LTE协议

3GPP TS 36.211 V9.1.0 (2010-03)

Technical Specification

3rd Generation Partnership Project;

Technical Specification Group Radio Access Network;

Evolved Universal Terrestrial Radio Access (E-UTRA);

Physical Channels and Modulation

(Release 9)

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented.

This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners' Publications Offices.

Keywords

UMTS, radio, layer 1

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Contents

Foreword (6)

1 Scope (7)

2References (7)

3Definitions, symbols and abbreviations (7)

3.1Symbols (7)

3.2Abbreviations (9)

4Frame structure (9)

4.1Frame structure type 1 (9)

4.2Frame structure type 2 (10)

5Uplink (11)

5.1Overview (11)

5.1.1Physical channels (11)

5.1.2Physical signals (11)

5.2Slot structure and physical resources (12)

5.2.1Resource grid (12)

5.2.2Resource elements (13)

5.2.3Resource blocks (13)

5.3Physical uplink shared channel (13)

5.3.1Scrambling (14)

5.3.2Modulation (14)

5.3.3Transform precoding (14)

5.3.4Mapping to physical resources (15)

5.4Physical uplink control channel (16)

5.4.1PUCCH formats 1, 1a and 1b (17)

5.4.2PUCCH formats 2, 2a and 2b (19)

5.4.3Mapping to physical resources (20)

5.5Reference signals (21)

5.5.1Generation of the reference signal sequence (21)

3N or larger (21)

5.5.1.1Base sequences of length RB sc

3N (22)

5.5.1.2Base sequences of length less than RB sc

5.5.1.3Group hopping (23)

5.5.1.4Sequence hopping (24)

5.5.2Demodulation reference signal (24)

5.5.2.1Demodulation reference signal for PUSCH (24)

5.5.2.1.1Reference signal sequence (24)

5.5.2.1.2Mapping to physical resources (25)

5.5.2.2Demodulation reference signal for PUCCH (25)

5.5.2.2.1Reference signal sequence (25)

5.5.2.2.2Mapping to physical resources (26)

5.5.3Sounding reference signal (27)

5.5.3.1Sequence generation (27)

5.5.3.2Mapping to physical resources (27)

5.5.3.3 Sounding reference signal subframe configuration (29)

5.6SC-FDMA baseband signal generation (30)

5.7Physical random access channel (31)

5.7.1Time and frequency structure (31)

5.7.2Preamble sequence generation (37)

5.7.3Baseband signal generation (40)

5.8Modulation and upconversion (40)

6Downlink (41)

6.1Overview (41)

6.1.1Physical channels (41)

6.1.2Physical signals (41)

6.2Slot structure and physical resource elements (42)

6.2.1Resource grid (42)

6.2.2Resource elements (42)

6.2.3Resource blocks (43)

6.2.3.1Virtual resource blocks of localized type (44)

6.2.3.2Virtual resource blocks of distributed type (44)

6.2.4Resource-element groups (45)

6.2.5Guard period for half-duplex FDD operation (46)

6.2.6Guard Period for TDD Operation (46)

6.3General structure for downlink physical channels (46)

6.3.1Scrambling (47)

6.3.2Modulation (47)

6.3.3Layer mapping (47)

6.3.3.1Layer mapping for transmission on a single antenna port (47)

6.3.3.2Layer mapping for spatial multiplexing (47)

6.3.3.3Layer mapping for transmit diversity (48)

6.3.4Precoding (48)

6.3.4.1Precoding for transmission on a single antenna port (48)

6.3.4.2Precoding for spatial multiplexing using antenna ports with cell-specific reference signals (49)

6.3.4.2.1Precoding without CDD (49)

6.3.4.2.2Precoding for large delay CDD (49)

6.3.4.2.3Codebook for precoding (50)

6.3.4.3Precoding for transmit diversity (51)

6.3.4.4Precoding for spatial multiplexing using antenna ports with UE-specific reference signals (52)

6.3.5Mapping to resource elements (52)

6.4Physical downlink shared channel (53)

6.5Physical multicast channel (53)

