _k ^p _t = w _v . · R _tn (z '), there are:
f-0: “1 t
k = LmiMz mod H {i —3 i-9 j> <= {15,161 .CP Normal
Normal j -2; ld. 20 * _CP Normal] CP Normal p e; 15.16} .CP Extended p € 18 (.CP Extended
20} Extended CP lz <= ‘21 22:, Extended CP .J ·. 1 · -. - ·} · *
When using normal CP, the CSI-RS configuration index is Q ™ 19 When using normal CP, the CSI-RS configuration index is 2O ~ 31
When using extended CP, the CSI-RS configuration index is O ~ 27 r = | _í / jv ” ^L Je {o, i)
pc {15,17,19,21} p and {16,18,20,22} r (m) = -y = (l —2 · c (2m)) + - 2-c (2m + l)), m - where, k 'is the location of the frequency domain of the first antenna port of CSI-RS, Γ is the location of the initial time domain of the first antenna port of CSIRS, and the first sequence of CSI-RS r (m) is
Ί Γ A ^x »Tinax, DL xrmax, DL i * RB - 1.
method can generate the first CSI-RS sequence, cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the subframe; and in the step of obtaining the pseudo-random sequence 15, according to an initial value of the pseudo-random sequence, and performing the QPSK modulation in the pseudo-random sequence to obtain the first CSI-RS sequence, the pseudo-random sequence c (n) can be generated according to the following modes:
14/45 c (n) = (¾ (η + N _c ) + x ₂ (n + N _c )) mod 2 x _r (n + 31) = (¾ (n + 3) + x ₁ (n)) mod 2 x ₂ (n + 31) = (x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (n + 1) + x ₂ (n)) mod 2 where, Xj (O) = 1, χ _γ (η) = 0, n = 1,2, ..., 30, 2V _C = 16OO, x ₂ (n) = 0, n = 0,1,2, ..., 30 are produced according to an initial pseudo-random sequence value
Knit ~ ‘i and mod is modular arithmetic;
the first CSI-RS r (m) sequence can be generated, according to the following modes:
r (m) = -y = (l —2 · c (2m)) + j - / = (l —2-c (2m + l)), m - 0.1, ..., 2N ^ ' ^OL - 1 ;
where, is the maximum system bandwidth, V = 110.
The step of cutting the first CSI-RS sequence, according to the current system bandwidth, can comprise: calculating a location index i 'according to the current system bandwidth and cutting the first CSI sequence -RS r (m) according to the index of r location i 'to obtain the second sequence of CSI-RS r (/') ⁿ sn in the subframe -; and the step of mapping the second sequence of
CSI-RS for the time frequency location of the CSI-RS antenna port may comprise: map the second CSI-RS sequence r (/ ') to the subcarrier k of the OFDM symbol l of the CSI- antenna port RS p through = w _r r _n Çi ');
where aff is the value of RE that corresponds to the antenna port of CSI-RS p, w _r is the orthogonal code factor, and _s is the time interval index.
The location index can be
15/45 i '= i + - / Vj’j, z = 0.1, ..., 2 <} -1;
in the step of mapping the second sequence of CSI-RS r (ij for the subport worship k of the ⁿ s of the CSI-RS / antenna, there are:
I -6: '—2
L ~ 1-5-.
......... -..... ^-
H6 j-9 OFDM I symbol of the j gate ε {15,16}, cp € (1 ç IS}, CP formal _p £ fly, 20}, CP formal pe {21 22 'CP formal p- £ (15,16} .CP Extended pe {17, 18} .CP Extended £ (19.20}, CP Extended £ (2 22., CP Extended
Quango using CP norm CSi-RSè G ~ 19 configuration index
When using CP standard) the CSi-RS configuration index is 2O ~ 3i
When using extended CP, the CSi-RS configuration index is O ~ 27
/ e {15,17,19,21} / e {16,18,20,22} 'where, k' is the location of the frequency domain of the first CSI-RS antenna port, and Γ is the initial time domain location of the first CSI-RS antenna port.
In order to solve the above problems, the present invention also provides a device for generating and mapping the CSI-RS sequence, which comprises a generation unit and a mapping unit, in which:
the generation unit is configured to: generate a pseudo-random sequence, according to an initial value of the pseudo-random sequence, perform a QPSK modulation on the pseudo-random sequence, and obtain a first sequence of
CSI-RS, according to the maximum system bandwidth;
the mapping unit is configured to: cut
16/45 the first CSI-RS sequence, according to the current system bandwidth, obtain a second CSIRS sequence, and map the second CSI-RS sequence to a time frequency location of an antenna port of CSI-RS.
The generation unit can be configured to generate the pseudo-random sequence and obtain the first CSI-RS sequence, based on an OFDM symbol or a subframe;
the mapping unit can be configured to cut the first CSI-RS sequence, to obtain the second CSI-RS sequence, and map the second CSI-RS sequence to the CSI- antenna port time frequency location RS as follows:
when the second CSI-RS sequence is mapped based on the OFDM symbol, the second CSI-RS sequence mapped to two OFDM symbols that are located in the same CDM group are produced from different first CSI-RS sequences ;
when the second CSI-RS sequence is mapped based on the subframe, the second CSI-RS sequences mapped to the two OFDM symbols, which are located in the same CDM group, are produced from different parts of the same first sequence of CSI-RS.
In order to solve the above problems, the present invention also provides an evolved Node B (eNB), which comprises a device for generating and mapping a CSI-RS sequence, and the device comprises a generation unit and a mapping, where:
the generation unit is configured to: generate a pseudo-random sequence, according to an initial value of the pseudo-random sequence, perform a QPSK modulation on the pseudo-random sequence, and obtain a first sequence of
17/45
CSI-RS, according to the maximum system bandwidth;
the mapping unit is configured to: cut the first CSI-RS sequence, according to the current system bandwidth to obtain a second CSI-RS sequence, and map the second CSI-RS sequence to a location of time frequency of a CSI-RS antenna port.
In order to solve the above problems, the present invention provides a User Equipment (UE), which comprises a generation unit, a mapping acquisition unit, a receiving unit and a measurement unit, in which:
the generation unit is configured to: generate a pseudo-random sequence, according to an initial value of the pseudo-random sequence, perform a QPSK modulation on the pseudo-random sequence, and obtain a first CSI-RS sequence, according to the maximum bandwidth of the system;
the mapping acquisition unit is configured to: cut the first CSI-RS sequence, according to the current system bandwidth, and obtain a second CSI-RS sequence configured to be mapped to a time frequency location a CSI-RS antenna port;
the receiving unit is configured to: receive a CSI-RS sequence sent by the evolved Node B (eNB) at the time frequency location of the CSI-RS antenna port;
the measurement unit is configured to: calculate the CSI-RS sequence received by the receiving unit and the second CSI-RS sequence obtained by the mapping acquisition unit, and perform channel estimation and channel measurement.
With the present invention, the signal sequence of
18/45 CSI-RS reference can be generated or obtained respectively at the UE terminal and eNB terminal, according to the declared method to generate the method and reference sequence to map the reference sequence, according to the known parameters , so that the calculated CSI-RS sequence can be used to measure the channel at the UE terminal.
BRIEF DESCRIPTION OF THE DRAWINGS
The figure 1 illustrates a way of distribution in sequence, While choose the CP Normal i so FDD in sequence from CSI-RS based on OFDM symbol. The figure 2 illustrates a way of distribution in sequence, While choose CE > Normal mode only TDD in sequence from CSI-RS based on OFDM symbol. The figure 3 illustrates a way of distribution in sequence, While choose the Extended CP so FDD in sequence from CSI-RS based on OFDM symbol. The figure 4 illustrates a way of distribution in sequence while choosing the CP Extended from Only mode TDD of CSI- RS based in the symbol of OFDM. The figure 5 illustrates a way of distribution in sequence While choose the Normal CP in FDD mode in sequence from CSI-RS based on subframe. The figure 6 illustrates a way of distribution in
sequence while choosing Normal CP in CSD-RS sequence only TDD mode based on the subframe.
Figure 7 illustrates a sequence distribution mode while choosing the CSI-RS sequence FDD mode Extended CP based on the subframe.
Figure 8 illustrates a sequence distribution mode while choosing the CSI-RS sequence TDD Only Extended CP based on the subframe.
Figure 9 is a flow chart of the method for generating and
19/45 to map the CSI-RS sequence, according to the examples of the present invention.
PREFERENTIAL MODALITIES OF THE PRESENT INVENTION
The present invention will be described in detail in combination with the attached drawings and specific examples below.
As shown in Figure 9, this is a flow chart of the method for generating and mapping the CSI-RS sequence, according to the examples of the present invention, and the following steps are understood.
In step 901, a pseudo-random sequence is generated, according to an initial value of the pseudo-random sequence, and a Quadrature Phase Shift (QPSK) modulation is performed on the pseudo-random sequence, the first CSI-RS sequence is obtained from according to the maximum system bandwidth, where the maximum system bandwidth is 110 RB.
In step 902, the first CSI-RS sequence is cut, according to the current system bandwidth, and a second CSI-RS sequence is obtained, and the second CSI-RS sequence is mapped to a location of time frequency of a CSI-RS antenna port.
Specifically, eNB sends the second CSI-RS sequence to the UE through the steps above;
the UE also acquires the second CSI-RS sequence from each CSI-RS antenna port through the steps above, and performs relevant calculations on the second CSI-RS sequence and the CSI-RS sequence received from the eNB, and performs channel estimation and channel measurement.
In the method, the CSI-RS sequence can be generated and mapped based on an OFDM symbol or a subframe: when the CSI-RS sequence is generated and mapped based on the OFDM symbol, the second CSI- LOL
20/45 mapped to two OFDM symbols, which are located in the same CDM group, are produced from different first CSI-RS sequences;
when the CSI-RS sequence is generated and mapped based on the subframe, the second CSI-RS sequences mapped to the two OFDM symbols, which are located in the same CDM group, are produced from different parts of the same first sequence of CSI-RS.
The examples based on the OFDM symbol and the subframe are described in detail below respectively.
Example one: The sequence of CSI-RS is generated and mapped based on the OFDM symbol.In the example, the sequence of CSI-RS is generated and mapped according to at steps to follow go, and the sequence in
Mapped CSI-RS is shown in Figure 1 to Figure 4.
In step 1, an initial value of pseudo-random sequence Gnit θ generated.
In step 2, the pseudo-random sequence c (rí) is generated.
In step 3, the QPSK modulation is performed in the pseudo-random sequence, and the first CSI-RS sequence
r (m) is obtained, according the width in _{Ί η} z xrmax, DL max band / v _RB of the system. At step 4, one index in i 'location is calculated, according to width in current band ofKd
system, and the first sequence of CSI-RS r (m) is cut, according to the location index i ', and the second sequence of CSI-RS r _Zn (/') is obtained.
In step 5, the second CSI-RS sequence r _ln (/ ') is mapped to the subcarrier k of the OFDM symbol l of the port
21/45 CSI-RS antenna p, a ⁽ k ^p t = w _r -r _ln (('), where / ¾ is a RE value that corresponds to the CSI-RS antenna port p, and w _r is an orthogonal code factor.
Wherein, the pseudo-random sequence is also called the scramble code or the code sequence
in scrambling, and a value initial in sequence pseudo-randomness is also call of initial value of code in shuffling.In step 1, in order to totally make random a
interference between multiple cells, in an application example, the calculation of the initial value of scrambling code adopts any of the following formulas:
= 2 ’(7 (», +1) +1 +1) (2 N £ +1) + N £;
^, = 2 ^ (7. ^, + 1) + / + 1). (2. ^ + 1);
= (7 · (», + ι) + '+ ι) · (2 · <' +1);
where, n _s is a time frame index in a radio frame, l is an OFDM index in a range of λ t cell time, and IVid is the cell ID (a physical cell ID).
If the CSI-RS is considered to be used to verify the length of the CP, the necessary parameter for the calculation of such initial value may be the time interval index, the OFDM symbol index in a time interval, the ID of the cell and a CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
= 2 "(7 (», +1) + / + 1) - (2. + l) + 2-Ng I
A „, = 2“ (7 - (», + l) + l + l) - (2- <'+ l) + / V„ +,. ,, = 2- (7- ( _n , + l) + / + l) - (2./V2° + l) + / V „
22/45 where, n _s is the time slot index on a radio frame, l is the OFDM index on a time slot, N ^ ”is the cell ID, and N _CP is the length factor of the CP. When the subframe is Normal CP, N _CP = 1, otherwise N _CP = 0.
