ETSI TS 101 851-1-3 V3.1.1 (2011-09)

Satellite Earth Stations and Systems (SES); Satellite Component of UMTS/IMT-2000; Part 1: Physical channels and mapping of transport channels into physical channels; Sub-part 3: G-family enhancements (S-UMTS-G enhanced 25.211)

DTS/SES-00314-1-3

General Information

• Status: Published
• Publication Date: 31-Aug-2011
• Technical Committee: SES MSS - SES WG on Mobile Satellite Systems
• Current Stage: 12 - Completion
• Due Date: 31-Aug-2011
• Completion Date: 01-Sep-2011

Standards Content (Sample)

Technical Specification
Satellite Earth Stations and Systems (SES);
Satellite Component of UMTS/IMT-2000;
Part 1: Physical channels and mapping of
transport channels into physical channels;
Sub-part 3: G-family enhancements
(S-UMTS-G enhanced 25.211)
2 ETSI TS 101 851-1-3 V3.1.1 (2011-09)

Reference
DTS/SES-00314-1-3
Keywords
interface, MES, MSS, radio, satellite, UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2011.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Contents
Intellectual Property Rights . 5
Foreword . 5
Introduction . 5
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Symbols and abbreviations . 8
3.1 Symbols . 8
3.2 Abbreviations . 9
4 Services offered to higher layers . 10
4.1 Transport channels . 10
4.1.1 Dedicated transport channels . 10
4.1.1.1 Dedicated CHannel (DCH) . 10
4.1.2 Common transport channels . 10
4.1.2.1 Broadcast CHannel (BCH) . 10
4.1.2.2 Forward Access CHannel (FACH) . 10
4.1.2.3 Paging CHannel (PCH) . 10
4.1.2.4 Random Access CHannel (RACH) . 11
4.2 Indicators . 11
5 Physical channels and physical signals . 11
5.1 Physical signals . 11
5.2 Uplink physical channels . 11
5.2.1 Dedicated uplink physical channels . 11
5.2.2 Common uplink physical channels . 15
5.2.2.1 Physical Random Access CHannel (PRACH) . 15
5.2.2.1.1 Overall structure of random-access transmission . 15
5.2.2.1.2 RACH preamble part . 16
5.2.2.1.3 RACH message part . 17
5.3 Downlink physical channels . 18
5.3.1 Dedicated downlink physical channels . 18
5.3.2 Common downlink physical channels . 22
5.3.2.1 Common PIlot CHannel (CPICH). 22
5.3.2.1.1 Primary Common PIlot CHannel (P-CPICH) . 23
5.3.2.1.2 Secondary Common PIlot CHannel (S-CPICH) . 23
5.3.2.2 Downlink phase reference . 23
5.3.2.3 Primary Common Control Physical CHannel (P-CCPCH) . 23
5.3.2.4 Secondary Common Control Physical CHannel (S-CCPCH) . 24
5.3.2.5 Synchronization CHannel (SCH) . 26
5.3.2.6 Acquisition Indicator CHannel (AICH) . 26
5.3.2.7 Paging Indicator CHannel (PICH) . 27
5.3.2.8 High Penetration Page Indication Channel (HPPICH) . 28
5.3.2.9 MBMS Indicator CHannel (MICH) . 29
6 Mapping and association of physical channels . 30
6.1 Mapping of transport channels onto physical channels . 30
6.2 Association of physical channels and physical signals . 30
7 Timing relationship between physical channels . 31
7.1 General . 31
7.2 PICH/S-CCPCH timing relation . 32
7.3 PRACH/AICH timing relation . 32
7.4 DPCCH/DPDCH timing relations . 34
ETSI
4 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
7.4.1 Uplink . 34
7.4.2 Downlink . 34
7.4.3 Uplink/downlink timing at UE. 34
7.5 MICH/S-CCPCH timing relation . 34
Annex A (normative): Description of G-family enhancements . 35
A.1 Definition of the optional modes A and C. 35
A.2 Description of optional mode A . 35
A.3 Description of Optional mode C . 36
Annex B (informative): Change history . 37
B.1 A-family optional features . 37
B.2 C-family optional features . 37
History . 40

ETSI
5 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Satellite Earth Stations and
Systems (SES).