6.6Physical broadcast channel (53)

6.6.1Scrambling (53)

6.6.2Modulation (53)

6.6.3Layer mapping and precoding (53)

6.6.4Mapping to resource elements (54)

6.7Physical control format indicator channel (54)

6.7.1Scrambling (54)

6.7.2Modulation (55)

6.7.3Layer mapping and precoding (55)

6.7.4Mapping to resource elements (55)

6.8Physical downlink control channel (55)

6.8.1PDCCH formats (55)

6.8.2PDCCH multiplexing and scrambling (56)

6.8.3Modulation (56)

6.8.4Layer mapping and precoding (56)

6.8.5Mapping to resource elements (57)

6.9Physical hybrid ARQ indicator channel (57)

6.9.1Modulation (58)

6.9.2Resource group alignment, layer mapping and precoding (59)

6.9.3Mapping to resource elements (60)

6.10Reference signals (62)

6.10.1Cell-specific reference signals (62)

6.10.1.1Sequence generation (62)

6.10.1.2Mapping to resource elements (63)

6.10.2MBSFN reference signals (65)

6.10.2.1Sequence generation (65)

6.10.2.2Mapping to resource elements (65)

6.10.3UE-specific reference signals (67)

6.10.3.1Sequence generation (67)

6.10.3.2Mapping to resource elements (68)

6.10.4Positioning reference signals (71)

6.10.4.1Sequence generation (72)

6.10.4.2Mapping to resource elements (72)

6.10.4.3Positioning reference signal subframe configuration (73)

6.11Synchronization signals (74)

6.11.1Primary synchronization signal (74)

6.11.1.1Sequence generation (74)

6.11.1.2Mapping to resource elements (74)

6.11.2Secondary synchronization signal (75)

6.11.2.1Sequence generation (75)

6.11.2.2Mapping to resource elements (77)

6.12OFDM baseband signal generation (78)

6.13Modulation and upconversion (78)

7Generic functions (79)

7.1Modulation mapper (79)

7.1.1BPSK (79)

7.1.2QPSK (79)

7.1.316QAM (80)

7.1.464QAM (80)

7.2Pseudo-random sequence generation (81)

8Timing (82)

8.1Uplink-downlink frame timing (82)

Annex A (informative): Change history (83)

Foreword

This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).

The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows:

Version x.y.z

where:

x the first digit:

1 presented to TSG for information;

2 presented to TSG for approval;

3 or greater indicates TSG approved document under change control.

y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc.

z the third digit is incremented when editorial only changes have been incorporated in the document.

1 S cope

The present document describes the physical channels for evolved UTRA.

2 References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

? References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. ? For a specific reference, subsequent revisions do not apply.

? For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document . [1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".

[2] 3GPP TS 36.201: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Layer – General Description".

[3] 3GPP TS 36.212: "Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding".

[4] 3GPP TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures".

[5] 3GPP TS 36.214: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer – Measurements".

[6] 3GPP TS 36.104: “Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception ”.

[7] 3GPP TS 36.101: “Evolved Uni versal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception”.

[8] 3GPP TS36.321, “Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification”

Definitions, symbols and abbreviations

3.1

Symbols

For the purposes of the present document, the following symbols apply:

),(l k

Resource element with frequency-domain index k and time-domain index l )(,p l k a

Value of resource element ),(l k [for antenna port p ] D Matrix for supporting cyclic delay diversity

RA D

Density of random access opportunities per radio frame 0f

Carrier frequency

RA f

PRACH resource frequency index within the considered time-domain location PUSCH

sc M Scheduled bandwidth for uplink transmission, expressed as a number of subcarriers PUSCH RB M Scheduled bandwidth for uplink transmission, expressed as a number of resource blocks (q)M bit Number of coded bits to transmit on a physical channel [for codeword q ]

(q)M sy m b Number of modulation symbols to transmit on a physical channel [for codeword q ] lay er sy m b M Number of modulation symbols to transmit per layer for a physical channel ap sy m b M

Number of modulation symbols to transmit per antenna port for a physical channel N