In addition, in order to produce interference from CSI-RS antenna ports located on two adjacent subcarriers of the same randomized cell, the necessary parameter for calculating such initial value may be the time interval index, the OFDM symbol over a period of time, the cell ID and the parameter related to the antenna port index. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N '^ +1) · (2 · [_ANTPORT / 4j +1) + N% ¹ c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N '^ +1) · (2 · [_ANTPORT / 2j +1) + N% ¹ c _init = (7 (n _s +1 ) +1 +1) · (2 · N '^ +1) · (2 · [_ ANTPORT / 4j +1) c _init = (7 (n _s +1) +1 +1) · (2 · N' ^ +1) · (2 · [_ ANTPORT / 2j +1) c _init = 4 · (7 · (n _s +1) +1 +1) · (2 · N ™ “+1) + ^ ANTPORT / 2j c _init = 2 · (7 · (n _s +1) +1 +1) · (2 · N ™ “+1) + ^ ANTPORT / 4j c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ '+1) + [_ANTPORT / 2j cinit = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^' +1) + [_ANTPORT / 4j c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N '^ +1) + [_ANTPORT / 2j cinit = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N '^ +1) + [_ANTPORT / 4j c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N' ^ +1) + [_ANTPORT / 2j cinit = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N ^c ^ +1) + 2 · N% ¹ + [_ANTPORT / 4j
23/45 c _init = 2 ¹¹ · (7 · (n _s +1) +1 + 1) · ( ² · Ν „+1) + ⁴ · N ^c ^ '+ [_ANTPORT 12j where, n _s is the time slot index on a radio frame, l is the OFDM index on a time slot, and N ^c ^ 'is the cell ID; ANTPORT is the parameter related to the CSI-RS antenna port index and corresponds to the CSI-RS antenna port {15, 16, 17,18,19, 20,21,22}, and the ANTPORT value can be respectively {0, 1, 2, 3, 4, 5, 6, 7}; or, the value of
ANTPORT can be respectively {15, 16, 17, 18, 19, 20, 21, 22}, or, the ANTPORT value is respectively {15-2, 162, 17-2, 18-2, 19-2, 20 -2, 21-2, 22-2}, or, the ANTPORT value can be generated according to other parameters related to the CSI-RS antenna port.
In addition, in order to produce interference from CSI-RS antenna ports located on two adjacent subcarriers of the same randomized cell and consider that the length of the CP is verified, the necessary parameter for calculating such initial value may be the time interval index, the OFDM symbol index in a time interval, the cell ID, the parameter related to the antenna port index and the CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
Cnit = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N ”+1) - (2- [_ANTPORT / 4j +1) + 2N” + NCP Cnit = 2 ¹⁰ · (7 · (Ns +1) +1 +1) · (2 · N ”+1) - (2- [_ANTPORT / 2j +1) + 2N” + N _CP c _init = 2 · (7 · (n _s +1 ) + Z +1) · (2 · ^N id +1) - (2- L ANTPORT / 4j +1) + NCP cinit = 8 · (7 · (ns +1) +1 +1) · (2 · N '^ +1) + 2 · [_ ANTPORT / 2j + NCP cinit = 4 · (7 · (ns +1) +1 +1) · (2 · N' ^ +1) + 2 · [_ ANTPORT / 4j + NCP cinit = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^c ^ +1) + 2 · [_ANTPORT / 2j + N _CP
24/45 c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 2 · [_ANTPORT 14j + NCP c _init = 2 ¹⁰ · (7 · ( ns +1) +1 +1) · (2 · N ^c £ ^l +1) + 2 · ^ ANTPORT14j + NCP c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N ^c £ ^l +1) + 2 · ^ ANTPORT12j + NCP
in what: n _s θ O range index of time in one picture of radio, l is O OFDM index in a break in time is -KjcellID is the ID gives cell. When one subframe is one subframe in CP Normal, N _CP = 1, when the subframe is one subframe in CP Extended, N _CP = 0, and ANTPORT is the Parameter
related to the CSI-RS antenna port index.
In addition, considering that the number of the cell's CSI-RS antenna ports can be blindly detected, the necessary parameter for the calculation of such initial value can be the time interval index, the OFDM symbol index in a time slot, the cell ID, and the parameter related to the CSI-RS antenna port number. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N ^c £ ^l +1) · (2 · ANTPORTNUM +1) + N% ¹ c _init = 2 ⁹ · ( 7 · (n _s +1) +1 +1) · (2 · N ^c £ ^l +1) · (2 · ANTPORTNUM +1) _c . _nit = 2 ¹¹ · (7 · (n _s +1) +1 +1) · (2 · N% '+1) + 4N ^C ^' + ANTPORTNUM c _init = 2 ⁹ · (7 · (n _s +1 ) +1 +1) · (2 · N ^ ¹ +1) + ANTPORTNUM c _init = 4 · (7 · (n _s +1) +1 +1) · (2 · N, ^e +1) + ANTPORTNUM c _init = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · N ^c £ ^l +1) · (2 · ANTPORTNUM +1) + N% ¹ c _init = 2 ¹¹ · (7 · (N _s +1) +1 +1) · (2 · N% '+1) + 4N ^C ^' + ANTPORTNUM
on what, n _s is the index of interval in time in one painting radio, Z is the index of OFDM in one interval in time, θ ^a ID cell, ANTPORT is the parameter
25/45 related to the CSI-RS antenna port index and can correspond to the CSI-RS antenna port {15, 16, 17,18,19, 20,21,22}, the ANTPORT value is respectively { 0,1,2,3,4,5,6,7}; or, the ANTPORT value is respectively {15, 16, 17, 18, 19, 20, 21, 22}, or, the ANTPORT value is respectively {15-2, 16-2, 17-2, 18-2 , 19-2, 20-2, 21-2, 22-2}; or, the ANTPORT value can be generated according to other parameters related to the CSI-RS antenna port; and ANTPORTNUM is the parameter related to a cell's CSI-RS antenna port number. For example: when the number of CSI-RS antenna ports is 1, the value of ANTPORTNUM is 2, when the number of CSIRS antenna ports is 2, the value of ANTPORTNUM is 3, when the number of antenna ports CSI-RS is 4, the ANTPORTNUM value is 4, when the number of CSI-RS antenna ports is 5, the ANTPORTNUM value is 3, or when the number of CSI-RS antenna ports is 2, the ANTPORTNUM value is 0, when the number of CSI-RS antenna ports is 4, the ANTPORTNUM value is 1, when the number of CSI-RS antenna ports is 8, the ANTPORTNUM value is 2, the ANTPORTNUM value is reserved for 3, or ANTPORTNUM are other values related to the number of a cell's CSI-RS antenna ports.
Furthermore, considering that the number of the cell's CSI-RS antenna ports can be blindly detected and the length of the CP can be verified, the necessary parameter for the calculation of such initial value may be the time interval index , the OFDM symbol index over a period of time, the cell ID, the parameter related to the CSI-RS antenna port number and the CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
26/45 c _init = 2 ¹² · (7 · (ns +1) +1 +1) · (2 · N% '+1) + 8N ^C ^' + 4NCP + ANTPORTNUM c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 4NCP + ANTPORTNUM c _init = 8 · (7 · (n _s +1) +1 +1) · (2 · N ^ ¹ +1) + 4N _CP + ANTPORTNUM c _init = 2 ¹² · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 8N ^c £ ^l + 2ANTPORTNUM + NCP c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N ^ ¹ +1) + 2ANTPORTNUM + NCP c _init = 8 · (7 · (n _s +1) +1 +1) · ( 2 · N ^ ¹ +1) + 2ANTPORTNUM + N _CP
on what, ⁿ _s it's the index in time interval in one painting radio, l it's the index in OFDM in a range in time, N _m and a ID gives cell, when the subframe is the CP
Normal, 7V _CP = 1, otherwise N _CP = 0, ANTPORT is the parameter related to the CSI-RS antenna port index, and ANTPORTNUM is the parameter related to the cell's CSI-RS antenna port number. For example: when the number of CSI-RS antenna ports is 1, the value of ANTPORTNUM is 2, when the number of CSI-RS antenna ports is 2, the value of ANTPORTNUM is 3, when the number of ports antenna port is 4, the value of AlNTPORTNUM is 4, when the number of antenna ports of CSI-RS is 8, the value of ANTPORTNUM is 5, or when the number of antenna ports of CSI-RS is 2, the ANTPORTNUM value is 0, when the number of CSI-RS antenna ports is 4, the ANTPORTNUM value is 1, when the number of CSI-RS antenna ports is 8, the ANTPORTNUM value is 2, the ANTPORTNUM value is reserved for 3, or ANTPORTNUM is other values related to the number of a cell's CSI-RS antenna ports.
In addition, in order to produce interference from CSI-RS antenna ports located on two adjacent subcarriers of the same randomized cell and consider that the cell's CSI-RS antenna port numbers can be
27/45 blindly detected, the necessary parameter for the calculation of such initial value can be the time interval index, the OFDM symbol index in a time interval, the cell ID, the parameter related to the port number of CSI-RS antenna, the parameter related to the CSI-RS antenna port index and the CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
c _init = 2 ¹¹ · (7 · (ns +1) + 1 + 1) · (2 · N% +1) (2 · (AMPOPT / 4 J + 1) + 4N% + ANTPORTNUM cinit = 2 ⁹ · ( 7 · (ns +1) +1 +1) · (2 · Nj ^and +1) (2 · [_ ANTPORT / 4j + 1) + ANTPORTNUM cinit = 4 · (7 · (ns +1) +1 +1 ) · (2 · N% '+1) (2 · [ANTPORT / 4j +1) + ANTPORTNUM cinit = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N%' +1 ) + 8 · [_ANTPORT / 4j + ANTPORTNUM c _init = 2 ¹⁰ · (7 · (n _s +1) +1 +1) · (2 · +1) + 8- [_ANTPORT / 2j + ANTPORTNUM where: n _s is the time slot index on a radio frame, l is the OFDM index on a time slot, N ^ ^{! í} is the cell's physical ID, ANTPORT is the parameter related to the CSI antenna port index -RS, and ANTPORTNUM is the parameter related to the cell's CSI-RS antenna port number. For example, when the number of CSI-RS antenna ports is 1, the value of ANTPORTNUM is 2, when the number of CSI-RS antenna ports is 2, the ANTPORTNUM value is 3, when the number of CSI-RS antenna ports is 4 , the ANTPORTNUM value is 4, when the CSI-RS antenna port number is 8, the ANTPORTNUM value is 5, or when the CSI-RS antenna port number is 2, the ANTPORTNUM value is 0 , when the number of CSI-RS antenna ports is 4, the value of ANTPORTNUM is 1, when the number of CSI-RS antenna ports is 8, the value of ANTPORTNUM is 2, the value of ANTPORTNUM is reserved for 3, or, ANTPORTNUM is other values related to the number of
28/45 single cell CSI-RS antenna ports.
In addition, in order to produce interference from CSI-RS antenna ports located on two adjacent subcarriers of the same randomized cell, and consider that the cell's CSI-RS antenna port numbers can be blindly detected, and also it is necessary that the length of the CP is to be detected, the necessary parameter for the calculation of such initial value can be the time interval index, the OFDM symbol index in a time interval, the cell ID, the related Parameter the CSI-RS antenna port number, the parameter related to the CSI-RS antenna port index and the CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
c _init = 2 ⁹ - (7 - (^ + 1) + / + 1) - (2- ^ + l) (2 - [_ ANTPORT / 4] + l ') + 8N ^ l' + ANCP + ANTPORTNUM cinit = 2 ⁹ · (7 · (ns +1) + 1 + 1) · (2 · +1) (2 · [_ ANTPORT / 4j + 1) +4 A _{r / 1} + ANTPORTNUM c _lnll = 2 '+ (7 - (/ r +1) + / + 1) - (2-AÇ; +1) (2- [A / V7PCM T / 4j +1) + SAÇ, + 2ANTPORTNUM + N _CP c _irit = 2 ⁹ - ( l- (n +1) + 1 + 1) - (2-N% ¹ +1) (2 - _ ANTPORT / 4] +1) + 2ANTPORINUM + Ncp Cj] .t = 8- (7- (ns + 1) + 1 + 1) · (2- N% +1) (2- [ANTPORT / 4] + l) + 2ANTPORTNUM + NCP cmit = 2 ¹⁰ · (7 · (n +1) +1 +1) · (2 · +1) +8 · [_ ANTPORT / 2 J + ANTPORTNUM + NCP where, n _s is the time interval index on a radio frame, Z is the OFDM index on a time interval, N ^ “Is the cell's physical ID, when the subframe is the Normal CP subframe, N _CP = 1, when the subframe is the Extended CP subframe, N _CP = 0, ANTPORT is the parameter related to the antenna port index CSI-RS, and the value can be from 0 to 7. ANTPORTNUM is the parameter related to the CSI-RS antenna port number of a
29/45 cell. For example, when and the antenna port of CSI-RS 1, the value of ANTPORTNUM is 2, when it is the antenna port of CSI-RS 2, the value of ANTPORTNUM is 3, when it is the antenna port of CSI- RS 4, the value of ANTPORTNUM is 4, when it is the antenna port of CSI-RS 8, the value of ANTPORTNUM is 5, or, when it is the antenna port of CSI-RS 2, the value of ANTPORTNUM is 0, when it is the antenna port of CSI-RS 4, the value of AlNTPORTNUM is 1, when it is the antenna port of CSIRS 8, the value of AlNTPORTNUM is 2, the value of AlNTPORTNUM is reserved for 3, or ANTPORTNUM is other values related to the number of a cell's CSI-RS antenna ports.