The present document is specifying the Satellite Radio Interface referenced as SRI Family G at ITU-R, in the frame of
the modification of ITU-R Recommendation M.1457 [i.4]. This modification has been approved at ITU-R SG8 meeting
in November 2005.
The present document is part 1, sub-part 3 of a multi-part deliverable covering Satellite Earth Stations and
Systems (SES); Satellite Component of UMTS/IMT-2000; G-family enhancements as identified below:
Part 1: "Physical channels and mapping of transport channels into physical channels";
Sub-part 1: "G-family (S-UMTS-G 25.211)";
Sub-part 2: "A-family (S-UMTS-A 25.211)";
Sub-part 3: "G-family enhancements (S-UMTS-G enhanced 25.211)";
Part 2: "Multiplexing and channel coding";
Part 3: "Spreading and modulation";
Part 4: "Physical layer procedures";
Part 5: "UE Radio Transmission and Reception";
Part 6: "Ground stations and space segment radio transmission and reception".
Introduction
S-UMTS stands for the Satellite component of the Universal Mobile Telecommunication System. S-UMTS systems will
complement the terrestrial UMTS (T-UMTS) and inter-work with other IMT-2000 family members through the UMTS
rd
core network. S-UMTS will be used to deliver 3 generation Mobile Satellite Services (MSS) utilizing either
geostationary (GEO), or low (LEO) or medium (MEO) earth orbiting satellite(s). S-UMTS systems are based on
terrestrial 3GPP specifications and will support access to GSM/UMTS core networks.
NOTE 1: The term T-UMTS will be used in the present document to further differentiate the Terrestrial UMTS
component.
Due to the differences between terrestrial and satellite channel characteristics, some modifications to the terrestrial
UMTS (T-UMTS) standards are necessary. Some specifications are directly applicable, whereas others are applicable
with modifications. Similarly, some T-UMTS specifications do not apply, whilst some S-UMTS specifications have no
corresponding T-UMTS specification.
ETSI
6 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Since S-UMTS is derived from T-UMTS, the organization of the S-UMTS specifications closely follows the original
rd
3 Generation Partnership Project (3GPP) structure. The S-UMTS numbers have been designed to correspond to the
3GPP terrestrial UMTS numbering system. All S-UMTS specifications are allocated a unique S-UMTS number as
follows:
S-UMTS-n xx.yyy
Where:
• The numbers xx and yyy correspond to the 3GPP-numbering scheme.
• n (n = A, B, C, etc.) denotes the family of S-UMTS specifications.
An S-UMTS system is defined by the combination of a family of S-UMTS specifications and 3GPP specifications, as
follows:
• If an S-UMTS specification exists it takes precedence over the corresponding 3GPP specification (if any). This
precedence rule applies to any references in the corresponding 3GPP specifications.
NOTE 2: Any references to 3GPP specifications within the S-UMTS specifications are not subject to this
precedence rule.
EXAMPLE: An S-UMTS specification may contain specific references to the corresponding 3GPP
specification.
• If an S-UMTS specification does not exist, the corresponding 3GPP specification may or may not apply. The
exact applicability of the complete list of 3GPP specifications shall be defined at a later stage.
The present document is part of the S-UMT sub-part 3 specifications. Sub-part 3 specifications are identified in the title
and can also be identified by the specification number:
• Sub-part 1 specifications have a S-UMTS-G prefix in the title and a sub-part number of "1" (TS 101 851-x-1).
• Sub-part 2 specifications have a S-UMTS-A prefix in the title and a sub-part number of "2" (TS 101 851-x-2).
• Sub-part 3 specifications have a S-UMTS-G enhanced prefix in the title and a sub-part number of
"3" (TS 101 851-x-3).
The sub-part 1 specifications introduce the WCDMA satellite radio interface (ITU-R G-family) specifications for the
third generation (3G) wireless communication systems. It is also based on the WCDMA UTRA FDD radio interface
already standardized in 3GPP. Mobile satellite systems intending to use this interface will address user equipment fully
compatible with 3GPP UTRA FDD WCDMA, with adaptation for agility to the Mobile Satellite Service (MSS)
frequency band.
