ETSI TS 125 213 V16.0.0 (2020-09)

Universal Mobile Telecommunications System (UMTS); Spreading and modulation (FDD) (3GPP TS 25.213 version 16.0.0 Release 16)

RTS/TSGR-0625213vg00

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN 6 - Legacy RAN radio and protocol
• Current Stage: 12 - Completion
• Completion Date: 14-Sep-2020

Standards Content (Sample)

ETSI TS 125 213 V16.0.0 (2020-09)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
Spreading and modulation (FDD)
(3GPP TS 25.213 version 16.0.0 Release 16)

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3GPP TS 25.213 version 16.0.0 Release 16 1 ETSI TS 125 213 V16.0.0 (2020-09)



Reference
RTS/TSGR-0625213vg00
Keywords
UMTS
ETSI
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3GPP TS 25.213 version 16.0.0 Release 16 2 ETSI TS 125 213 V16.0.0 (2020-09)
Intellectual Property Rights
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Legal Notice
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Modal verbs terminology
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"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 3 ETSI TS 125 213 V16.0.0 (2020-09)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 5
1 Scope . 6
2 References . 6
3 Symbols, abbreviations and definitions . 6
3.1 Symbols . 6
3.2 Abbreviations . 6
3.3 Definitions . 7
4 Uplink spreading and modulation . 8
4.1 Overview . 8
4.2 Spreading . 8
4.2.1 Dedicated physical channels . 8
4.2.1.1 DPCCH/DPDCH . 10
4.2.1.2 HS-DPCCH . 12
4.2.1.3 E-DPDCH/E-DPCCH . 13
4.2.1.4 S-DPCCH . 21
4.2.1.4.1 S-DPCCH gain factor setting while not transmitting rank-2 . 21
4.2.1.4.2 S-DPCCH gain factor setting while transmitting rank-2 . 22
4.2.1.5 S-E-DPCCH . 22
4.2.1.6 S-E-DPDCH . 23
4.2.1.7 DPCCH2 . 24
4.2.2 PRACH . 25
4.2.2.1 PRACH preamble part . 25
4.2.2.2 PRACH message part . 25
4.2.3 Void . 25
4.2.4 Channel combining for UL CLTD and UL MIMO . 25
4.3 Code generation and allocation . 26
4.3.1 Channelisation codes . 26
4.3.1.1 Code definition . 26
4.3.1.2 Code allocation for dedicated physical channels . 27
4.3.1.2.1 Code allocation for DPCCH/ S-DPCCH/DPDCH/DPCCH2 . 27
4.3.1.2.2 Code allocation for HS-DPCCH when the UE is not configured in MIMO mode with four
transmit antennas in any cell . 28
4.3.1.2.2A Code allocation for HS-DPCCH when the UE is configured in MIMO mode with four
transmit antennas in at least one cell . 29
4.3.1.2.3 Code allocation for E-DPCCH/E-DPDCH . 30
4.3.1.2.4 Code allocation for S-E-DPCCH/S-E-DPDCH . 31
4.3.1.3 Code allocation for PRACH message part . 31
4.3.1.4 Void. 31
4.3.1.5 Void. 31
4.3.2 Scrambling codes . 31
4.3.2.1 General . 31
4.3.2.2 Long scrambling sequence . 32
4.3.2.3 Short scrambling sequence . 33
4.3.2.4 Dedicated physical channels scrambling code . 34
4.3.2.5 PRACH message part scrambling code. 34
4.3.2.6 Void. 35
4.3.2.7 Void. 35
4.3.3 PRACH preamble codes . 35
4.3.3.1 Preamble code construction . 35
4.3.3.2 Preamble scrambling code . 35
4.3.3.3 Preamble signature . 35
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 4 ETSI TS 125 213 V16.0.0 (2020-09)
4.3.4 Void . 36
4.4 Modulation . 36
4.4.1 Modulating chip rate . 36
4.4.2 Modulation . 36
5 Downlink spreading and modulation . 37
5.1 Spreading . 37
5.1.1 Modulation mapper . 37
5.1.1.1 QPSK . 37
5.1.1.2 16QAM . 38
5.1.1.3 64QAM . 38
5.1.2 Channelisation . 39
5.1.3 IQ combining . 39
5.1.4 Scrambling . 39
5.1.5 Channel combining . 39
5.2 Code generation and allocation . 40
5.2.1 Channelisation codes . 40
5.2.2 Scrambling code . 41
5.2.3 Synchronisation codes . 43
5.2.3.1 Code generation . 43
5.2.3.2 Code allocation of SSC . 43
5.3 Modulation . 46
5.3.1 Modulating chip rate . 46
5.3.2 Modulation . 46
Annex A (informative): Generalised Hierarchical Golay Sequences . 47
A.1 Alternative generation . 47
Annex B (informative):  Uplink modulation for operation on adjacent frequencies . 48
Annex B1 (informative):  Uplink modulation for UL CLTD . 49
Annex B2 (informative):  Uplink modulation for operation on dual band frequencies . 50
Annex C (informative):  Change history . 51
History . 53

ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 5 ETSI TS 125 213 V16.0.0 (2020-09)
Foreword
rd
This Technical Specification (TS) has been produced by the 3 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.
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 6 ETSI TS 125 213 V16.0.0 (2020-09)
1 Scope
The present document describes spreading and modulation for UTRA Physical Layer FDD mode.
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 TS 25.201: "Physical layer - general description".
[2] 3GPP TS 25.211: "Physical channels and mapping of transport channels onto physical channels
(FDD)."
[3] 3GPP TS 25.101: "UE Radio transmission and Reception (FDD)".
[4] 3GPP TS 25.104: "UTRA (BS) FDD; Radio transmission and Reception".
[5] 3GPP TS 25.308: "UTRA High Speed Downlink Packet Access (HSDPA); Overall description".
[6] 3GPP TS 25.214: "Physical layer procedures (FDD)".
[7] 3GPP TS 25.212: "Multiplexing and channel coding (FDD)".
3 Symbols, abbreviations and definitions
3.1 Symbols
For the purposes of the present document, the following symbols apply:
C : n:th channelisation code with spreading factor SF
ch,SF,n
C : PRACH preamble code for n:th preamble scrambling code and signature s
pre,n,s
C : PRACH signature code for signature s
sig,s
S : n:th DPCCH/DPDCH uplink scrambling code
dpch,n
S : n:th PRACH preamble scrambling code
r-pre,n
S : n:th PRACH message scrambling code
r-msg,n
S : DL scrambling code
dl,n
C: PSC code
psc
Cssc,n: n:th SSC code
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
16QAM 16 Quadrature Amplitude Modulation
4PAM 4 Pulse Amplitude Modulation
64QAM 64 Quadrature Amplitude Modulation
8PAM 8 Pulse Amplitude Modulation
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 7 ETSI TS 125 213 V16.0.0 (2020-09)
AICH Acquisition Indicator Channel
BCH Broadcast Channel
CCPCH Common Control Physical Channel
CLTD Closed Loop Transmit Diversity
CPICH Common Pilot Channel
DCH Dedicated Channel
DPCH Dedicated Physical Channel
DPCCH Dedicated Physical Control Channel
DPCCH2 Dedicated Physical Control Channel 2
DPDCH Dedicated Physical Data Channel
E-AGCH E-DCH Absolute Grant Channel
E-DPCCH E-DCH Dedicated Physical Control Channel
E-DPDCH E-DCH Dedicated Physical Data Channel
E-HICH E-DCH Hybrid ARQ Indicator Channel
E-RGCH E-DCH Relative Grant Channel
E-ROCH E-DCH Rank and Offset Channel
FDD Frequency Division Duplex
F-DPCH Fractional Dedicated Physical Channel
F-TPICH Fractional Transmitted Precoding Indicator Channel
HS-DPCCH Dedicated Physical Control Channel (uplink) for HS-DSCH
Secondary Dedicated Physical Control Channel (uplink) for HS-DSCH, when
HS-DPCCH2
Secondary_Cell_Enabled is greater than 3
HS-DSCH High Speed Downlink Shared Channel
HS-PDSCH High Speed Physical Downlink Shared Channel
HS-SCCH Shared Control Physical Channel for HS-DSCH
MBSFN MBMS over a Single Frequency Network
Mcps Mega Chip Per Second
MICH MBMS Indication Channel
OVSF Orthogonal Variable Spreading Factor (codes)
TPI Transmitted Precoding Indicator
PICH Page Indication Channel
PRACH Physical Random Access Channel
PSC Primary Synchronisation Code
RACH Random Access Channel
SCH Synchronisation Channel
S-DPCCH Secondary Dedicated Physical Control Channel
S-E-DPCCH Secondary Dedicated Physical Control Channel for E-DCH
S-E-DPDCH Secondary Dedicated Physical Data Channel for E-DCH
SSC Secondary Synchronisation Code
SF Spreading Factor
UE User Equipment
3.3 Definitions
Activated uplink frequency: For a specific UE, an uplink frequency is said to be activated if the UE is allowed to
transmit on that frequency. The primary uplink frequency is always activated when configured while a secondary uplink
frequency has to be activated by means of an HS-SCCH order in order to become activated. Similarly, for a specific UE,
an uplink frequency is said to be deactivated if it is configured but disallowed by the NodeB to transmit on that frequency.
Configured uplink frequency: For a specific UE, an uplink frequency is said to be configured if the UE has received all
relevant information from higher layers in order to perform transmission on that frequency.
Primary uplink frequency: If a single uplink frequency is configured for the UE, then it is the primary uplink frequency.
In case more than one uplink frequency is configured for the UE, then the primary uplink frequency is the frequency on
which the E-DCH corresponding to the serving E-DCH cell associated with the serving HS-DSCH cell is transmitted.
The association between a pair of uplink and downlink frequencies is indicated by higher layers.
Secondary uplink frequency: A secondary uplink frequency is a frequency on which an E-DCH corresponding to a
serving E-DCH cell associated with a secondary serving HS-DSCH cell is transmitted. The association between a pair
of uplink and downlink frequencies is indicated by higher layers.
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 8 ETSI TS 125 213 V16.0.0 (2020-09)
4 Uplink spreading and modulation
4.1 Overview
Spreading is applied to the physical channels. It consists of two operations. The first is the channelisation operation,
which transforms every data symbol into a number of chips, thus increasing the bandwidth of the signal. The number of
chips per data symbol is called the Spreading Factor (SF). The second operation is the scrambling operation, where a
scrambling code is applied to the spread signal.
With the channelisation, data symbols on so-called I- and Q-branches are independently multiplied with an OVSF code.
With the scrambling operation, the resultant signals on the I- and Q-branches are further multiplied by complex-valued
scrambling code, where I and Q denote real and imaginary parts, respectively.
4.2 Spreading
4.2.1 Dedicated physical channels
The possible combinations of the maximum number of respective dedicated physical channels which may be configured
simultaneously for a UE in addition to the DPCCH are specified in table 0. The actual UE capability may be lower than
the values specified in table 0; the actual dedicated physical channel configuration is indicated by higher layer
signalling. The actual number of configured DPDCHs, denoted Nmax-dpdch, is equal to the largest number of DPDCHs
from all the TFCs in the TFCS. N is not changed by frame-by-frame TFCI change or temporary TFC
max-dpdch
restrictions.
Table 0: Maximum number of simultaneously-configured uplink dedicated channels
DPDCH HS-DPCCH E-DPDCH E-DPCCH S-E-DPDCH S-E-DPCCH
Case 1 6 1 - - - -
Case 2 1 1 2 1 - -
Case 3 - 1 on the 4 per uplink 1 per uplink - -
primary uplink frequency frequency
frequency, 0
on any
secondary
uplink
frequency
Case 4 1 2 2 1 - -
Case 5 - 2 on the 4 per uplink 1 per uplink - -
primary uplink frequency frequency
frequency, 0
on any
secondary
uplink
frequency
Case 6 - 2 4 1 4 1
Case X 1 on the 2 on the 2 on the 1 per uplink - -
primary uplink primary uplink primary uplink frequency
frequency frequency, 0 frequency, 4
on any on the
secondary secondary
uplink uplink
frequency frequency