In step 2, the pseudo-random sequence c (n) is obtained in accordance with the following modes:
c (n) = + 2V _C ) + x ₂ (n + ZV _c )) mod2 x, (n + 31) = (% ₁ (7i + 3) +% ₁ (7i)) mod2% ₂ (ti + 31) ) = (% ₂ (/ i + 3) +% ₂ (/ i + 2) +% ₂ (/ i + l) +% ₂ (/ i)) niod2 where, .v / O) = 1, χ _γ (η) = 0, n = 1,2, ..., 30, N _c = 1600, x ₂ (n) = Ο, τϊ = 0,1,2, ..., 30 are produced according to the initial value of the pseudo-random sequence Gnít ~ (ff) '2 and mod is modular arithmetic.
In step 3, a first CSI-RS r (m) sequence is generated in accordance with the following modes:
r (m) = —j = (l -2-c (2m)) + - 2 -c (2m + 1)), m = 0.1, ..., A _RB ^{X, DL} -1 or r ( m) = - ^ = (l - 2-c (2m)) + jj = (l - 2-c (2m + l)),
Max r max. Dl. ,,, where, θ _the maximum system bandwidth, <T ' ^DL = 110.
30/45
In steps 4 ~ 5, in an application example, the first sequence of
IN ™ ' ^dl -N% I
CSI-RS r (m) and cut according to z - i + ---------- 2 i = “I to obtain the second sequence of CSI-RS r _Zn (z ') in time interval n _s of the OFDM / symbol;
the second sequence of CSI-RS r, (z ') is mapped to í, n _s the subcarrier k of the OFDM / symbol of the CSI-RS / antenna port, aff = w _r · r _ln (z') , where, is the value of RE that corresponds to the antenna port of CSI-RS pew _r is the factor of 10 orthogonal code;
where, is the actual system bandwidth, [-0 pe {15.16}, normal CP | -6 p and {17.18}, normal CP | -1 p and {19.20}, normal CP, _ | -7 p and {21.22), normal CP k = k +12 + {
) -0 p and {15.16), extended CP j -3 p and 117.18}, extended CP {-6 p and {19.20), extended CP-9 p and * 21.22), extended CP
When using extended CP and subframe structure type 1 or 2, the first symbol of the CDM group
When using extended CP and subframe structure type 1 or 2, the second symbol of the CDM group
When using normal CP and subframe structure type 2, the second symbol of the CDM group
0, / = / '/ = {
1, / ^ / 'pe {15,17,19,21} ^W l ”- {/' [(-1) pe {16,18,20,22} k'is a frequency domain location of the first port antenna of CSI-RS, Γ is a location of
31/45 initial time domain of the first CSIRS antenna port of the CSI-RS and the eNB can inform the UE of the parameter (k ', 1') through an explicit signaling; and the first CSI-RS sequence ^{r (m)} is r (m) = - ^ = (l-2-c (2m)) + -2-c (2m +])), m = 0.11. .., V ^ ^{x DL} -1.
In another application example, the first sequence
IN ™ ^x ' ^dl -N% I of CSI-RS r (m) is cut according to i' = i + ----------- 4 i = 0.1, ..., - 1 to obtain the second CSI-RS sequence r _Zn (z ') in the time interval n _s of the OFDM / symbol;
the second CSI-RS sequence r, (z ') is mapped to í, n _s the subcarrier k of the OFDM symbol / of the csi-rsp antenna port, a _k ^p _t = w _v. -r _ln {i '), on what,
-0 / 7 and (15.16}, normal CP
-6 p and {1Ί, 18}, normal CP
-1 p and (19.20}, normal CP
-7 p e} 21.22}, normal CP
-0 p e (15.16}, CP extended
-3 p and (17.18}, CP extended
-6 p e (19.20}, CP extended
-9 p and ·} 21.22}, CP extended
J when using normal CP, the CSIRS configuration index is 0-19 when using normal CP, the CSI configuration index * ^{- 1 1} 'RS is 20-31 when using extended CP, the / CSI- configuration index RS is 0-27 X k'is the frequency domain location of the first CSI-RS antenna port, Γ is the initial time domain location of the CSI-RS first CSIRS antenna port and eNB can report the parameter UE (k ', T)
32/45 through explicit signage; and the first sequence of
CSI-RS r (m) is r (m) = - ^ = (l-2-c (2m)) + j -3 = (1-2- c (2m + l)),
In another example of CSI-RS application r (m) is cut to obtain the first sequence second sequence of
CSI-RS r _ln (T) in the time interval n _s of the OFDM / symbol;
the second CSI-RS sequence r, (z ') is mapped to í, n _s the subcarrier k of the OFDM symbol / of the antenna port of
CSI-RS p, the RE value that corresponds to the CSI-RS antenna port p and w, „is the orthogonal code factor;
where * tmax, DL »rDL ^ RB ~ ^ RB» rmax, DL »rDL ^ RB ~ ^ * RB
Z = 0 i = 0.1, ..., 2A ° ^l -1 ^{77 7} Kd (1 | -ik = k '+12 i mod i + 1; —3 | -6 i-9 pe {15, 16}. Normal CP P e / 17.18 (Normal CP pe (19.20 ,, Normal CP pe {21.22}, Normal CP pe {15.16}. Extended CP pe (17.18}, Extended CP PE {19.20}, CP extended p £ {21.22} CP extended fj »t when using normal CP, the configuration index of CSSI RS is 0 ~ 19
j. f / * '» ^{when using} normal CP, the configuration index of CSI / + / 2 / _R s is 20-31 | when using extended CP, the configuration index
II CSI-RS is 0-27
33/45 (° · ¹ ) 'ye {15,17,19,21} (-1) ^Z pe {16,18,20,22}'k'is the frequency domain location of the first antenna port of CSI-RS, Γ is the location of the initial time domain of the CSI-RS's first CSI5 RS antenna port and the eNB can inform the UE of the parameter through explicit signaling; and the first CSI-RS sequence r (m) is r (m) + jy = (l-2-c (2m + l)), m = 0.1, ..., / V _l '))) ^{x '01} -1 _#
In another application example, the first CSI-RS sequence r (m) is cut to obtain the second sequence of
CSI-RS r _ln (z ') in the time interval Z _are not OFDM symbol;
the second CSI-RS sequence r, (z ') is mapped to i, n _s the subcarrier k of the OFDM symbol I of the antenna port of
CSI-RS p, the RE value that corresponds to the antenna port of CSI-RS p and w is the orthogonal code factor;
where •, λ rmax, DL ¹ ™ rb iN ^ + N ^
JV ^{DL jv} RB
JV ^{DL jv} RB
Z '= 0 i = 0.1, ..., 2 ^ -1 f-0 (-6. I = k' + 12 (i mod) + <
i —3 (>
p) 15,16}. Normal CP p e) 17, 18}, normal CP p e {19.20 :, normal CP y) 21.22). Normal CP p and {15,16}, Extended CP p and {17,18}, Extended CP y (19.20), Extended CP p e) 21,22), Extended CP
34/45 when using normal CP, the CSIRS configuration index is 0-19 when using normal CP, the CSIRS configuration index is 20-31 when using extended CP, the CSIRS configuration index is 0-27 k ' is the frequency domain location of the first CSI-RS antenna port, Γ is the initial time domain location of the CSI-RS's first CSIRS antenna port and eNB can inform the UE of the parameter (k ', T) through explicit signage; and the first CSI-RS sequence r (m) is r (m) = -) = (! —2-c (2m)) + j -) = (1 —2-c (2m + l)),
Λ rma: ^m = ~ ^Ν κβ
Example two: the CSI-RS sequence is generated and mapped based on the subframe.
In the example, the CSI-RS sequence is generated and mapped in accordance with the following steps and the mapped CSI-RS sequence is shown in FIGURE 5 ~ FIGURE 8.
In step 1, a pseudo-random sequence initial value C _in it is generated.
In step 2, a pseudo-random sequence c (n) is generated.
In step 3, a QPSK modulation is performed in the pseudo-random sequence and the first CSI-RS r (m) sequence is obtained according to the maximum bandwidth A ^ b ^X ' ^dl of the system.
In step 4, a location index ¹ is calculated
N ^dl according to the real bandwidth ^RB of the system and the
35/45 first CSI-RS sequence is cut according to the location index * and the second CSI-RS sequence r (z ') is obtained in subframe ⁿ s
In step 5, the second CSI-RS r (z ') sequence is mapped to the subcarrier k of the OFDM / symbol of the CSI-RS antenna port p, aff = w _r · r _n (/'), in that, off is the RE value that corresponds to the CSI-RS antenna port p, w _r is the orthogonal code factor and _s is the time interval index.
Wherein, the pseudo-random sequence is also called a scramble code or a scramble code sequence and the initial pseudo-random sequence value is also called an initial scramble code value.
In step 1, in order to fully randomize the interference between multiple cells, the parameter required in calculating the initial value can be the time interval index and the cell ID. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
ς. »<./ ² 1+ ¹ ) · ( ² ' ^ν £ ^π + ι) · ² ' ^ί ^ = (L. / ² J + 1) '( ² <' + 1) ^ = (L. / ² J + i) '( ² <' + i) .2 '' + <^ = (L. / ² J + i) '( ² <' + i) .2 '+ <where, ns is the index time interval in a radio frame and N ^ ¹ is the cell's physical ID.
In addition, the CP verification is considered to be performed, the parameter required in the calculation of the initial value
36/45 can be the time slot index, cell ID and CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas:
ς. » = (L. / ² J +!) (2 <'+1) · 2 + 2 <' + N _cr ^ = (N ² ] + l) '( ^2N S' ^{+ i} ) ² '' ^{+ N} a ·
ς. » = (L./2J +1) (2JV- +1) 2 '“+ 2 <' + N _cr where: n _s is the time interval index in a
picture of radio, and N ^c ^ 'is O ID cell physical. When the subframe is the subframe in CP Normal, N _CP = 1 and when the subframe is the CP subframeFurthermore, the reduction Extended, N _CP = 0. interference measurement
between the CSI-RS antenna ports can be considered to be performed and, in an application example, the calculation of the initial scramble code value adopts any of the following formulas:
Cinit = (La / ² J + i) ( ^{2a /} Í +1) - (2- [_ ANTPORT / 2 J +1) 2 ⁹ + N ”qnit = (LA / 2 J +1) (2 Act +1 ) - (2- [_ ANTPORT / 4 J +1) 2 ⁹ + N ”
Anil = (L A / 2 J +1) (2AC +1) - (2- ^ ANTPORT / 2 J +1)
Cinit = (LA / 2 J +1) (2 A “ ^u +1) 2 ¹⁶ + [_ ANTPORT / 2 J qnit = (LA / 2 J +1) (2 A“ ^u +1) 2 ¹⁶ + [_ ANTPORT / 4 J where, n _s is the time slot index on a radio frame, N ^ ¹ is the cell's physical ID, ANTPORT is the parameter related to the CSI-RS antenna port index and its value can be 0 ~ 7.