The sub-part 2 specifications introduce the SW-CDMA satellite radio interface (ITU-R A-family) specifications for
third generation (3G) wireless communication systems. SW-CDMA is based on the adaptation to the satellite
environment of terrestrial WCDMA. The intention is to reuse the same core network and reuse the radio interface
specifications for the Is and Cu interface. Only the Uu interface is adapted to the satellite environment. SW-CDMA
operates in FDD mode with RF channel bandwidth of either 2,350 MHz or 4,700 MHz for each transmission direction.
The sub-part 3 specifications introduce the WCDMA satellite radio interface enhancement (G-family enhancements). It
considers G-family as radio interface basis, adding as option selected enhancing features from ITU-R A and/or C-family
in order to optimize the radio interface over satellite. It is based on the results of the TR 102 278 [i.3] identifying a way
to achieve harmonization between A, C and G-family satellite radio interfaces for IMT-2000 in ITU-R. The G-family
enhancements made of A, C and G features are described in annex A.
The sub-parts 1 and 2 will be withdrawn if the A and C family will be removed from the satellite radio interface list of
IMT-2000 in ITU-R Recommendation M.1850 [i.2] and then, the sub-part 3 will be revised.
ETSI
7 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
1 Scope
The present document defines the Layer 1 transport channels and physical channels used for family G enhanced of the
satellite component of UMTS (S-UMTS-G enhanced).
It is based on the FDD mode of UTRA defined by TS 125 201 [4], TS 125 211 [i.1], TS 125 302 [5] and TS 125 435 [6]
and adapted for operation over satellite transponders.
Furthermore, it specifies enhancing features optimizing the basic G-family radio interface performances over satellite
and new functions.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 101 851-2-3: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 2: Multiplexing and channel coding; Sub-part 3: G-family enhancements
(S-UMTS-G enhanced 25.212)".
[2] ETSI TS 101 851-3-3: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 3: Spreading and modulation; Sub-part 3: G-family enhancements
(S-UMTS-G enhanced 25.213)".
[3] ETSI TS 101 851-4-3: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 4: Physical layer procedures; Sub-part 3: G-family enhancements
(S-UMTS-G enhanced 25.214)".
[4] ETSI TS 125 201: "Universal Mobile Telecommunications System (UMTS); Physical layer -
general description (3GPP TS 25.201)".
[5] ETSI TS 125 302: "Universal Mobile Telecommunications System (UMTS); Services provided by
the physical layer (3GPP TS 25.302)".
[6] ETSI TS 125 435: "Universal Mobile Telecommunications System (UMTS); UTRAN Iub
interface user plane protocols for Common Transport Channel data streams (3GPP TS 25.435)".
[7] ETSI TS 125 427: "Universal Mobile Telecommunications System (UMTS); UTRAN Iur/Iub
interface user plane protocol for DCH data streams (3GPP TS 25.427)".
ETSI
8 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TS 125 211: "Universal Mobile Telecommunications System (UMTS); Physical channels
and mapping of transport channels onto physical channels (FDD) (3GPP TS 25.211)".
[i.2] ITU-R Recommendation M.1850: "Detailed specifications of the satellite radio interfaces of
International Mobile Telecommunications-2000 (IMT-2000)".
[i.3] ETSI TR 102 278: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Considerations on possible harmonization between A, C and G family Satellite
Radio Interface features".
[i.4] ITU-R Recommendation M.1457: "Detailed specifications of the terrestrial radio interfaces of
International Mobile Telecommunications-2000 (IMT-2000)".
[i.5] ETSI TS 101 851-1-1: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 1: Physical channels and mapping of transport channels into physical
channels; Sub-part 1: G-family (S-UMTS-G 25.211)".
[i.6] ETSI TS 101 851-2-1: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 2: Multiplexing and channel coding; Sub-part 1: G-family (S-UMTS-G
25.212)".
[i.7] ETSI TS 101 851-3-1: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 3: Spreading and modulation; Sub-part 1: G-family (S-UMTS-G 25.213)".
[i.8] ETSI TS 101 851-4-1: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 4: Physical layer procedures; Sub-part 1: G-family (S-UMTS-G 25.214)".