Figure 1 illustrates the principle of the spreading of uplink dedicated physical channels (DPCCH, DPDCHs, HS-
DPCCH, DPCCH2, E-DPCCH, E-DPDCHs, S-E-DPCCH). Figure 1.1 illustrates the principle of the spreading of
uplink S-DPCCH and S-E-DPDCHs.
ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 9 ETSI TS 125 213 V16.0.0 (2020-09)
In case of BPSK modulation , the binary input sequences of all physical channels are converted to real valued
sequences, i.e. the binary value "0" is mapped to the real value +1, the binary value "1" is mapped to the real value –1,
and the value "DTX" (HS-DPCCH only) is mapped to the real value 0.
In case of 4PAM modulation, the binary input sequences of all E-DPDCH and S-E-DPDCH physical channels are
converted to real valued sequences, i.e. a set of two consecutive binary symbols nk, nk+1 (with k mod 2 = 0) in each
binary sequence is converted to a real valued sequence following the mapping described in Table 0A.
In case of 8PAM modulation, the binary input sequences of all E-DPDCH and S-E-DPDCH physical channels are
converted to real valued sequences, i.e. a set of three consecutive binary symbols n , n , n (with k mod 3 = 0) in
k k+1 k+2
each binary sequence is converted to a real valued sequence following the mapping described in Table 0B.
Table 0A: Mapping of E-DPDCH and S-E-DPDCH
with 4PAM modulation
nk, nk+1 Mapped real value
00 0.4472
01 1.3416
10 -0.4472
11 -1.3416