In addition, the reduction of measurement interference between the CSI-RS antenna ports and the verification of the CP length can be considered to be performed and
37/45 in an application example, the calculation of the initial scramble code value adopts any of the following formulas:
Cinit = (L «without ² J + i) ( ^2N m ¹ +1) - (2- [_ ANTPORT / 2 J +1) 2 ¹⁰ + 2N ^c £ ^l + N _CP
Cjnit = (L « _s / 2 J +1) '(2 ^ ¹¹ +1) - (2- [_ ANTPORT / 4 J +1) 2 ¹⁰ + 2N ^c £ ^l + N _CP ^ = ([η, / 2] + ή · (2Ν ^ + ή · (2 · _ΑΝΤΡΟΚΤΙ4] + η · 2 + Ν „^. = 2“ - (L «, / 2J + 1) (2Aí“ + l) + 2 [AATPOÍT / 4j + / V „= 2“ (L «./ 2J +1) (2Λί“ +1) + 2- [ANTPORT / 2J + N „where, n _s is the time interval index on a radio frame , N ^ ¹ is the cell's physical ID, ANTPORT is the parameter related to the CSI-RS antenna port index and its value can be 0 ~ 7. When the subframe is Normal CP, N _CP = 1, when subframe is the Extended CP subframe, N _CP = 0
In addition, the CSI-RS antenna port check is considered to be performed and, in an application example, the calculation of the initial scrambling code value adopts any of the following formulas: Cinit = (L « _s / 2 J +1) (22V “ ^U +1) - (2- ANTPORTNUM +1) 2 ¹⁰ + 2N ^C ^ + NCP Cnit = (L« s / 2 J + 1) '(22V “ ^U +1) - (2- ANTPORTNUM + T) -2 + NCP Cnit = (L «s / 2 J +1) '(22V“ ^U +1) 2 ¹² + 8ΛΑ + ANCP + ANTPORTNUM Cinit = (L «s / 2 J +1)' ( 2 <'+1) 2 ¹² + 82V “ ^U + 2ANTPORTNUM + NCP Cnit = (L ⁿ s / ² J + 0 (2A“ ^U +1) 2 ³ + 2ANTPORTNUM + NCP Cnit = (1 ^ / 2) + 1 ) - (2 ^ ¹¹ +1) -2 ³ + AN CP + ANTPORTNUM where, n _s is the time interval index on a radio frame, N ^c ^ ¹ is the cell's physical ID, when the subframe is
CP
Normal
ANTPORTNUM is the parameter
38/45 related to a cell's CSI-RS antenna port number. For example, when the number of CSI-RS antenna ports is 1, the value of ANTPORTNUM is 2, when the number of CSI-RS antenna ports is 2, the value of ANTPORTNUM is 3, when the number of ports CSI-RS antenna port is 4, the ANTPORTNUM value is 4, when the number of CSIRS antenna ports is 8, the ANTPORTNUM value is 5, or when the number of CSI-RS antenna ports is 2, the ANTPORTNUM value is 0, when the number of CSI-RS antenna ports is 4, the ANTPORTNUM value is 1, when the number of CSIRS antenna ports is 8, the ANTPORTNUM value is 2, the value of ANTPORTNUM is reserved for 3 or ANTPORTNUM are other values related to the number of CSI-RS antenna ports in a cell.
Furthermore, if only the reduction in measurement interference between the CSI-RS antenna ports and the verification of the CSI-RS antenna port are considered to be performed and the CP verification is not considered, in an application example, the calculation of the initial scrambling code value adopts any of the following formulas: Ait = (L ⁿ s / ² J + i) '( ^{2Λ /} ιυ ¹ +1)' ( ² · ANTPORTNUM +1) 2 ⁹ + Mg Cinit = (K / 2 J + i) ( ^{2A /} ID ¹ +1) - (2- ANTPORTNUM +1) Cjnit = (LA / ² J + l) - (2Mg ^u +1) -2 ¹⁶ + ANTPORTNUM c _init = (L ^ra s / 2 J + 1) - (2C “+1) -4+ ANTPORTNUM Ait = (Lt / ² J +1) · (2Mg ^u +1) · 2 ¹¹ + 4Mg ^u + ANTPORTNUM where: n _s is the time slot index on a radio frame, Mg is the cell's physical ID, ANTPORTNUM is the parameter related to the cell's CSIRS antenna port number, when the number of CSI antenna ports
39/45
RS is 1, the ANTPORTNUM value is 2, when the number of CSI-RS antenna ports is 2, the ANTPORTNUM value is 3, when the number of CSI-RS antenna ports is 4, the value of ANTPORTNUM is 4, when the number of CSIRS antenna ports is 8, the value of ANTPORTNUM is 5, or when the number of CSI-RS antenna ports is 2, the value of ANTPORTNUM is 0, when the number of antenna of CSI-RS is 4, the value of ANTPORTNUM is 1, when the number of antenna ports of CSIRS is 8, the value of ANTPORTNUM is 2, the value of ANTPORTNUM is reserved for 3 or ANTPORTNUM are other values related to the number of a cell's CSI-RS antenna ports.
In addition, in order to interference the CSI-RS antenna ports located on two adjacent subcarriers of the same cell randomized and consider that the number of CSI-RS antenna ports of the cell can be blindly detected and also the length of the CP is required to be detected, the parameter required in calculating such an initial value can be the time slot index, the cell ID, the parameter related to the CSI-RS antenna port number, the parameter related to the port index antenna of CSI-RS and the CP length factor. In an application example, the calculation of the initial scramble code value adopts any of the following formulas: c _init = (| _n _s / 2j + 1) · (22V ““ + 1) - (2- ^ ANTPORT / 4 J +1) · 2 + 4ZV “+ ANTPORTNUM qnit = (L ^ s / 2 J +1) '( ² Δ / fo +1) - (2- [ANTPORT / 4 J +1) 4 + ANTPORTNUM qnit = ( L «/ 2 J +1) '(2A1“ ^U +1) - (2- [_ ANTPORT / 4 J +1) 2 ¹⁶ + ANTPORTNUM qnit = (L «/ 2 J +1)' (2 Δ /, jj +1) 2 ¹⁶ + 8 ^ ANTPORT / 2 J + ANTPORTNUM qnit = (L «/ 2 J +1) '(2 Δ /, jj +1) 2 ¹⁶ + 8 ^ ANTPORT / 4 J + ANTPORTNUM Cinit = ( Ls / ² J +!) · (201) ¹¹ +!) · 2 ¹⁶ + 2 ⁴ · LANTPORT / 2J + 2 ANTPORTNUM + N _CP
40/45
Cinit = (Ls / ² J + 0 · ( ² Mo + ή · 2 ¹⁶ + ²⁴ · L ANTPORT / 4J + 2 ANTPORTNUM + N _CP
Cinit = (H / ² J + i) ( ^22V ro ^U +1) 2 ¹⁶ + 8 ^ ANTPORT14 J + ANTPORTNUM where, n _s is the time interval index on a radio frame, N ^ ¹ is the ID of the cell, when ο subframe is the Normal CP, 7V _CI , = 1, when the subframe is the Extended CP subframe, N _CP = Q, ANTPORT is the parameter related to the CSI-RS antenna port index and its value can be 0 ~ 7. ANTPORTNUM is the parameter related to a cell's CSI-RS antenna port number. For example, when the number of CSI-RS antenna ports is 1, the value of ANTPORTNUM is 2, when the number of CSI-RS antenna ports is 2, the value of ANTPORTNUM is 3, when the number of ports CSI-RS antenna port is 4, the ANTPORTNUM value is 4, when the number of CSIRS antenna ports is 8, the ANTPORTNUM value is 5, or when the number of CSI-RS antenna ports is 2, the value of ANTPORTNUM is 0, when the number of antenna ports of CSI-RS is 4, the value of ANTPORTNUM is 1, when the number of antenna ports of CSIRS is 8, the value of ANTPORTNUM is 2, the value of ANTPORTNUM
is reserved for 3 or ANTPORTNUM are others values related to the number in antenna ports from CSI-RS of a cell.At stage 2, The pseudo-random sequence c (n) is generated in accordance with the following modes:
c (ri) = {x _i (n + N _c ) + x ₂ (n + N _c )) mod 2 χ / τι + 31) = (x ₁ (n + 3) + x ₁ (n)) mod2 x ₂ (n + 31) = (x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (n + l) + x ₂ (n)) mod2 where, ^ (0) = 1, ^ (n) = 0, n = 1,2, ..., 30, JV _c = 1600, x ₂ (n) = Ο, τϊ = 0,1,2, ..., 30 are produced according to the
41/45 initial value of pseudo-random sequence ^σ ™. = Σ ”ο · Α ^< + ² ' ^! and mod is modular arithmetic.
In step 3, the first CSI-RS r (m) sequence is generated in accordance with the following modes:
r (m) = -Á = (l-2-c (2m)) + j - ^ (l-2-c (2m + l)), m = 0.1, ..., 2 ^, // - ^1.1 -1 wmax.DL,,, where, ² 'rb θ the maximum system bandwidth, A = 110.
In steps 4 ~ 5, in an application example, the first sequence of
CSI-RS r (m) is cut according to i '= i + N, // ^x '^{r> l} - A // ', ^{v 7} Kt>Kt>' z = 0.1, ..., 22V _RB -1 to obtain the second sequence of CSI-RS r _n (z ') in the subframe the second sequence of CSI-RS r (z') is mapped to subcarrier k of the OFDM symbol / of the antenna port of CSI- RS / , ^{= w} r ' ^r n 9'), ^{in which} <Á θ ° value of RE that corresponds to the antenna port of CSI-RS p, and w _r is the orthogonal code factor;
where p and {15.16 ’, normal CP p and {17.18), normal CP p and {19.20}, normal CP and {21.22}. Normal CP p e {15,16 |, Extended CP p and {17,18}, Extended CP p and {19.20}, Extended CP p and {21,22}. Extended CP
42/45 to
RS to
RS to
RS use CP is 0'19 use CP is 20'31 use CP is 0'27 normal, the normal index, the extended index, the induce configuration configuration configuration configuration
CSICSIde CSIW, eg {15,17,19,21} (-1) ^Z pe {16,18,20,22} is the frequency domain location of the first CSI-RS antenna port, it is the domain location of initial time of the first CSIRS antenna port of the CSI-RS and the eNB can inform the UE of the parameter (k '/'), n,, ^v 'through the explicit signaling; and ^s and the time slot index on a radio frame.
A device for generating and mapping the sequence of
CSI-RS according to examples of the present invention comprises a generation unit and a mapping unit, in which:
the generation unit is configured to: generate a pseudo-random sequence according to an initial pseudo-random sequence value, perform a QPSK modulation on the pseudo-random sequence and obtain a first CSI-RS sequence according to the maximum bandwidth of a system ;
the mapping unit is configured to: cut the first CSI-RS sequence according to the actual bandwidth of the system, obtain a second CSI-RS sequence and map the second CSI-RS sequence to a frequency location of time of a CSI-RS antenna port.
The device generates and maps the CSI-RS sequence based on an OFDM symbol or a subframe, that is, the generation unit generates the pseudo-random sequence based on the OFDM symbol or the subframe and obtains the first CSI- LOL;
43/45 the mapping unit maps the second CSI-RS sequence to the CSI-RS antenna port time frequency location in the following ways:
when the CSI-RS sequence is mapped based on the OFDM symbol, the second CSI-RS sequences mapped to different OFDM symbols that are located in the same CDM group are produced from different first CSI-RS sequences;
when the CSI-RS sequence is mapped based on the subframe, the second CSI-RS sequences mapped to different OFDM symbols that are located in the same CDM group are produced from different parts of the same first CSI-RS sequence .
The specific deployment of the generation unit and mapping unit can refer to the descriptions in example one and example two, which will not be repeated here.
An eNB according to the examples of the present invention comprises a device for generating and mapping the CSI-RS sequence and the device comprises the generation unit and the mapping unit above.
A UE according to the examples of the present invention comprises a generation unit, a mapping acquisition unit, a receiving unit and a measurement unit, in which:
the generation unit is configured to: generate a pseudo-random sequence according to an initial pseudo-random sequence value, perform a QPSK modulation on the pseudo-random sequence and obtain a first CSI-RS sequence according to the maximum bandwidth of a system ;
the mapping acquisition unit is configured to: cut the first CSI-RS sequence according to the actual system bandwidth, obtain the second CSI-RS sequence used to be mapped to a location of
44/45 time frequency of a CSI-RS antenna port;
the receiving unit is configured to receive the CSI-RS sequence sent by an evolved Node B (eNB) at the time frequency location of the CSIRS antenna port;
the measurement unit calculates the CSI-RS sequence received by the receiving unit and the second CSI-RS sequence obtained by the mapping acquisition unit and performs the channel estimation and channel measurement.
The specific implantation of the generation unit and the mapping acquisition unit can refer to the descriptions in example one and example two, which will not be repeated here.
Those skilled in the art can understand that all or parts of the steps in the above method can be completed by a program that instructs the relevant hardware and the program can be stored in a computer-readable memory medium, such as a read-only memory, floppy disk. disk and optical floppy disk and so on. Alternatively, all or parts of the steps in the examples can also be implemented using one or multiple integrated circuits. Correspondingly, each module / unit in the examples above can be deployed using a form of hardware and can also be deployed using a form of software function module. The present invention is not limited to any specific form of the combination of hardware and software.
The above description are only the preferred examples of the present invention, which should not limit the present invention and there are several modifications and changes in the present invention for those skilled in the art. All modifications, equivalent substitutions and improvements and so on made within the spirit and principle of this
45/45
invention invention. must be within the scope of protection ofINDUSTRIAL APPLICABILITY gift 5 sequence Inin Comparationreference of with theCSI-RS existing technology, can be generated or obtained
respectively at the UE terminal and eNB terminal in accordance with the declared methods for generating and mapping the reference sequence according to the parameters known by the present invention, so that the calculated 10 CSI-RS sequence can be used to measure the channel at the EU terminal.

权利要求:
Claims (30)
[1]
1 . METHOD TO GENERATE AND MAP A CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSIRS), characterized by comprising:
generate a pseudo-random sequence in accordance with a pseudo-random sequence initial value, perform a Quadrature Phase Shift Switching (QPSK) modulation in the pseudo-random sequence and obtain a first CSI-RS sequence in accordance with the maximum system bandwidth ; and cut the first CSI-RS sequence according to an actual system bandwidth, obtain a second CSI-RS sequence and map the second CSI-RS sequence to a time frequency location of an antenna port. CSI-RS.