[i.9] ETSI TS 101 851-1-2: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 1: Physical channels and mapping of transport channels into physical
channels; Sub-part 2: A-family (S-UMTS-A 25.211)".
[i.10] ETSI TS 101 851-2-2: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 2: Multiplexing and channel coding; Sub-part 2: A-family (S-UMTS-A
25.212)".
[i.11] ETSI TS 101 851-3-2: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 3: Spreading and modulation; Sub-part 2: A-family (S-UMTS-A 25.213)".
[i.12] ETSI TS 101 851-4-2: "Satellite Earth Stations and Systems (SES); Satellite Component of
UMTS/IMT-2000; Part 4: Physical layer procedures; Sub-part 2: A-family (S-UMTS-A 25.214)".
3 Symbols and abbreviations
3.1 Symbols
For the purposes of the present document, the following symbols apply:
N The number of data bits per downlink slot in Data1 field
data1
N The number of data bits per downlink slot in Data2 field (If the slot format does not contain a
data2
Data2 field, N = 0)
data2
ETSI
9 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3GPP 3 Generation Partnership Project
AI Acquisition Indicator
AICH Acquisition Indicator CHannel
AS Access Slot
ASC Access Service Class
BCH Broadcast CHannel
BPSK Binary Phase Shift Keying
CCPCH Common Control Physical CHannel
CCTrCH Coded Composite Transport CHannel
CPICH Common PIlot CHannel
CSICH CPCH Status Indicator CHannel
DCH Dedicated CHannel
DPCCH Dedicated Physical Control CHannel
DPCH Dedicated Physical CHannel
DPDCH Dedicated Physical Data CHannel
DTX Discontinuous Transmission
FACH Forward Access CHannel
FBI FeedBack Information
FDD Frequency Division Duplex
FSW Frame Synchronization Word
GEO Geostationary Earth Orbit
HPPICH High Penetration Paging Indicator CHannel
ICH Indicator CHannel
LEO Low Earth Orbit
MBMS Multimedia Broadcasting and Multicasting Service
MEO Medium Earth Orbit
MICH MBMS Indicator Channel
ML Maximum Likelihood
MSS Mobile Satellite Services
NI MBMS Notification Indicator
P-CCPCH Primary Common Control Physical CHannel
PCH Paging CHannel
PI Page Indicator
PICH Page Indicator CHannel
PRACH Physical Random Access CHannel
PSC Primary Synchronization Code
QPSK Quaternary Phase Shift Keying
RACH Random Access CHannel
RF Radio Frequency
S-CCPCH Secondary Common Control Physical CHannel
SCH Synchronization CHannel
SF Spreading Factor
SFN System Frame Number
SRI Satellite Radio Interface
SSC Secondary Synchronization Code
SSDT Site Selection Diversity Transmission
S-UMTS Satellite component of the Universal Mobile Telecommunication System
TFCI Transport Format Combination Indicator
TPC Transmit Power Control
TrCH Transport CHannel
TTI Transmission Time Interval
T-UMTS Terrestrial UMTS
UE User Equipment
UL UpLink
UMTS Universal Mobile Telecommunication System
USRAN UMTS Satellite Radio Access Network
UTRA UMTS Terrestrial Radio Access
ETSI
10 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
UW Unique Word
WCDMA Wideband Code Division Multiple Access
4 Services offered to higher layers
4.1 Transport channels
Transport channels are services offered by Layer 1 to the higher layers. General concepts about transport channels are
described in TS 125 302 [5].
A transport channel is defined by how and with what characteristics data is transferred over the air interface. A general
classification of transport channels is into two groups:
• dedicated channels, using inherent addressing of UE;
• common channels, using explicit addressing of UE if addressing is needed.
4.1.1 Dedicated transport channels
There exists only one type of dedicated transport channel, the Dedicated CHannel (DCH).
4.1.1.1 Dedicated CHannel (DCH)
The Dedicated CHannel (DCH) is a downlink or uplink transport channel. The DCH is transmitted over the entire spot
or over only a part of the spot using e.g. beam-forming antennas.
4.1.2 Common transport channels
There are four types of common transport channels:
• BCH;
• FACH;
• PCH; and
• RACH.