A constant equal to 2048 for kHz 15=?f and 4096 for kHz 5.7=?f

l N ,CP Downlink cyclic prefix length for OFDM symbol l in a slot CS N

Cyclic shift value used for random access preamble generation

(1)cs N Number of cyclic shifts used for PUCCH formats 1/1a/1b in a resource block with a mix of formats 1/1a/1b and 2/2a/2b

(2)RB N

Bandwidth available for use by PUCCH formats 2/2a/2b, expressed in multiples of RB

sc N HO RB N

The offset used for PUSCH frequency hopping, expressed in number of resource blocks (set by higher layers)

cell ID N Physical layer cell identity MBSFN ID N MBSFN area identity

DL RB N Downlink bandwidth configuration, expressed in multiples of RB

sc N DL min,RB N Smallest downlink bandwidth configuration, expressed in multiples of RB sc N DL max,RB N Largest downlink bandwidth configuration, expressed in multiples of RB sc N UL RB N Uplink bandwidth configuration, expressed in multiples of RB sc N UL min,RB N Smallest uplink bandwidth configuration, expressed in multiples of RB sc N UL max,RB N Largest uplink bandwidth configuration, expressed in multiples of RB sc N

DL sy m b N Number of OFDM symbols in a downlink slot UL sy m b N

Number of SC-FDMA symbols in an uplink slot

RB sc N

Resource block size in the frequency domain, expressed as a number of subcarriers SP N

Number of downlink to uplink switch points within the radio frame PUCCH RS N

Number of reference symbols per slot for PUCCH

TA N

Timing offset between uplink and downlink radio frames at the UE, expressed in units of s T offset TA N

Fixed timing advance offset, expressed in units of s T )

1(PUCCH n Resource index for PUCCH formats 1/1a/1b )

2(PUCCH n

Resource index for PUCCH formats 2/2a/2b PDCCH n Number of PDCCHs present in a subframe PRB n

Physical resource block number

RA PRB n First physical resource block occupied by PRACH resource considered RA offset PRB n

First physical resource block available for PRACH VRB n Virtual resource block number RNTI n Radio network temporary identifier f n System frame number

s n Slot number within a radio frame

P Number of cell-specific antenna ports p Antenna port number q Codeword number

RA r

Index for PRACH versions with same preamble format and PRACH density

Q m

Modulation order: 2 for QPSK, 4 for 16QAM and 6 for 64QAM transmissions

()t s p l )(

Time-continuous baseband signal for antenna port p and OFDM symbol l in a slot )0(RA t Radio frame indicator index of PRACH opportunity

)

1(RA t Half frame index of PRACH opportunity within the radio frame

)2(RA t

Uplink subframe number for start of PRACH opportunity within the half frame f T Radio frame duration s T Basic time unit

slot T Slot duration

Precoding matrix for downlink spatial multiplexing PRACH β Amplitude scaling for PRACH PUCCH β Amplitude scaling for PUCCH PUSCH β Amplitude scaling for PUSCH

SRS β Amplitude scaling for sounding reference symbols f ? Subcarrier spacing

RA f ? Subcarrier spacing for the random access preamble υ Number of transmission layers

3.2

Abbreviations

For the purposes of the present document, the following abbreviations apply:

CCE Control channel element CDD Cyclic delay diversity

PBCH Physical broadcast channel

PCFICH Physical control format indicator channel PDCCH Physical downlink control channel PDSCH Physical downlink shared channel

PHICH Physical hybrid-ARQ indicator channel PMCH Physical multicast channel

PRACH Physical random access channel PUCCH Physical uplink control channel PUSCH Physical uplink shared channel

4 Frame structure

Throughout this specification, unless otherwise noted, the size of various fields in the time domain is expressed as a number of time units )2048150001s ?=T seconds.

Downlink and uplink transmissions are organized into radio frames with ms 10307200s f =?=T T duration. Two radio frame structures are supported: - Type 1, applicable to FDD, - Type 2, applicable to TDD.