[2]
2. METHOD, according to claim 1, characterized in that, in the method, the first CSI-RS sequence is obtained and cut to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a subframe;
in the step of mapping the second CSIRS sequence to a time frequency location of a CSI-RS antenna port:
when the second CSI-RS sequence is mapped based on the OFDM symbol, the second CSI-RS sequences mapped on two OFDM symbols that are located in the same Multiple Code Division (CDM) group are produced from different first CSI-RS sequences;
when the second CSI-RS sequence is mapped based on the subframe, the second CSI-RS sequence mapped
2/29 in two OFDM symbols that are located in the same CDM group are produced from different parts of the same first CSI-RS sequence.
[3]
3. METHOD, according to claim 2, characterized in that, in the method, the first CSI-RS sequence is obtained and cut to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on OFDM symbol;
the method further comprises: obtaining the initial value of pseudo-random sequence C _init according to a time interval index, an OFDM symbol index in a time interval and a cell identity (ID), or obtaining the initial value of pseudo-random sequence C _init in accordance with one or more of the three parameters of a parameter related to the CSI-RS antenna port number, a parameter related to the CSIRS antenna port index and a Cyclic Prefix length factor (CP ) and the time slot index, the OFDM symbol index in a time slot, and the cell ID.
[4]
4. METHOD, according to claim 3, characterized in that, the initial value of pseudo-random sequence c _init can be one of the following values:
ς. „= 2’ (7 («, +1) +1 +1) (2 N ^ · +1) + N’ £ ·;
= 2 '· (7 · ( _π , + 1) + / + 1) (2.jv ;; + i);
Ç,",. = ( ⁷ («. +1) + / + 1) (2 / V +1);
<+,!, = 2 “O («. +1) + / + 1) (1 · <+1) + 2-Wg + N _cf ;
2'". (7. („, + 1) + / + 1). (2 · <'+ l) + W„;
^c inii = 2 (7. (n, +1) + / + 1) (2./Vg ^i! +1) + JV _CP ;
3/29 c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N% “+1) - (2- [ANTPORT / 4J +1) + Ν ^“; cinit = 2 ⁹ (7 (ns +1) +1 +1) (2 N ”+1) - (2- [ANTPORT / 2J +1) + N”; c _init = (7 - (n _s + 1) + / + 1) - (2-% ¾ +1) - (2- [ANTPORT / 4] + T);
c _init = (7 - (n _s + 1) + / + 1) - (2-% ¾ +1) - (2- [ANTPORT / 2] + T);
c _init = 4- (7 (n _s +1) + / + 1) - (2-% ¾ +1) + [ANTPORT / 2];
c _init = 2 (7 (n _s +1) +1 +1) (2% _/ ' ₎ ^// +1) + [ANTPORT / 4J;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ”+1) + [ANTPORT / 2 J;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ”+1) + [ANTPORT / 4 J;
c _init = 2 ¹⁰ (7 (n _s +1) + / + 1) - (2-% ¾ +1) + [ANTPORT / 2];
c _init = 2 ¹⁰ - (7- (n _s +1) + / + 1) - (2-% ¾ +1) + [ANTPORT / 4];
c _init = 2 ¹⁰ (7 (n _s +1) + / + 1) - (2-% ¾ +1) + [ANTPORT / 2];
c _init = 2 ¹⁰ (7 - (n _s +1) + / + 1) - (2-% ¾ +1) + 2-% ¾ + [ANTPORT / 4];
c _init = 2 ¹¹ - (7- (n _s +1) + / + 1) - (2-% ¾ +1) + 4-% ¾ + [ANTPORT / 2];
c _init = 2 ¹⁰ · (7 ·% +1) + Z +1) · (2 ·% 5 +1) · (2 · [ANTPORT / 4j +1) + 2N ^c I ^and D ⁿ + NCP; qnit = 2 ¹⁰ · (7 ·% +1) + Z +1) · (2 ·% 5 +1) · (2 · [ANTPORT / 2j +1) + 2% ¾ + NCP; c _init = 2 (7 (n _s +1) +1 +1) (2% _/ ' ₎ ^// +1) - (2- [ANTPORT / 4J +1) + N _CP ; c _init = 8- (7 - (/ 7 _s +1) + / + 1) - (2-% ¾ + l) + 2- [ANTPORT / 2] + N _CP ;
c _init = 4 (7 (n _s +1) +1 +1) (2% _/ ' ₎ ^// +1) + 2- [ANTPORT / 4 J + N _CP ;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2%> +1) + 2- [ANTPORT / 2J + N _CP ;
c _init = 2 ⁹ (7 (/ 7s +1) + / +1) (2% 5 ^ZZ +1) + 2 [ANTPORT / 4j + NCP;
c _init = 2 ¹⁰ (7 (ns +1) +1 +1) (2%> +1) + 2- [ANTPORT / 4J + NCP; c.nit = 2 ¹⁰ (7 (ns +1) +1 +1) (2%> +1) + 2- [ANTPORT / 2J + N _CP ;
_c . _nit = 2 ⁹ (7 (/ 7 _s +1) + / +1) (2% f +1) (2 ANTPORTNUM +1) +%>;
4/29 c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 +1) (2 ANTPORTNUM +1);
c _init = 2 ¹¹ (7 (n _s +1) +1 +1) (2 N% ¹ +1) + 4Λ ^ ^ΖΖ + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N% ¹ +1) + ANTPORTNUM;
c _init = 4 (7 (n _s +1) +1 +1) (2 N ”+1) + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^c £ ^l +1) (2 ANTPORTNUM +1) + N „;
c _init = 2 ¹¹ (7 (n _s +1) +1 +1) (2 N% ¹ +1) + 4Λ ^ ^ΖΖ + ANTPORTNUM;
c _init = 2 ¹² (7 (ns +1) +1 +1) (2 N% ¹ +1) + 8N% ¹ + 4NCP + ANTPORTNUM;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ^ ¹ +1) + 4NCP + ANTPORTNUM;
c _init = 8 (7 (n _s +1) +1 +1) (2 N ”+1) + 4N _CP + ANTPORTNUM;
c _init = 2 ¹² (7 (ns +1) +1 +1) (2 N% ¹ +1) + 8N% ¹ + 2ANTPORTNUM + NCP;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ^ ¹ +1) + 2ANTPORTNUM + NCP;
c _init = 8 (7 (n _s +1) +1 +1) (2 +1) + 2ANTPORTNUM + N _CP ;
_{C] lit} = 2 ¹¹ - (7-¼ +1) + / + 1) - (2-N% + 1) (2- [ANTPORT / 4] + 1) + 4N ^ '+ ANTPORTNUM;
c _init = 2 ⁹ - (7-¼ +1) + / + 1) - (2-N% '+ 1) (2- [ANTPORT / 4 [+ 1) + ANTPORTNUM;
c _init = 4- (7 - (^ +1) + / + 1) - (2-N ^ '+ 1) (2- [ANTPORT / 4] + 1) + ANTPORTNUM;
c _init = 2 ¹⁰ - (7-¼ +1) + / + 1) - (2-N „+1) +8 [ANTPORT / 4] + ANTPORTNUM;
c _init = 2 ¹⁰ · (7 · (n _s +1) +1 +1) · (2 · N% ¹ +1) + 8- [ANTPORT12J + ANTPORTNUM;
_{C] rit} = 2 ⁹ - (7¼ +1) + / + 1) - (2-¼ + l) (2- [ANIPORT / 4] + l) + 8N ^ + 4N _rp + A TPORINUM;
c _iA = 2 ⁹ - (1- (n _s +1) + / + 1) - (2-N ^ + 1) (2- [ANTPORT / 4] + 1) + 4N _CP + ANTPORTNUM;
c _init = 2 ¹² - (7¼ +1) + / + 1) · (2 · ΛΑ + l) (2- [ANTPORT / 4] + l) + 8N% + 2ANTPORTNUM + N _CP ;
c _fait = 2 ⁹ · (7 · (n +1) +1 +1) · (2 · N ^C _IP +1) (2 · [_ANTPORT / 4J +1) + 2ANTPORTNUM + N _cp ;
c _init = 8 · (7 · (n _s +1) +1 +1) · (2 · N ^ ¹ +1) (2 · [ANTPORT / 4J +1) + 2ANTPORTNUM + N _CP ;
_{C] nit} = 2 ¹⁰ - (T- (ns + 1) + 1 + 1) - (2-N ^c ^ '+ 1) + 8- [ANTPORT / 2] + ANTPORTNUM + NCP;
[5]
5/29 where, n _s is the time slot index on a radio frame, / is an OFDM index on a time slot, N ^c ^ ¹ is the cell ID, and N _CP is the Cyclic Prefix length (CP) of a subframe, when the subframe is a normal CP subframe, N _CP = 1, when the subframe is an extended CP subframe, N _CP = 0; ANTPORT is the parameter related to the CSI-RS antenna port index and ANTPORTNUM is the parameter related to the cell's CSI-RS antenna port number.
5. METHOD, according to claim 2, characterized in that, in the method, the first CSI-RS sequence is obtained and cut to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the subframe;
the method additionally comprises:
obtain the initial value of pseudo-random sequence C _init in accordance with a time interval index and cell identity (ID), or obtain the initial value of pseudo-random sequence C _init in accordance with one or more of the three parameters of a parameter related to the CSI-RS antenna port number, a parameter related to the CSIRS antenna port index and a Cyclic Prefix length (CP) factor and the time slot index and cell ID.
[6]
6. METHOD, according to claim 5, characterized in that, the initial value of pseudo-random sequence c _init can be one of the following values:
ς. » = (L. / ² J + ¹ ) ( ^2Ar £ ⁿ + i) · ² '
6/29 = -..., = (L./2j + 1) (2C + ¹ );
= -..., = (L./2j + l) (2 <+1) · 2 “+ <'_; = -..., = (L./2j + l) (2 <+1) · 2 '+ <';
ς .., = (L./2J +1) '(2 <+1) 2 “+ 2 <' + N _cr :
^ .. HL'Ú2j ^) · (2 <'+ 1) 2 “+ JV _C ,;
ς .., = (L./2J +1) (2C +1) 2 “+ 2 <'+ N _cr :
ct = (Ln / ² J + i) ( ^2A C +1) - (2- L ANTPORT / 2 J +1) 2 ⁹ + N ^c £ ^l ;
ct = (Ln / ² J + 0 ( ^2A C +1) - (2- L ANTPORT / 4 J +1) 2 ⁹ + N ^c £ ^l ;
= (h / ² J + 1) - (2AC +1) - (2 ANTPORT / 2] + i);
ct = (h / 2j + l) - (2 <'+1) -2 ¹⁶ + [ANTPORT / 2];
ct = (h / 2j + l) - (2 <'+1) -2 ¹⁶ + [ANTPORT / 4];
ct = (Ln / ² J +1) ( ² A / g +1) - (2- [_ANTPORT / 2J +1) 2 ¹⁰ + 2N ”+ N _CP ;
ct = (Ln / ² J +1) ( ² A / g +1) - (2- [_ANTPORT / 4J +1) 2 ¹⁰ + 2N ”+ N _CP ;
= (L «, / 2j + l) (2 / V“ + l) - (2- [ANTPORTI4] + D-2 + N „, = 2“ (L «, / 2 J +1) (2 <' +1) + 2 L ANTPORT 14 J + N „, = 2“ (L «, / 2 J +1) (2 <'+1) + 2 L ANTPORT 12 J + N„, ct = (L ⁿ s / ² J +1) ( ² A / g +1) - (2- ANTPORTNUM +1) 2 ¹⁰ + 2N ^C ^ + N _CP ;
ct = (Ln / ² J +1) ( ² A / g +1) - (2- ANTPORTNUM +1) 2 + N _CP ;
ct = (Ln / ² J +1) ( ² A / g +1) 2 ¹² + 8A / g ^u + 4N _CP + ANTPORTNUM;
ct = (Ln / ² J +1) ( ² A / g +1) 2 ¹² + 8Ag ¹¹ + 2ANTPORTNUM + N _CP ;
ct = (Ln / ² J +1) (2Ag ^u +1) 2 ³ + 2ANTPORTNUM + N _CP ;
ct = (Ln / ² J +1) (2Ag ^u +1) -2 ³ + 4N _CP + ANTPORTNUM;
qnit = (Ln / ² J +1) ( ² A / g +1) - (2- ANTPORTNUM +1) 2 ⁹ + N ';
[7]
7/29
Cinit = (LA / 2 J +1) (2A “ ^U +1) - (2- ANTPORTNUM +1);
qnit = (L ⁿ s / ² J + ¹ ) '( ² ^ ¹¹ +1) -2 ¹⁶ + ANTPORTNUM;
qnit = (L «s / ² J +1) '(2A“ ^U +1) -4 + ANTPORTNUM;
qnit = (L «without ² J +1) '(2A“ ^U +1) 2 ¹¹ + 4Λ / g + ANTPORTNUM;
_init = c (| _s _n / 2 J + 1) · (2A / g ^and "+1) - (2 - [_ ANTPORT / 4J +1) · 2 ¹¹ + 4Ύ" + ANTPORTNUM;
Cinit = (L ^{/ 7} s / 2j + l) '(2Ag ¹¹ +1) · (2 · ^ Α / νΓΡΟ / Γ14j + l) -4 + ANTPORTNUM;
c _init = (La / 2J +1) · (2 / Vg ¹¹ + 1) - (2- LANTPORT / 4J +1) · 2 ¹⁶ + ANTPORTNUM;
Cinit = (La / 2J +1) (2 / Vg ¹¹ +1) 2 ¹⁶ + 8 ^ ANTPORT12J + ANTPORTNUM;
qnit = (La / 2J +1) '(2 / Vg ¹¹ +1) 2 ¹⁶ + 8 ^ ANTPORT14J + ANTPORTNUM;
Cinit = (La / ² J + i) · (2 / Vro ¹ + ¹ ) · 2 ¹⁶ + 2 ⁴ - [_ ANTPORT / 2j + 2 ANTPORTNUM + N _CP ;
^c init = (La / 2J +1) - (2 Λ / g +1) - 2 ¹⁶ + 2 ⁴ | _ANTPORT / 4j + 2 ANTPORTNUM + N _CP ;
where, n _s is the time slot index on a radio frame, N is the cell ID, N _CP is the CP length factor of a subframe, when the subframe is a normal CP subframe, N _CP = 1, when the subframe is an extended CP subframe, N _CP = 0, ANTPORT is the parameter related to the CSI-RS antenna port index and ANTPORTNUM £ _the parameter related to the CSI-RS antenna port number of the cell.