4.1.2.1 Broadcast CHannel (BCH)
The Broadcast CHannel (BCH) is a downlink transport channel that is used to broadcast system- and spot-specific
information. The BCH is always transmitted over the entire spot and has a single transport format.
4.1.2.2 Forward Access CHannel (FACH)
The Forward Access CHannel (FACH) is a downlink transport channel. The FACH is transmitted over the entire spot.
The FACH can be transmitted using power setting described in TS 125 435 [6], i.e. with "Transmit Power Level" of the
"FACH DATA FRAME" Frame Protocol message.
4.1.2.3 Paging CHannel (PCH)
The Paging CHannel (PCH) is a downlink transport channel. The PCH is always transmitted over the entire spot. The
transmission of the PCH is associated with the transmission of physical-layer generated Paging Indicators, to support
efficient sleep-mode procedures.
ETSI
11 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
4.1.2.4 Random Access CHannel (RACH)
The Random Access CHannel (RACH) is an uplink transport channel. The RACH is always received from the entire
spot. The RACH is characterized by a collision risk and by being transmitted using open loop power control.
4.2 Indicators
Indicators are means of fast low-level signalling entities which are transmitted without using information blocks sent
over transport channels. The meaning of indicators is specific to the type of indicator.
The indicators defined in the present document are:
• Acquisition Indicator (AI);
• Page Indicator (PI); and
• MBMS Notification Indicator (NI).
Indicators may be either Boolean (two-valued) or three-valued. Their mapping to indicator channels is channel specific.
Indicators are transmitted on those physical channels that are Indicator CHannels (ICH).
5 Physical channels and physical signals
Physical channels are defined by a specific carrier frequency, scrambling code, channelization code (optional), time
start and stop (giving a duration) and, on the uplink, relative phase (0 or π/2). Scrambling and channelization codes and
modulating chip rate are specified in TS 101 851-3-3 [2]. Time durations are defined by start and stop instants,
measured in integer multiples of chips. Suitable multiples of chips also used in specification are:
Radio frame: A radio frame is a processing duration which consists of 15 slots. The length of a radio
frame corresponds to 38 400 chips.
Slot: A slot is a duration which consists of fields containing bits. The length of a slot corresponds
to 2 560 chips.
The default time duration for a physical channel is continuous from the instant when it is started to the instant when it is
stopped. Physical channels that are not continuous will be explicitly described.
Transport channels are described (in more abstract higher layer models of the physical layer) as being capable of being
mapped to physical channels. Within the physical layer itself the exact mapping is from a Composite Coded Transport
CHannel (CCTrCH) to the data part of a physical channel. In addition to data parts there also exist channel control parts
and physical signals.
5.1 Physical signals
Physical signals are entities with the same basic on-air attributes as physical channels but do not have transport channels
or indicators mapped to them. Physical signals may be associated with physical channels in order to support the
function of physical channels.
5.2 Uplink physical channels
5.2.1 Dedicated uplink physical channels
There are three types of uplink dedicated physical channels, the uplink Dedicated Physical Data CHannel (uplink
DPDCH) and the uplink Dedicated Physical Control CHannel (uplink DPCCH).
The DPDCH and DPCCH are I/Q code multiplexed (see TS 101 851-3-3 [2]).
ETSI
12 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
The uplink DPDCH is used to carry the DCH transport channel. There may be zero, one, or several uplink DPDCHs on
each radio link.
The uplink DPCCH is used to carry control information generated at Layer 1. The Layer 1 control information consists
of known pilot bits to support channel estimation for coherent detection, Transmit Power-Control (TPC) commands,
FeedBack Information (FBI), and an optional Transport Format Combination Indicator (TFCI). The Transport-Format
Combination Indicator informs the receiver about the instantaneous transport format combination of the transport
channels mapped to the simultaneously transmitted uplink DPDCH radio frame. There is one and only one uplink
DPCCH on each radio link.
Figure 1 shows the frame structure of the uplink DPDCH and the uplink DPCCH. Each radio frame of length 10 ms is
split into 15 slots, each of length T = 2 560 chips, corresponding to one power-control period. The DPDCH and
slot
DPCCH are always frame aligned with each other.