4.1 Frame structure type 1

Frame structure type 1 is applicable to both full duplex and half duplex FDD. Each radio frame is

ms 10307200s f =?=T T long and consists of 20 slots of length ms 5.0T 15360s slot =?=T , numbered from 0 to 19. A subframe is defined as two consecutive slots where subframe i consists of slots i 2and 12+i .

For FDD, 10 subframes are available for downlink transmission and 10 subframes are available for uplink transmissions in each 10 ms interval. Uplink and downlink transmissions are separated in the frequency domain. In half-duplex FDD operation, the UE cannot transmit and receive at the same time while there are no such restrictions in full-duplex FDD.

Figure 4.1-1: Frame structure type 1.

4.2 Frame structure type 2

Frame structure type 2 is applicable to TDD. Each radio frame of length ms 10307200s f =?=T T consists of two half-frames of length ms 5153600s =?T each. Each half-frame consists of five subframes of length ms 107203s =?T . The supported uplink-downlink configurations are listed in Table 4.2-2 where, for each subframe in a radio frame, “D” denotes the subframe is reserved for downlink transmissions, “U” denotes the subframe is reserved for uplink

transmissions and “S” denotes a special subframe with the three fields DwPTS, GP and UpPTS. The length of DwPTS and UpPTS is given by Table 4.2-1 subject to the total length of DwPTS, GP and UpPTS being equal

to ms 107203s =?T . Each subframe i is defined as two slots, i 2and 12+i of length ms 5.015360s slot =?=T T in each subframe.

Uplink-downlink configurations with both 5 ms and 10 ms downlink-to-uplink switch-point periodicity are supported. In case of 5 ms downlink-to-uplink switch-point periodicity, the special subframe exists in both half-frames. In case of 10 ms downlink-to-uplink switch-point periodicity, the special subframe exists in the first half-frame only. Subframes 0 and 5 and DwPTS are always reserved for downlink transmission. UpPTS and the subframe immediately following the special subframe are always reserved for uplink transmission.

DwPTS

Figure 4.2-1: Frame structure type 2 (for 5 ms switch-point periodicity).

Table 4.2-1: Configuration of special subframe (lengths of DwPTS/GP/UpPTS).

Table 4.2-2: Uplink-downlink configurations.

5 Uplink

5.1 Overview

The smallest resource unit for uplink transmissions is denoted a resource element and is defined in section 5.2.2. 5.1.1 Physical channels

An uplink physical channel corresponds to a set of resource elements carrying information originating from higher layers and is the interface defined between 36.212 and 36.211. The following uplink physical channels are defined: - Physical Uplink Shared Channel, PUSCH

- Physical Uplink Control Channel, PUCCH

- Physical Random Access Channel, PRACH

5.1.2 Physical signals

An uplink physical signal is used by the physical layer but does not carry information originating from higher layers. The following uplink physical signals are defined:

- Reference signal

5.2

Slot structure and physical resources

5.2.1

Resource grid

The transmitted signal in each slot is described by a resource grid of RB

sc UL RB N N subcarriers and UL sy m b N SC-FDMA

symbols. The resource grid is illustrated in Figure 5.2.1-1. The quantity UL

RB N depends on the uplink transmission bandwidth configured in the cell and shall fulfil

UL max,RB UL RB UL min,RB N N N ≤≤

where 6UL min,RB

=N and 110UL

max,RB =N are the smallest and largest uplink bandwidths, respectively, supported by the current version of this specification. The set of allowed values for UL

RB N is given by [7].

The number of SC-FDMA symbols in a slot depends on the cyclic prefix length configured by the higher layer parameter UL-CyclicPrefixLength and is given in Table 5.2.3-1.

One uplink slot T 0

=l 1

symb -=N l R B U L s u b c a r r i e r RB sc

N ?resource elements

Resource

element

)

,(l k 1

sc -N

Figure 5.2.1-1: Uplink resource grid.

5.2.2 Resource elements

Each element in the resource grid is called a resource element and is uniquely defined by the index pair ()l k , in a slot

where 1,...,0RB

sc UL RB -=N N k and 1,...,0UL sy mb -=N l are the indices in the frequency and time domains, respectively.