7. METHOD, according to claim 2, characterized in that, in the method, the first CSI-RS sequence is obtained and cut to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on the OFDM symbol;
in the step of generating the pseudo-random sequence in accordance with the initial value of the pseudo-random sequence and performing QPSK modulation in the pseudo-random sequence
[8]
8/29 to obtain the first CSI-RS sequence, the pseudo-random sequence c (zz) can be generated in accordance with the following modes:
c (n) = (x ^ n + N _c ) + x ₂ (n + 2V _c )) mod 2 x _l (n + 31) - (xgzí + 3) + a, (/ 7)) mod 2 x ₂ (n + 31) - {x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (zz +1) + x ₂ (z7)) mod 2 where, ^ (0) = 1, ^ (^) = 0, ^ = 1,2, ..., 30, JV _c = 1600, x ₂ (n), n = 0,1,2,
30 are produced in accordance with the initial pseudo-random sequence value
Anit ~ 0 (ff) ‘2 and mod is modular arithmetic;
and the first CSI-RS r (m) sequence can be generated in accordance with the following modes:
r (m) - ~ 2 ’c (2zn)) + j —j = (1 - 2 · c (2m +1)), m - 0.1, ..., at max, DL ^7V rb ^-1 orr (m) = - ^ = (1-2 · c (2m)) + j - ^ = (l-2-c (2m + l)), m = 1 * r max, DL 2 ^ω3 -κι-max, DL 2 ^RB-1 at max. DL _z _ where, 2V _RB and the width maximum bandwidth system, jV ^ / ' ^dl = 110. 8. METHOD, according to claim 7,
characterized in that, the step of cutting the first sequence of CSI-RS in accordance with the real bandwidth of the system comprises: calculating a location index z 'in accordance with the real bandwidth N _PP of the system and cutting the first sequence of CSI-RS r (m) in accordance with the location index z 'to obtain the second sequence of CSI-RS r _Zn (z'j of the OFDM symbol / in the time interval
[9]
9/29 the step of mapping the second CSI-RS sequence to the CSI-RS antenna port time frequency location comprises:
map the second CSI-RS sequence r, (z ') to an i, n _s
5 subcarrier k of the OFDM I symbol of the CSI-RS antenna port p through = w _r , -r _ln (i '), where aff is a value of the Resource Element (RE) that corresponds to the port of antenna
CSI-RS p, and is an orthogonal code factor.
9. METHOD, according to claim 8, characterized in that,
I n ™ ^x ' ^dl -n% I the location index can be ι = zH --------, i = 0.1, ..., - i;
in the step of mapping the second CSI-RS sequence r _ln (z ') to the subcarrier k of the OFDM symbol / of the CSI-RS antenna port p:
j · -0 c} 15.16}, normal CP j -6 pe {17.18}, normal CP j - 1 p ε | 1 9.20}, normal CP,. 1-7 pe> 21.223.CP normal k = Ã '+ 12z + <J ^J | -0 / 7 e (15,161, extended CP l -3 · p and 117,18}, extended CP j -6 pep 9.20}, extended CP [-9 pe {21.22}, extended CP when using extended CP and the type of subframe structure 1 or 2, the first symbol of the CDM group when using the extended PLC and type of subframe structure 1 or 2, the second symbol of the CDM group when using the normal PLC and the type of structure of the CDM subframe 2, the second symbol of the CDM group
[10]
10/29
Ο, Ζ = Z 'ζ ^π = {
Ι, Ζ ^ Ζ '

[11]
11/29 where, k 'is a frequency domain location of the first CSI-RS antenna port, Γ is an initial time domain location of the first CSI-RS antenna port and the first CSI- RS r (m) is _r ( _m ) = - L (l-2-c (2m)) + j - ^ (l-2-c (2m + l)), m = 0, l, ..., <g ' ^DL -1.
11. METHOD according to claim 8, characterized in that the location index can be * rmax, DL _ * rDL ^ ^V RB ~ ^ ^V RB * rmax, DL _ * rDL
I ^ ^V RB ~ ^ ^V RB
Z '= 0
Z '= l
Z = 0.1, ..., 2M ° -l; ⁷⁷ Kd ⁷ 'in the step of mapping the second CSI-RS sequence r (/) for subcarrier k of an OFDM symbol Z t door, _are not CSI-RS antenna p,
-0 p and {15.16}, normal CP
-6 pe {17.18}, normal CP
-1 p g; 19.20}, normal CP
-7 p € 121.22}, normal CP —0 pe {15.16}, extended CP -3 pe (17.18}, extended CP -6 pe (19.20 ;, extended CP -9 pe {21, 22}, CP extended
C 'when using normal CP, the CSIRS configuration index is 019!, A »! when using normal CP, the CSI 'RS configuration index is 20-31 | when using extended CP, the CSIZ 'RS configuration index is 0-27 = {0.1}

[12]
12/29 frequency of the first CSI-RS antenna port, l is an initial time domain location of the first CSI-RS antenna port and the first CSI-RS sequence r (m) is _r ( _m ) = -L (i-2. _C (2m)) + jy = (l-2-c (2m + l)), m = 0.1, ..., <^ ' ^DL -1.
12. METHOD, according to claim 8, characterized in that, the location index is in the step of mapping the second sequence of CSI-RS r, (z ') to the subcarrier k of the OFDM / gate symbol , n _s CSI-RS antenna p,; -0 P t {15, 1 6}, normal CP; -6 pe {17,18}, normal CP | -1 pc {19.20}, normal CP,, , ....., I ^-7 pe (21,22), normal CP, .fc = .C + 12hmodA + t) + <,
-; -0 p and {1 , 1 &}. Extended CP i-3 pe (17.18), extended CP; -6 p e (19.20}, extended CP i-9 pe (21.22} .CP extended when using normal CP, the CSI! RS configuration index is 0-19
J _ J! ’When using normal CP, the CSI ~ RS configuration index is 20-31 | nt when using extended CP, the CSIH RS configuration index is 0-27 = (0.1)

[13]
13/29 r (m) = -j = (l - 2 -c (2m)) + - 2-c (2m + l)), m =
13. METHOD, according to the location of the initial time domain of the first antenna port of CSI-RS and the first sequence of CSI-RS r (m) is
1 Ί Γ 3 yymax, DL yymax, DL
2 RB '' 2 RB to claim 2, characterized in that, in the method, the first CSI-RS sequence is generated and cut to obtain the second CSI-RS sequence and map the second CSI-RS sequence based on subframe;
in the step of generating the pseudo-random sequence in accordance with the initial value of the pseudo-random sequence and performing QPSK modulation in the pseudo-random sequence to obtain the first CSI-RS sequence, the pseudo-random sequence c (n) can be generated according to the following modes :
c (ri) = (x _{ (n + N _c ) + x ₂ (n + N _c )) mod2 (n + 31) = (n + 3) + Xj (n)) mod 2 x ₂ (/ z + 31) - (x ₂ (/ z + 3) + x ₂ (zz + 2) + x ₂ (zz + 1) + x ₂ (zz)) mod2 where, x _z (0) = 1, χ _γ ( η) = 0, n = 1,2, ..., 30, 2V _C = 16OO, x ₂ (n), n - 0,1,2, ..., 30 are produced in accordance with the initial value of pseudo-random sequence
Knit ~ ‘r the mod is modular arithmetic; and the first CSI-RS r (m) sequence can be generated in accordance with the following modes:
r (zn) = - = - (1-2 · c (2zn)) + j ^ (l-2-c (2m + l)), m = 0.1, ..., 2AO ^DL -1;
V2 V2
Aimax, DL,,, where, zv _RB and the maximum system bandwidth, = 110.
[14]
14. METHOD, according to claim 13, characterized in that, the step of cutting the first sequence of CSI-RS in
14/29 compliance with the actual bandwidth of the system comprises:
calculate a location index z 'according to the actual bandwidth of the N _PP system and cut the first sequence of CSI-RS r (rri) according to the location index z' to obtain the second sequence n of CSI- RS r (i) in the subframe -;
| _ 2 The step of mapping the second CSI-RS sequence to the CSI-RS antenna port time frequency location comprises:
mapping the second CSI-RS sequence r ⁽ⁿ s zj for a subcarrier k of OFDM symbol / CSI-RS antenna port p via a = ^w r ^r n _s 9 '');
where aff is a value of RE that corresponds to the antenna port of CSI-RS p, w _r is an orthogonal code factor and _s is a time interval index.
[15]
15. METHOD, according to claim 14, characterized in that, the location index is i '= i + N ” _B ^ax ' ^DL -, Z = 0,1,2N ^ -1;
in the step of mapping the second CSI-RS sequence r _n (zj for a subcarrier k of the OFDM symbol / of the antenna port of CSI-RS p,
15/29 k - k '+ 12 {i mod) +
-Ο pe {15.16}, normal CP P ^e ! 17. i 8). Normal CP P and {19.20}, normal CP p: {21.22}. Normal CP, eg {15,16}, extended CP by {17,18}, extended CP P and {19.20;. (/ P extended by {21,22} .CP extended ρ · when using CP RS is 0 ~ 19 '4- / 7 / ” ^when using CP ^! ' RS is 20'31 p ₍ when using CP
I RS is 0'27 normal, the normal index, the extended index, the CSI configuration index, CSI configuration, CSI configuration,

[16]
16. DEVICE TO GENERATE AND MAP A CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS), characterized by comprising the generation unit and the mapping unit, in which:
the generation unit is configured to: generate a pseudo-random sequence in accordance with a pseudo-random sequence initial value, perform a Quadrature Phase Shift Switching modulation (QPSK) in the pseudo-random sequence and obtain a first CSI-RS sequence accordingly with the maximum system bandwidth;
the mapping unit is configured to: cut the first CSI-RS sequence in accordance with a
16/29 actual system bandwidth, obtain a second CSI-RS stream and map the second CSI-RS stream to a time frequency location of a CSI-RS antenna port.
[17]
17. DEVICE, according to claim 16, characterized in that the generating unit is configured to generate the pseudo-random sequence and obtain the first CSI-RS sequence based on an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a subframe;
the mapping unit is configured to cut the first CSI-RS sequence to obtain the second CSI-RS sequence and map the second CSI-RS sequence to the CSIRS antenna port time frequency location as follows :
when the second CSI-RS sequence is mapped based on the OFDM symbol, the second CSI-RS sequences mapped to two OFDMs symbols that are located in the same CDM group are produced from different first CSI- LOL;
when the second CSI-RS sequence is mapped based on the subframe, the second CSI-RS sequences mapped to two OFDM symbols that are located in the same CDM group are produced from different parts of the same first CSI- LOL.