Table 0B: Mapping of E-DPDCH and S-E-DPDCH
with 8PAM modulation
n , n , n Mapped real value
k k+1 k+2
000 0.6547
001 0.2182
010 1.0911
011 1.5275
100 -0.6547
101 -0.2182
110 -1.0911
111 -1.5275



DPCCH
S
dpch
DPDCHs
Spreading



S
S
dpcch2 dpch,n
DPCCH2
Spreading
I+jQ
S
hs-dpcch
HS-DPCCH
Σ
Spreading
S
E-DPDCHs
Σ
S
e-dpch
E-DPCCH
Spreading
S-E-DPCCH S
s-e- dpcch
Spreading

Figure 1: Spreading for uplink dedicated channels

ETSI

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3GPP TS 25.213 version 16.0.0 Release 16 10 ETSI TS 125 213 V16.0.0 (2020-09)

S-DPCCH S
s-dpcch
Spreading
S
dpch,n
I+jQ
Σ
S’
S-E-DPDCHs S
s-e-dpdch
Spreading

Figure 1.1: Spreading for uplink S-DPCCH and S-E-DPDCHs
The spreading operation is specified in subclauses 4.2.1.1 to 4.2.1.4 for each of the dedicated physical channels; it
includes a spreading stage, a weighting stage, and an IQ mapping stage. In the process, the streams of real-valued chips
on the I and Q branches are summed; this results in a complex-valued stream of chips for each set of channels.
As described in figure 1, the resulting complex-valued streams Sdpch, Sdpcch2, Shs-dpcch, Se-dpch and Ss-e-dpcch are summed
into a single complex-valued stream which is then scrambled by the complex-valued scrambling code S resulting in
dpch,n
the complex-valued signal S. As described in Figure 1.1, the resulting complex-valued streams S and S are
s-dpcch s-e-dpdch
summed into a single complex-valued stream which is scrambled by the same complex-valued scrambling code S
dpch,n
resulting in the complex-valued signal S'. The scrambling code shall be applied aligned with the radio frames, i.e. the
first scrambling chip corresponds to
...