In Optional mode C, a radio frame corresponds to one power-control period.
Data
DPDCH
N bits
data
k
T = 2560 chips, N = 10*2 bits (k=0.6)
slot data
FBI TPC
Pilot TFCI
DPCCH
N bits N bits
N bits N bits FBI TPC
pilot TFCI
T = 2560 chips, 10 bits
slot
Slot #0 Slot #1 Slot #i Slot #14
1 radio frame: T = 10 ms
f
Figure 1: Frame structure for uplink DPDCH/DPCCH
The parameter k in figure 1 determines the number of bits per uplink DPDCH slot. It is related to the spreading factor
k
SF of the DPDCH as SF = 256 / 2 . The DPDCH spreading factor may range from 256 down to 4. The spreading factor
of the uplink DPCCH is always equal to 256, i.e. there are 10 bits per uplink DPCCH slot.
The exact number of bits of the uplink DPDCH and the different uplink DPCCH fields (N , N , N and N )
pilot TFCI FBI TPC
is given by tables 1 and 2. What slot format to use is configured by higher layers and can also be reconfigured by higher
layers.
The channel bit and symbol rates given in tables 1 and 2 are the rates immediately before spreading. The pilot patterns
are given in tables 3 and 4, the TPC bit pattern is given in table 5.
In Optional mode C, the tables 2a and 4a are applied instead of tables 2 and 4, respectively.
The FBI bits are used to support techniques requiring feedback from the UE to the USRAN Access Point, including
Spot Selection Diversity Transmission (SSDT). The structure of the FBI field is shown in figure 2 and described below.
S field
N
FBI
Figure 2: FBI field
The S field is used for SSDT signalling. It consists of 0 bit, 1 bit or 2 bits. The total FBI field size N is given by
FBI
table 2. If total FBI field is not filled with S field, FBI field shall be filled with "1". The use of the FBI fields is
described in detail in TS 101 851-4-3 [3].
ETSI
13 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Table 1: DPDCH fields
Slot Format #i Channel Bit Rate Channel Symbol SF Bits/Frame Bits/Slot N
data
(kbps) Rate (ksps)
0 15 15 256 150 10 10
1 30 30 128 300 20 20
2 60 60 64 600 40 40
3 120 120 32 1 200 80 80
4 240 240 16 2 400 160 160
5 480 480 8 4 800 320 320
6 960 960 4 9 600 640 640
There are two types of uplink dedicated physical channels; those that include TFCI (e.g. for several simultaneous
services) and those that do not include TFCI (e.g. for fixed-rate services). These types are reflected by the duplicated
rows of table 2. It is the USRAN that determines if a TFCI should be transmitted and it is mandatory for all UEs to
support the use of TFCI in the uplink. The mapping of TFCI bits onto slots is described in TS 101 851-2-3 [1].
In compressed mode, DPCCH slot formats with TFCI fields are changed. There are two possible compressed slot
formats for each normal slot format. They are labelled A and B and the selection between them is dependent on the
number of slots that are transmitted in each frame in compressed mode.
Table 2: DPCCH fields
Slot Channel Bit Channel SF Bits/ Bits/ N N N N Transmitted
pilot TPC TFCI FBI
Format Rate (kbps) Symbol Rate Frame Slot slots per radio
#i (ksps) frame
0 15 15 256 150 10 6 2 2 0 15
0A 15 15 256 150 10 5 2 3 0 10 to 14
0B 15 15 256 150 10 4 2 4 0 8 to 9
1 15 15 256 150 10 8 2 0 0 8 to 15
2 15 15 256 150 10 5 2 2 1 15
2A 15 15 256 150 10 4 2 3 1 10 to 14
2B 15 15 256 150 10 3 2 4 1 8 to 9
3 15 15 256 150 10 7 2 0 1 8 to 15
4 15 15 256 150 10 6 2 0 2 8 to 15
5 15 15 256 150 10 5 1 2 2 15
5A 15 15 256 150 10 4 1 3 2 10 to 14
5B 15 15 256 150 10 3 1 4 2 8 to 9

Table 2a: DPCCH fields (Optional mode C)
Slot Channel Bit Channel SF Bits/ Bits/ N N N N Transmitted
pilot TPC TFCI FBI
Format Rate (kbps) Symbol Rate Frame Slot slots per radio
#i (ksps) frame
0 15 15 256 150 10 7 1 2 0 15
0A 15 15 256 150 10 6 1 3 0 10 to 14
0B 15 15 256 150 10 7 1 4 0 8 to 9
1 15 15 256 150 10 9 1 0 0 8 to 15
2 15 15 256 150 10 6 1 2 1 15
2A 15 15 256 150 10 5 1 3 1 10 to 14
2B 15 15 256 150 10 4 1 4 1 8 to 9
3 15 15 256 150 10 8 1 0 1 8 to 15

The pilot bit patterns are described in tables 3, 4 and 4a. The shadowed column part of pilot bit pattern is defined as
FSW and FSWs can be used to confirm frame synchronization. (The value of the pilot bit pattern other than FSWs shall
be "1".)