[18]
18. DEVICE, according to claim 17, characterized in that, the generation unit is configured to generate the pseudo-random sequence and obtain the first CSI-RS sequence based on the OFDM symbol;
the generation unit is additionally configured to:
obtain the initial value of pseudo-random sequence
17/29
C _init in accordance with a time interval index, an OFDM symbol index in a time interval and a cell identity (ID), or, obtain the pseudo-random sequence initial value
C _init in accordance with one or more of the three parameters of a parameter related to the CSI-RS antenna port number, a parameter related to the CSIRS antenna port index and a Cyclic Prefix length factor (CP), and the time slot index, the OFDM symbol index in a time slot, and the cell ID.
[19]
19. DEVICE, according to claim 18, characterized in that the initial value of pseudo-random sequence c _init can be one of the following values:
fo _it = 2 ⁹ - (7 - (/ 7 _s + l) + Z + l) - (2- < ^z + l) + <^z;
E _nit = 2 ⁹ (7 (n _s +1) +1 +1) · (2 · N% ¹ +1);
c _init = (7 (^ +1) + Z + 1) - (2-7V ^ ^zz +1);
c _mit = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N “ ^zz +1) + 2- N + NCP;
fo _it = 2 ¹⁰ - (7 - (/ 7s + l) + Z + l) - (2- < ^z + l) + 2VCP;
^c mit = 2- (7 (ns +1) + Z + 1) - (2-N ^ ¹¹ +1) + NCP;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N '”+1) - (2- ^ ANTPORT / 4J +1) + N'”;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N '”+1) - (2- [ANTPORT / 2J +1) + N'”;
c _init = (l- (n _s +1) + / + 1) - (2-N ”+1) - (2 ANTPORT / 4 + ϊ);
c _init = (l- (n _s +1) + / + 1) - (2- +1) - (2 - _ ANTPORT / 2] + ΐ);
c _init = 4. (7.¼ + l) + / + l) - (2-2V “ ^zz +1) + [ANTPORT / 2];
c _init = 2 (7 (n _s +1) + / +1) (2 N '”+1) + [ANTPORT / 4J;
18/29 c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N% "+1) + [ANTPORT / 2 J;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 Ν% ¹ +1) + [ANTPORT / 4 J;
c _init = 2 ¹⁰ (7 (n _s +1) + / + 1) - (2 -N ”+1) + [ANTPORT / 2 ;
c _init = 2 ¹⁰ - (7- (n _s +1) + / + 1) - (2- N ^ ¹¹ +1) + [ANTPORT / 4];
c _init = 2 ¹⁰ (7 (n _s +1) + / + 1) - (2 -N ”+1) + [ANTPORT / 2 ^;
c _init = 2 ¹⁰ (7 - (n _s +1) + / + 1) - (2- N% +1) + 2- N% + [ANTPORT / 4];
c _init = 2 ¹¹ - (7- (n _s +1) + / + 1) - (2 -N ”+1) + 4- N” + [ANTPORT / 2 ;
c _init = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · +1) - (2- [ANTPORT / 4j +1) + 2N ^C £ + NCP;
Cut = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · +1) - (2- [ANTPORT / 2j +1) + 2N ^C £ + NCP;
c _init = 2 (7 (n _s +1) +1 +1) (2 N ^c £ +1) - (2- [ANTPORT / 4J +1) + N _CP ;
c _init = 8- (7 - (/ 7 _s +1) + / + 1) - (2-N% + 1) + 2- [ANTPORT / 2] + N _CP ;
c _init = 4 (7 (n _s +1) +1 +1) (2 N ^c £ ^l +1) + 2- [ANTPORT / 4 J + N _CP ;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ^c £ ¹ +1) + 2- [ANTPORT / 2J + NCP;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N [+1) + 2 [ANTPORT / 4J + N _CP ;
c _init = 2 ¹⁰ (7 (n _s +1) +1 +1) (2 N [+1) + 2 [_ANTPORT / 4J + N _CP ;
c _init = 2 ¹⁰ (7 (n _s +1) +1 +1) (2 N [+1) + 2 [_ANTPORT / 2J + N _CP ;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^ +1) (2 ANTPORTNUM +1) + N „;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^ +1) (2 ANTPORTNUM +1);
c _init = 2 ¹¹ (7 (n _s +1) +1 +1) (2 N ^c £ +1) + 4N ^ ¹ + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + ANTPORTNUM;
c _init = 4 (7 (n _s +1) +1 +1) (2 N ”+1) + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^ +1) (2 ANTPORTNUM +1) + N „;
c _init = 2 ¹¹ (7- (n _s +1) + / + 1) - (2 N ^c ^ '+1) + 4N ^C ^ + ANTPORTNUM;
19/29 c _init = 2 ¹² (7 (ns +1) +1 +1) (2 N% ¹ +1) + 8N% ¹ + 4NCP + ANTPORTNUM;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N% ¹ +1) + 4NCP + ANTPORTNUM;
c _init = 8- (7 (n _s +1) + 1 + 1) - (2-N ^c £ ¹ + 1) + 4N _CP + ANTPORTNUM;
c _init = 2 ¹² (7 (ns +1) +1 +1) (2 N% ¹ +1) + 8N% '+ 2ANTPORTNUM + NCP;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ¹¹ +1) + 2ANTPORTNUM + NCP;
c _init = 8 (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + 2ANTPORTNUM + N _CP ;
_{C] lit} = 2 ¹¹ - (7- (n +1) + 1 + 1) - (2-N% + 1) (2- [ANIPORT / 4] + 1) + 4N ^ + ANTPORTNUM;
c _init = 2 ⁹ - (7- (n +1) + / + 1) - (2-N% '+ 1) (2- [ANTPORT / 4] + T) + ANTPORTNUM;
q _mt = 4- (7 - (^ + 1) + / + 1) - (2- ^ + ) (2- ^ ANTPORT / 4 + V) + ANTPORTNUM;
c _imt = 2 ¹⁰ · (7 · (n +1) + 1 + 1) · (2 · N% ¹ +1) + 8 · [_ANTPORT / 4 J + ANTPORTNUM;
c _init = 2 ¹⁰ · (7 · (n _s +1) +1 +1) · (2 · N% ¹ +1) + 8- [ANTPORT 12 J + ANTPORTNUM;
_{C] rit} = 2 ⁹ - (7- (n _s +1) + / + 1) - (2- < ^z + 1) (2-LAV7PCKT / 4j + 1) + 8A ^ + 4N ^ + ANIPORINUM;
c _iA = 2 ⁹ - (7- (n _s +1) + / + 1) - (2- ^ + l) (2- [ANIPORT / 4] + l) + 4N _CP + ANTPORTNUM;
c _init = 2 ¹² - (7 - (/ ¾ +1) + / + 1) · (2-N% ¹ +1) (2 ·} ΑΛΤΡΟΛΤ / 4} +1) + 8 ^ “+ 2ANTPORTNUM + N _CP ;
_Cfait = 2 ⁹ · (7 · (n _s +1) +1 +1) · (2 · Nj _p +1) (2 · | _ANTPORT / 4J +1) + 2ANTPORTNUM + N _CP J c _init = 8 · ( 7 · (n _s +1) +1 +1) · (2 · N ^C _IP +1) (2 · | _ANTPORT / 4J + 1) + 2ANTPORTNUM + N _CP ;
_{C] nit} = 2 ¹⁰ - (7- (ns + l) + l + l) - (2-N ^c ^ + l) +8 - _ ANTPORT / 2] + ANTPORTNUM + NCP;
where, n _s is the time slot index on a radio frame, / is an OFDM index on a time slot, N ^ ¹ is the cell ID and N _CP is the Cyclic Prefix length factor ( CP) of a subframe, when the subframe is a normal CP subframe, N _(p = l, when the subframe is an extended CP subframe, N _CP = 0; ANTPORT is the parameter related to the CSI antenna port index -RS and ANTPORTNUM is the parameter related to the port number of
[20]
20/29 cell CSI-RS antenna.
20. DEVICE, according to claim 17, characterized in that the generation unit is configured to generate the pseudo-random sequence c (n) based on the OFDM symbol in accordance with the following modes:
c (n) = (x _Á (n + N _c ) + x ₂ (n + A _c )) mod 2 x ₁ (n + 31) = (a ', (/ 7 + 3) + a, (/ 7 )) mod 2 x ₂ (n + 31) = (x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (n +1) + x ₂ (/ i)) mod 2 where, ^ (0) = 1, ^ (/ 7) = 0, / 7 = 1,2, ..., 30, A /. = 1600, x ₂ (n), / 7 = 0,1,2, ..., 30 are produced in accordance with the initial value of pseudo-random sequence Unit ~ -M. (Ff) '2 and mod is modular arithmetic;
and the generation unit is configured to obtain the first CSI-RS r (m) sequence based on the OFDM symbol in accordance with the following modes:
r (m) = - ^ = (1-2-c (2m)) + / - ^ = (1-2 · c (2m + l)), m = 0, 1, ..., / ^ ^x ' ^DL —1 or
1 Ί Γ 3 a t max, DL -kt max, DL -i
2 ^V RB '···' 2 'rb ^{- 1} where, 2V ™ ^X ' ^DL is the maximum system bandwidth, AÇ / ' ¹ ' ¹ = 110.
[21]
21. DEVICE, according to claim 20, characterized in that the mapping unit is configured to obtain and map the second CSI-RS sequence based on the OFDM symbol in accordance with the following modes:
calculate a location index i 'in accordance with the real bandwidth N _PP of the system er (m) = - ^ = (1-2 · c (2m)) + j - ^ = (l-2-c (2m + l)), m =
21/29 cut the first sequence of CSI-RS r (m) in accordance with the location index z 'to obtain the second sequence of CSI-RS r _Zn (z') of the OFDM symbol l in time interval ⁿ _s ;
map the second CSI-RS sequence r, (z ') to an í, n _ç subcarrier k of the OFDM symbol l of the CSI-RS antenna port p through aff = w _r η _n (i), where a ^{ _k ^p [is a Resource Element (RE) value that corresponds to the CSI-RS antenna port p, and W) ,, is an orthogonal code factor.
[22]
22. DEVICE, according to claim 21 characterized in that the location index the mapping unit is configured to map the
15 second sequence of CSI-RS r, (z ') for subcarrier k of í, n _s OFDM symbol l of the antenna port of CSI-RS p in accordance with the following modes:
) -0 p and [15,161, normal CP | -6 p = -p 7.18}, normal CP | -1 p and p 9.20}, normal CP | -0 p and p 5.16} .CP extended | -3 p and {17.18}, extended CP i -6 p and {19.20}, extended CP | -9 p and {21.2 2}. Extended CP when using normal CP, the CSIRS configuration index is 019 when using normal CP, the CSIRS configuration index is 20-31 when using extended CP, the CSIRS configuration index is 0-27
22/29 / € {0.1}

[23]
23. EVOLVED NODE B (ENB), characterized by comprising a device for generating and mapping a Channel State Information Reference Signal sequence (CSI-RS) and the device comprising the generation unit and the mapping unit, as defined in any one of claims 16 to 22, wherein:
the generation unit is configured to: generate a pseudo-random sequence in accordance with a pseudo-random sequence initial value, perform a Quadrature Phase Shift (QPSK) modulation in the pseudo-random sequence and obtain a first CSI-RS sequence accordingly with the maximum system bandwidth;
the mapping unit is configured to: cut the first CSI-RS sequence in accordance with an actual system bandwidth, obtain a second CSI-RS sequence and map the second CSI-RS sequence to a frequency location of a CSI-RS antenna port.
[24]
24. USER EQUIPMENT (EU), characterized by comprising a generation unit, a mapping acquisition unit, a receiving unit and a measurement unit, in which:
23/29 the generation unit is configured to: generate a pseudo-random sequence in accordance with a pseudo-random sequence initial value, perform a Quadrature Phase Shift Switching (QPSK) modulation in the pseudo-random sequence, and obtain a first Signal sequence Channel State Information Reference (CSIRS) in accordance with the maximum system bandwidth;
the mapping acquisition unit is configured to: cut the first CSI-RS sequence in accordance with an actual system bandwidth, and obtain a second CSI-RS sequence configured to be mapped to a time frequency location a CSI-RS antenna port;
the receiving unit is configured to receive a CSI-RS sequence sent by an evolved Node B (eNB) at the time frequency location of the CSIRS antenna port;
the measurement unit is configured to calculate the CSI-RS sequence received by the receiving unit and the second CSI-RS sequence obtained by the mapping acquisition unit and perform a channel estimate and channel measurement.
[25]
25. UE, according to claim 24, characterized in that the generation unit is configured to generate the pseudo-random sequence and obtain the first CSI-RS sequence based on an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a subframe;
the mapping acquisition unit is configured to obtain the second CSI-RS sequence configured to be mapped to the time frequency location of the CSI-RS antenna port as follows:
24/29 when the second CSI-RS sequence is obtained based on the OFDM symbol, the second CSI-RS sequences mapped to two OFDM symbols that are located in the same group of CDM are produced from different first sequences CSI-RS;
when the second CSI-RS sequence is obtained based on the subframe, the second CSI-RS sequences mapped to two OFDM symbols that are located in the same CDM group are produced from different parts of the same first CSI- LOL.