Resource element ()l k , corresponds to the complex value l k a ,. Quantities l k a , corresponding to resource elements not used for transmission of a physical channel or a physical signal in a slot shall be set to zero.

5.2.3 Resource blocks

A physical resource block is defined as UL

sy m b N consecutive SC-FDMA symbols in the time domain and

RB sc N consecutive subcarriers in the frequency domain, where UL sy m b N and RB sc N are given by Table 5.2.3-1. A physical resource block in the uplink thus consists of RB sc UL sy mb N N ? resource elements, corresponding to one slot in the time

domain and 180 kHz in the frequency domain.

Table 5.2.3-1: Resource block parameters.

The relation between the physical resource block number PRB n in the frequency domain and resource elements ),(l k in a slot is given by

???

?????=RB sc PRB

N k n 5.3 Physical uplink shared channel

The baseband signal representing the physical uplink shared channel is defined in terms of the following steps: - scrambling

- modulation of scrambled bits to generate complex-valued symbols - transform precoding to generate complex-valued symbols - mapping of complex-valued symbols to resource elements

- generation of complex-valued time-domain SC-FDMA signal for each antenna port

Figure 5.3-1: Overview of uplink physical channel processing.

5.3.1 Scrambling

The block of bits )1(),...,0(bit -M b b , where bit M is the number of bits transmitted on the physical uplink shared

channel in one subframe, shall be scrambled with a UE-specific scrambling sequence prior to modulation, resulting in a

block of scrambled bits )1(~

),...,0(~bit -M b b according to the following pseudo code Set i = 0 while bit M i < if x )(=i b // ACK/NACK or Rank Indication placeholder bits

1)(~

=i b

else

if y i b =)( // ACK/NACK or Rank Indication repetition placeholder bits

)1(~

)(~-=i b i b

else // Data or channel quality coded bits, Rank Indication coded bits or ACK/NACK coded bits

()2mod )()()(~

i c i b i b +=

end if

i = i + 1

end while

where x and y are tags defined in [3] section 5.2.2.6 and where the scrambling sequence )(i c is given by Section 7.2.

The scrambling sequence generator shall be initialised with ??cell

ID 9s 14RNTI init 22N n n c +?+?= at the start of each

subframe where RNTI n corresponds to the RNTI associated with the PUSCH transmission as described in Section 8 in [4].

5.3.2 Modulation

The block of scrambled bits )1(~

),...,0(~bit -M b b shall be modulated as described in Section 7.1, resulting in a block of

complex-valued symbols )1(),...,0(sy mb -M d d . Table 5.3.2-1 specifies the modulation mappings applicable for the physical uplink shared channel.

Table 5.3.2-1: Uplink modulation schemes.

5.3.3 Transform precoding

The block of complex-valued symbols )1(),...,0(sy mb -M d d is divided into PUSCH

sc sy mb M M sets, each corresponding

to one SC-FDMA symbol. Transform precoding shall be applied according to

,...,01,...,0)(1

)(PUSCH sc sy mb PUSCH

sc 1

2PUSCH

sc PUSCH

PUSCH

sc PUSCH

-=-=+?=

+?∑

-=-M M l M k e

i M l d M k M l z M i M ik

resulting in a block of complex-valued symbols )1(),...,0(sy mb -M z z . The variable RB

sc PUSCH RB PUSCH sc N M M ?=, where PUSCH

RB M represents the bandwidth of the PUSCH in terms of resource blocks, and shall fulfil

RB PUSCH RB 532532N M ≤??=ααα

where 532,,ααα is a set of non-negative integers.

5.3.4 Mapping to physical resources

The block of complex-valued symbols )1(),...,0(sy mb -M z z shall be multiplied with the amplitude scaling factor

PUSCH β in order to conform to the transmit power PUSCH P specified in Section 5.1.1.1 in [4], and mapped in sequence

starting with )0(z to physical resource blocks assigned for transmission of PUSCH. The mapping to resource elements

()l k , corresponding to the physical resource blocks assigned for transmission and not used for transmission of

reference signals and not reserved for possible SRS transmission shall be in increasing order of first the index k , then

the index l , starting with the first slot in the subframe.