ETSI
14 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Table 3: Pilot bit patterns for uplink DPCCH with N = 3, 4, 5 and 6
pilot
N = 3 N = 4 N = 5 N = 6
pilot pilot pilot pilot
Bit # 0 1 2 0 1 2 3 0 1 2 3 4 0 1 2 3 4 5
Slot #0 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0
1 0 0 1 1 0 0 1 0 0 1 1 0 1 0 0 1 1 0
2 0 1 1 1 0 1 1 0 1 1 0 1 1 0 1 1 0 1
3 0 0 1 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0
4 1 0 1 1 1 0 1 1 0 1 0 1 1 1 0 1 0 1
5 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0
6 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 1 0 0
7 1 0 1 1 1 0 1 1 0 1 0 0 1 1 0 1 0 0
8 0 1 1 1 0 1 1 0 1 1 1 0 1 0 1 1 1 0
9 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
10 0 1 1 1 0 1 1 0 1 1 0 1 1 0 1 1 0 1
1 0 1 0 1 0 1 1 1 0 1 1
11 1 1 1 1 1 1
12 1 0 1 1 1 0 1 1 0 1 0 0 1 1 0 1 0 0
13 0 0 1 1 0 0 1 0 0 1 1 1 1 0 0 1 1 1
14 0 0 1 1 0 0 1 0 0 1 1 1 1 0 0 1 1 1

Table 4: Pilot bit patterns for uplink DPCCH with N = 7 and 8
pilot
N = 7 N = 8
pilot pilot
Bit # 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7
Slot #0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0
1 1 0 0 1 1 0 1 1 0 1 0 1 1 1 0
2 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1
3 1 0 0 1 0 0 1 1 0 1 0 1 0 1 0
4 1 1 0 1 0 1 1 1 1 1 0 1 0 1 1
1 1 1 0 1 1 1 0
5 1 1 1 1 1 1 1
6 1 1 1 1 0 0 1 1 1 1 1 1 0 1 0
7 1 1 0 1 0 0 1 1 1 1 0 1 0 1 0
8 1 0 1 1 1 0 1 1 0 1 1 1 1 1 0
9 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
10 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1
11 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1
12 1 1 0 1 0 0 1 1 1 1 0 1 0 1 0
13 1 0 0 1 1 1 1 1 0 1 0 1 1 1 1
14 1 0 0 1 1 1 1 1 0 1 0 1 1 1 1

Table 4a: Pilot bit patterns for uplink DPCCH with N = 9 (Optional mode C)
pilot
N = 9
pilot
Bit # 0 1 2 3 4 5 6 7 8
Slot #0 1 1 1 1 1 1 1 0 1
1 1 0 1 0 1 1 1 0 1
2 1 0 1 1 1 0 1 1 1
3 1 0 1 0 1 0 1 0 1
4 1 1 1 0 1 0 1 1 1
5 1 1 1 1 1 1 1 0 1
6 1 1 1 1 1 0 1 0 1
7 1 1 1 0 1 0 1 0 1
8 1 0 1 1 1 1 1 0 1
9 1 1 1 1 1 1 1 1 1
10 1 0 1 1 1 0 1 1 1
11 1 1 1 0 1 1 1 1 1
12 1 1 1 0 1 0 1 0 1
13 1 0 1 0 1 1 1 1 1
14 1 0 1 0 1 1 1 1 1
The relationship between the TPC bit pattern and transmitter power control command is presented in table 5.