[26]
26. UE, according to claim 25, characterized in that the generation unit is configured to generate the pseudo-random sequence and obtain the first CSI-RS sequence based on the OFDM symbol;
the generation unit is additionally configured to:
obtain the initial value of pseudo-random sequence
C _init in accordance with a time slot index, an OFDM index symbol in a time slot and a cell identity (ID), or, obtain the pseudo-random sequence initial value
C _init in accordance with one or more of the three parameters of a parameter related to the CSI-RS antenna port number, a parameter related to the CSIRS antenna port index and a Cyclic Prefix length (CP) factor and the time slot index, the OFDM index symbol in a time slot, and the cell ID.
[27]
27. UE according to claim 26, characterized in that the initial value of pseudo-random sequence c _init can be one of the following values:
25/29
A _nit = 2 ⁹ - (7 - (^ + 1) + Ζ + 1) · (2 · < ^ζ +1) + <^ζ;
^c in _it = 2 ⁹ - (7¼ +1) + / + 1). (2 -Ν ^ ¹ +1);
^c in _it = (7 '(A + 1) + / + 1) - (2-5¼ +1);
c _imt = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · N “ ^zz +1) + 2- 7V“ ^ZZ + NCP;
c _imt = 2 ¹⁰ - (7 - (ns +1) +1 +1) - (2 - < ^z +1) + NCP;
^c init = 2- (7 (ns +1) + I + 1) - (2-5 / g ^zz +1) + NCP;
c _init = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · 5¼ +1) - (2- [_ ANTPORT / 4 J +1) + N% '; cinit = 2 ⁹ · (7 · (ns +1) +1 +1) · (2 · N% “+1) - (2- [_ ANTPORT / 2 J +1) + N%“; c _init = (1- (n _s + 1) + / + 1) - (2-¼ + 1) - (2- ^ ANTPORT / 4] + V);
c _init = (7 - (/ i _s + 1) + / + 1) - (2-¼ + l) - (2 - _ ANTPORT / 2] + T);
c _init = 4- (7- (n _s +1) + / + 1) - (2-¼ +1) + ^ ANTPORT / 2];
c _init = 2 (7 (n _s + 1) + I + 1) (2 N% "+1) + ^ ANTPORT / 4J;
c _init = 2 ⁹ (7 (n _s + 1) + I +1) (2 N ”+1) + ^ ANTPORT / 2 J;
c _init = 2 ⁹ (7 (n _s + 1) + I +1) (2 N ”+1) + ^ ANTPORT / 4 J;
c _init = 2 ¹⁰ ¼¼ + 1) + 1 + 1) - (2-N% + 1) + ^ ANTPORT / 2];
c _init = 2 ¹⁰ (7 (n _s +1) + I + 1) - (2 N ”+ 1) + ^ ANTPORT / 4J;
c _init = 2 ¹⁰ ¼¼ +1) + 1 + 1) - (2-N% “+1) + ^ ANTPORT / 2];
c _init = 2 ¹⁰ ¼¼ +1) + 1+ 1) - (2-N% “+1) + 2-N ^ ¹¹ + _ANTPORT / 4]; c _init = 2 ¹¹ ¼¼ + 1) +1+ 1) - (2 N ^ ¹¹ + 1) + 4-N ^ ¹¹ + ^ ANTPORT / 2];
q _mt = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · Λ / g +1) - (2- [_ANTPORT / 4j +1) + 2¼ + NCP; cimt = 2 ¹⁰ · (7 · (ns +1) +1 +1) · (2 · A / g +1) - (2- [_ANTPORT / 2j +1) + 2N% ¹ + NCP; c.nit = 2 (7 (ns +1) +1 +1) (2 N ^c ^ “+1) - (2- ^ ANTPORT / 4J +1) + NCP;
_c . _nit = 8- (7 - (/ 7 _s +1) + 1 + 1) - (2-N% “+ 1) + 2- ^ ANTPORT / 2] + N _cp ;
26/29 c _init = 4 (7 (n _s +1) +1 +1) (2 N ^c £ ^l +1) + 2- ^ ANTPORT / 4 J + N _CP ;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ^c £ ¹ +1) + 2- ^ ANTPORT / 2J + NCP;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ”+1) + 2 ^ ANTPORT / 4J + N _CP ;
c _init = 2 ¹⁰ (7 (ns +1) +1 +1) (2 N ^ ¹ +1) + 2 [_ANTPORT / 4J + NCP;
c _init = 2 ¹⁰ (7 (ns +1) +1 +1) (2 N ^ ¹ +1) + 2 [_ANTPORT / 2J + NCP;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N% ¹ +1) - (2- ANTPORTNUM +1) + N% ¹ ;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^c £ ^l +1) (2 ANTPORTNUM +1);
c _init = 2 ¹¹ (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + 4N ^ ¹ + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N ^c £ +1) + ANTPORTNUM;
c _init = 4 (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + ANTPORTNUM;
c _init = 2 ⁹ (7 (n _s +1) +1 +1) (2 N% ¹ +1) - (2- ANTPORTNUM +1) + N% ¹ ;
c _init = 2 ¹¹ (7- (n _s +1) + / + 1) - (2-Ap + 1) + 4 N ^ ¹ + ANTPORTNUM;
c _init = 2 ¹² (7 (ns +1) +1 +1) (2 N ^c £ +1) + 8N ^ ¹ + 42VCP + ANTPORTNUM;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N% ¹ +1) + 42VCP + ANTPORTNUM;
c _init = 8- (7- (zi _s +1) + / + 1) - (2-Ap +1) + 42V _CP + ANTPORTNUM;
c _init = 2 ¹² - (7 - (^ + 1) + / + 1) - (2- N% ¹ +1) + 8N ^ ¹ + 2ANTPORTNUM + N _CP ;
c _init = 2 ⁹ (7 (ns +1) +1 +1) (2 N ^ ¹ +1) + 2ANTPORTNUM + NCP;
c _init = 8 (7 (n _s +1) +1 +1) (2 N ^ ¹ +1) + 2ANTPORTNUM + N _CP ;
_Cimt = 2 ¹¹ - (7 - (^ +1) + / + 1) - (2-N ^ + 1) (2 - [_ ANIPORT / 4] + 1) + 4N ^ + ANTPORTNUM;
c _init = 2 ⁹ - (7 - (^ +1) + 1 + 1) - (2-N ^ + 1) (2- [ANTPORT / 4 ^ + 1) + ANTPORTNUM;
c _iml ^ 4- (1- (n _s + l) + l + l) - (2-N ^ ^l + l) (2 - [_ ANTPORT / 4] + l) + ANTPORTNUM;
c _init = 2 ¹⁰ · (7 · (n _s +1) + 1 + 1) · (2 · N% ¹ +1) + 8 · [ANTPORT / 4J + ANTPORTNUM;
ς _ώ = 2 ¹⁰ - (7- (h +1) + / + 1) - (2-N% '+ 1) + 8- [ANTPORT / 2] + ANTPORTNUM;
27/29 _Cuit = 2 ⁹ - (7 - ^ + 1) + / + 1) - (2- ^ + 1) (2-LAM7rRT / 4j + 1) + 8A7 + AN _CP + ANIPORINUM;
_Ciiit = 2 ⁹ - (7- (7¾ +1) + / + 1) - (2- ^ + l) (2 - [_ ANIPORT / 4] + l) + 4N _CP + ANIPORINUM;
c _init = 2 ¹² - (7¼ +1) + / + 1) · (2-N% ¹ + l) (2- | _ / WTPO / TZ4j + l) + 87V “ ^s + 2ANTPORTNUM + N _cp ;
_Cfait = 2 ⁹ · (7 · (ns +1) + / +1) · (2 · 7V “+1) (2 · [ANTPORT / 4J +1) + 2ANTPORTNUM + NCP J cinit = 8 · (7 · ( zzs +1) + Z +1) · (2 · / V “+1) (2 · | _ANTPORT / 4J +1) + 2ANTPORTNUM + NCP; cMt = 2 ^W - (1- (ns + l) + l + l) - (2-N ^ '+ l) +8 - _ ANTPORT / 2] + ANrPOR7NUM + N _CP ;
where, n _s is the time slot index on a radio frame, / is an OFDM index on a time slot, N ^ ¹ is the cell ID, and N _CP is the Cyclic Prefix length factor (CP) of a subframe, when the subframe is a normal CP subframe, A _CP = 1, when the subframe is an extended CP subframe, N _CP = 0; ANTPORT is the parameter related to the CSI-RS antenna port index and ANTPORTNUM is the parameter related to the cell's CSI-RS antenna port number.
[28]
28. UE, according to claim 27, characterized in that the generation unit is configured to generate the pseudo-random sequence c (n) based on the OFDM symbol in accordance with the following modes:
c (tz) = (x] (7z + N _c ) + x ₂ (tz + iV _c )) mod 2 x _l (n + 31) = (xj / tz + 3) + x ₁ (7z)) mod 2 x ₂ (n + 31) - (x ₂ (n + 3) + x ₂ (tz + 2) + x ₂ (n +1) + x ₂ (zi)) mod 2 where, +, (0) = 1, x ₁ (n) = 0, n = 1,2, ..., 30, 2V _C = 16OO, x ₂ (n), / 7 = 0,1,2, ..., 30 are produced in compliance with the initial value of pseudo-random sequence Anít ~ 'and mod is modular arithmetic;
and
28/29 r (m) = - ^ = (l-2-c (2m)) + j - ^ = (l-2-c (2m + l)), m = the generation unit is configured to obtain the first sequence of CSI-RS r (m) based on the OFDM symbol in accordance with the following modes:
r (m) = - ^ = (1-2-c (2m)) + 2 · c (2m + l)), m = O, 1, ..., N ^ ' ^OL - 1 or 1 Ί Γ 3 λ t max, DL λ · max, DL -i “-'Vrb“ 7V _rb -1 where, Λ /// ' ¹ ' ¹ 'is the maximum system bandwidth, A ^ ^{X, DL} = 110 .
[29]
29. UE, according to claim 28, characterized in that the mapping acquisition unit is configured to obtain the second CSI-RS sequence based on the OFDM symbol in accordance with the following modes:
calculate a location index z 'in accordance with the actual bandwidth N _PP of the system and cut the first sequence of CSI-RS r (m) in accordance with the location index z' to obtain the second sequence of CSI-RS r _Zn (z'j of the OFDM symbol l over time ⁿ _s ί the mapping acquisition unit is additionally configured to: map the second CSI-RS sequence r _Zn (z ') to a subcarrier k of the OFDM l of the CSI-RS antenna port p via = w _v , η _n (i '), where aff is a Resource Element (RE) value that corresponds to the CSI-RS antenna port p, and is an orthogonal code factor.
[30]
30. EU according to claim 2, characterized in that
29/29 the location index is i ’= i iíTmã.x, DL A / DL
RB ~ RB J z = 0.1, ..., ^ - 1;
the mapping acquisition unit is configured to map the second CSI-RS sequence r, (z ') to í, n _s
5 subcarrier k of the OFDM symbol l of the CSI-RSp antenna port in accordance with the following modes:
| —0 pe {15.16} .CP normal | -6 pe {17.18}, normal CP
1-1 p and {19.20}, normal CP
1-7 pe {21,2 2! , Normal CP k = k '+ 12i + Á | -0 pe {15,16}, CP extended | -3 pe {17,18}, CP extended | -6 pe [19.20}, CP extended | —9 pe {21,22}, extended CP í ni when using normal CP, the CSIf RS configuration index is 0 ~ 19; n. i when using normal CP, the CSIl -l T · ^ J _RS configuration index _is 20 '31 | p, when using extended CP, the CSIC RS configuration index is 0 ~ 27 / € {0.1}

pe {15,17,19,21} pe {16,18,20,22} where, k 'is a frequency domain location of the first CSI-RS antenna port, Γ is a domain location of initial time of the first CSI-RS antenna port and the first CSI-RS sequence r (m) is r (zzí) = - ^ = (1-2 · c (2zn)) + j - ^ = (1- 2 -c (2zn + l)),
0 1 λ T max, DL 1, 1, ..., A _rr -I ^{7 7 7} Kd ·

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法律状态:
2020-03-10| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-04-28| B15K| Others concerning applications: alteration of classification|Free format text: A CLASSIFICACAO ANTERIOR ERA: H04L 1/18 Ipc: H04L 1/18 (2006.01), H04L 5/00 (2006.01), H04W 48/ |

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2020-04-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-10-13| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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2021-11-09| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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CN201010503819.1|2010-09-29|

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CN201010503819.1A|CN102437987B|2010-09-29|2010-09-29|The generation of channel state information reference signals sequence and mapping method and device|

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PCT/CN2011/000738|WO2012040992A1|2010-09-29|2011-04-26|Device and method for generating and mapping channel state information reference signal sequence|

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