If uplink frequency-hopping is disabled, the set of physical resource blocks to be used for transmission is given by VRB PRB n n = where VRB n is obtained from the uplink scheduling grant as described in Section 8.1 in [4].

If uplink frequency-hopping with type 1 PUSCH hopping is enabled, the set of physical resource blocks to be used for transmission is given by Section 8.4.1 in [4].

If uplink frequency-hopping with predefined hopping pattern is enabled, the set of physical resource blocks to be used for transmission in slot s n is given by the scheduling grant together with a predefined pattern according to

()()()()()

????

?????>-==??

??>+==???--=??--+?+=121~12)(~1)(~)(hopping subframe inter and intra hopping

subframe inter 2)

mod()(mod ~21~)(~HO

RB VRB

VRB VRB HO

RB s PRB s PRB s PRB s

sb sb RB m sb RB VRB sb RB sb RB hop VRB s PRB sb sb sb sb N N n N n n N N n n N n n n n n n i N N i f N n N N i f n n n

where VRB n is obtained from the scheduling grant as described in Section 8.1 in [4]. The parameter pusch-HoppingOffset ,HO RB N , is provided by higher layers. The size sb

RB N of each sub-band is given by,

()

???>--==1

2mod 1sb sb

HO RB HO RB UL RB

sb UL

N N N N N

N N N

where the number of sub-bands sb N is given by higher layers. The function {}1,0)(m ∈i f determines whether mirroring

is used or not. The parameter Hopping-mode provided by higher layers determines if hopping is “inter -subframe” or “intra and inter -subframe”.

The hopping function )(hop i f and the function )(m i f are given by

???

>+-???? ???+-=?+-==∑

∑

+?+?=+?-+?+?=+?-2

mod )1)1mod(2)()1((2mod )2)()1((10)(sb sb

sb 910110)110(hop sb sb 910110)110(hop sb hop N N N k c i f N N k c i f N i f i i k i k i i k i k

??>?-=-==1)10(hopping

subframe inter and 12mod _NB CURRENT_TX hopping subframe inter and intra and 12

mod )(sb sb sb m N i c N N i i f where 0)1(hop =-f and the pseudo-random sequence )(i c is given by section 7.2 and CURRENT_TX_NB indicates the transmission number for the transport block transmitted in slot s n as defined in [8]. The pseudo-random sequence

generator shall be initialised with cell

ID init N c = for frame structure type 1 and cell

ID f 9init )4mod (2N n c +?= for frame

structure type 2

at the start of each frame.

5.4 Physical uplink control channel

The physical uplink control channel, PUCCH, carries uplink control information. The PUCCH is never transmitted simultaneously with the PUSCH from the same UE. For frame structure type 2, the PUCCH is not transmitted in the UpPTS field.

The physical uplink control channel supports multiple formats as shown in Table 5.4-1. Formats 2a and 2b are supported for normal cyclic prefix only.

Table 5.4-1: Supported PUCCH formats.

All PUCCH formats use a cyclic shift of a sequence in each symbol, where ),(cell

l n n s is used to derive the cyclic shift for the different PUCCH formats. The quantity ),(cell

l n n s varies with the symbol number l and the slot number s n according to

∑=?++?=

0s UL sym

b s cell cs 2)88(),(i i

i l n N c l n n where the pseudo-random sequence )(i c is defined by section 7.2. The pseudo-random sequence generator shall be

initialized with cell

ID init N c = at the beginning of each radio frame.

The physical resources used for PUCCH depends on two parameters, (2)RB N and (1)cs N , given by higher layers. The variable 0(2)

≥N denotes the bandwidth in terms of resource blocks that are available for use by PUCCH formats 2/2a/2b transmission in each slot. The variable (1)

cs N denotes the number of cyclic shift used for PUCCH formats 1/1a/1b in a resource block used for a mix of formats 1/1a/1b and 2/2a/2b. The value of (1)cs N is an integer multiple of

PUCCH shift ? within the range of {0, 1, …, 7}, where PUCCH shift

? is provided by higher layers. No mixed resource block is present if 0(1)

=N . At most one resource block in each slot supports a mix of formats 1/1a/1b and 2/2a/2b. Resources

used for transmission of PUCCH format 1/1a/1b and 2/2a/2b are represented by the non-negative indices (1)

PUCCH n and )2(8(1)

cs RB sc (1)cs

RB sc

(2)RB (2)

PUCCH

--???

????+<

N N N N N n , respectively. 5.4.1 PUCCH formats 1, 1a and 1b

For PUCCH format 1, information is carried by the presence/absence of transmission of PUCCH from the UE. In the remainder of this section, 1)0(=d shall be assumed for PUCCH format 1.

For PUCCH formats 1a and 1b, one or two explicit bits are transmitted, respectively. The block of bits

)1(),...,0(bit -M b b shall be modulated as described in Table 5.4.1-1, resulting in a complex-valued symbol )0(d . The modulation schemes for the different PUCCH formats are given by Table 5.4-1.

The complex-valued symbol )0(d shall be multiplied with a cyclically shifted length 12PUCCH seq =N sequence )()

(,n r v u α

according to

1,...,1,0

),()0()(PUCCH

seq )(,-=?=N n n r d n y v u α where )()

(,n r v u α is defined by section 5.5.1 with PUCCH seq

RS sc N M =. The cyclic shift α varies between symbols and slots as defined below.

The block of complex-valued symbols )1(),...,0(PUCCH

seq

-N y y shall be scrambled by )(s n S and block-wise spread with the orthogonal sequence )(oc i w n according to

()

()n y m w n S n N m N N m z n ??=+?+??)()('oc s PUCCH

seq PUCCH seq PUCCH SF

where

,0'1,...,01,...,0PUCCH seq PUCCH

SF =-=-=m N n N m

and

???==otherw ise

2mod )('if 1

)(2

s s π

j e

n n n S

with 4PUCCH SF

=N for both slots of normal PUCCH formats 1/1a/1b, and 4PUCCH

SF =N for the first slot and 3PUCCH

SF =N for the second slot of shortened PUCCH formats 1/1a/1b. The sequence )(oc i w n is given by Table 5.4.1-2

and Table 5.4.1-3 and )('s n n is defined below.

Resources used for transmission of PUCCH format 1, 1a and 1b are identified by a resource index (1)

PUCCH n from which

the orthogonal sequence index )(s oc n n and the cyclic shift ),(s l n α are determined according to

(

)()[]

(

)[]

????

?'+??'+'?+??'+=?=??

?'??'?'

??'=prefix

cyclic extended for mod mod 2)()(),(prefix cyclic normal for mod mod mod )()(),(),(),(2),(prefix

cyclic extended for )(2prefix

cyclic normal for )()(RB

sc s oc PUCCH shift s cell cs RB sc

PUCCH shift s oc PUCCH shift s cell cs s cs RB

s cs s PUCCH shift s PUCCH shift

s s oc N N n n n n l n n N N n n n n l n n l n n N l n n l n N n n N n n n n s

s πα

where

?=???????<='prefix

cyclic extended 2prefix cyclic normal 3otherwise if RB

sc PUCCH shift

(1)cs (1)PUCCH (1)cs c N N c n N N The resource indices within the two resource blocks in the two slots of a subframe to which the PUCCH is mapped are given by

()(

)

?????????-??<='otherwise

mod if )(PUCCH shift RB

sc PUCCH shift

(1)cs )1(PUCCH PUCCH shift

(1)

cs )1(PUCCH )

1(PUCCH

s N c N c n N c n n

n n

for 02mod s =n and by

()[](

)

??()????

??+??≥-+?+-'='otherw ise /'mod /11mod 1)1()(PUCCH

shift

PUCCH shift (1)cs )1(PUCCH PUCCH shift RB sc s s N c h c h N c n cN n n c n n

for 12mod s =n , where ()()PUCCH shift s cN d n n h ?+-=/'mod )1(', with 2=d for normal CP and 0=d for extended CP. The parameter deltaPUCCH-Shift PUCCH shift

? is provided by higher layers. Table 5.4.1-1: Modulation symbol )0(d for PUCCH formats 1a and 1b.

Table 5.4.1-2: Orthogonal sequences []

)1()0(PUCCH

SF -N w w for 4PUCCH SF

=N .

Table 5.4.1-3: Orthogonal sequences []

)1()0(PUCCH

SF -N w w for 3PUCCH SF =N .

5.4.2 PUCCH formats 2, 2a and 2b

The block of bits )19(),...,0(b b shall be scrambled with a UE-specific scrambling sequence, resulting in a block of scrambled bits )19(~

),...,0(~b b according to

()2mod )()()(~

i c i b i b +=

where the scrambling sequence )(i c is given by Section 7.2. The scrambling sequence generator shall be initialised

with ??()()

RNTI 16cell

s init 2121n N n c +?+?+= at the start of each subframe where RNTI n is C-RNTI. The block of scrambled bits )19(~

),...,0(~b b shall be QPSK modulated as described in Section 7.1, resulting in a block of

complex-valued modulation symbols )9(),...,0(d d .

Each complex-valued symbol )9(),...,0(d d shall be multiplied with a cyclically shifted length 12PUCCH

seq

=N sequence )()

(,n r v u α according to

,...,1,09

,...,1,0)

()()(RB

sc )

(,PUCCH seq -==?=+?N i n i r n d i n N z v u α

where )()

(,i r v u α is defined by section 5.5.1 with PUCCH seq

RS sc N M =. Resources used for transmission of PUCCH formats 2/2a/2b are identified by a resource index (2)

PUCCH n from which the

cyclic shift ),(s l n α is determined according to

s cs s ),(2),(N l n n l n ?=πα where

()

s s cell cs s cs N n n l n n l n n mod )('),(),(+= and

()

?????++<=otherwise

mod 1 if mod )('RB sc

(1)cs (2)PUCCH (2)

RB RB sc )2(PUCCH RB sc (2)PUCCH

s N N n N N n N n

n n for 02mod s =n and by

()[

]()

()

?????--<-++-=otherwise mod 2 if 11mod 1)1(')('RB

)2(PUCCH RB

sc (2)RB RB sc )2(PUCCH RB sc s RB sc s N n N N N n N n n N n n

for 12mod s =n .

For PUCCH formats 2a and 2b, supported for normal cyclic prefix only, the bit(s) )1(),...,20(bit -M b b shall be

modulated as described in Table 5.4.2-1 resulting in a single modulation symbol )10(d used in the generation of the reference-signal for PUCCH format 2a and 2b as described in Section 5.5.2.2.1.

Table 5.4.2-1: Modulation symbol )10(d for PUCCH formats 2a and 2b.

5.4.3 Mapping to physical resources

The block of complex-valued symbols )(i z shall be multiplied with the amplitude scaling factor PUCCH β in order to conform to the transmit power PUCCH P specified in Section 5.1.2.1 in [4], and mapped in sequence starting with )0(z to resource elements. PUCCH uses one resource block in each of the two slots in a subframe. Within the physical resource block used for transmission, the mapping of )(i z to resource elements ()l k , not used for transmission of reference signals shall be in increasing order of first k , then l and finally the slot number, starting with the first slot in the subframe.

The physical resource blocks to be used for transmission of PUCCH in slot s n are given by

()()???

???

?=+???

???--=+??????=1

2mod 2mod if 210

2mod 2mod if 2s UL RB

s PRB

n m m N n m m n

where the variable m depends on the PUCCH format. For formats 1, 1a and 1b

?=?????????????++?????

???????-??<=prefix

cyclic extended 2prefix

cyclic normal 3otherwise 8 if (1)cs (2)

RB PUCCH shift RB sc PUCCH shift (1)cs (1)PUCCH PUCCH shift

(1)cs (1)PUCCH (2)RB c N N N c N c n N c n N m