ETSI
15 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Table 5: TPC Bit Pattern
TPC Bit Pattern Transmitter power
control command
N = 1 N = 2
TPC TPC
1 11 1
0 00 0
Multi-code operation is possible for the uplink dedicated physical channels. When multi-code transmission is used,
several parallel DPDCH are transmitted using different channelization codes, see TS 101 851-3-3 [2]. However, there is
only one DPCCH per radio link.
A period of uplink DPCCH transmission prior to the start of the uplink DPDCH transmission (uplink DPCCH power
control preamble) shall be used for initialization of a DCH. The length of the power control preamble is a higher layer
parameter, N , signalled by the network TS 101 851-4-3 [3]. The UL DPCCH shall take the same slot format in the
pcp
power control preamble as afterwards, as given in table 2. When N > 0 the pilot patterns of tables 3, 4 and 4a shall be
pcp
used. The timing of the power control preamble is described in TS 101 851-4-3 [3]. The TFCI field is filled with
"0" bits.
5.2.2 Common uplink physical channels
5.2.2.1 Physical Random Access CHannel (PRACH)
The Physical Random Access CHannel (PRACH) is used to carry the RACH.
5.2.2.1.1 Overall structure of random-access transmission
The random-access transmission is based on a Slotted ALOHA approach with fast acquisition indication. The UE can
start the random-access transmission at the beginning of a number of well-defined time intervals, denoted access slots.
There are 15 access slots per two frames and they are spaced 5 120 chips apart, see figure 3. The timing of the access
slots and the acquisition indication is described in clause 7.3. Information on what access slots are available for
random-access transmission is given by higher layers.
radio frame: 10 ms radio frame: 10 ms
5120 chips
Access slot #0 #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14
Random Access Transmission
Random Access Transmission
Random Access Transmission
Random Access Transmission
Figure 3: RACH access slot numbers and their spacing
The structure of the random-access transmission is shown in figure 4. The random-access transmission consists of one
or several preambles of length 4 096 chips and a message of length 10 ms or 20 ms.
ETSI
16 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
Preamble Preamble Preamble
Message part
4096 chips
10 ms (one radio frame)
Preamble Preamble Preamble
Message part
4096 chips
20 ms (two radio frames)
Figure 4: Structure of the random-access transmission
In Optional mode C, the following is applied:
The random-access transmission is based on an ALOHA approach with fast acquisition indication. The UE can start the
random-access transmission at the beginning of a number of well-defined time intervals, denoted access access frame.
Each access frame has a length of two radio frames. Each access frame can consist of two sub-access frames, even
sub-access frame and odd sub-access frame, see figure 3a. The timing of the access frames and the acquisition
indication is described in clause 7.3. Information on what access slots are available for random-access transmission is
given by higher layers.
radio frame: 10 ms
radio frame: 10 ms
Access frame
Even sub-access frame Odd sub-access frame
Random Access Transmission
Random Access Transmission
Figure 4a: Structure of the random-access transmission (Optional mode C)
The structure of the random-access transmission is shown in figure 4a. The random-access transmission consists of one
preamble of Nsp sub-preambles and a message of length 10 ms or 20 ms.

Preamble Message part
10 ms (one radio frame)
4096×Nsp chips
Preamble Message part
20 ms (two radio frames)
4096×Nsp chips
Figure 4b: Structure of the random-access transmission (Optional mode C)
5.2.2.1.2 RACH preamble part
Each preamble is of length 4 096 chips and consists of 256 repetitions of a signature of length 16 chips. There are a
maximum of 16 available signatures, see TS 101 851-3-3 [2] for more details.
ETSI
17 ETSI TS 101 851-1-3 V3.1.1 (2011-09)
In Optional mode C, the following is applied: the preamble is of length Nsp × 4 096 chips and consists of Nsp
sub-preambles. The value of Nsp (>0) is provided by high layers. The sub-preamble is of length 4 096 chips and
consists of 256 repetitions of a signature of length 16 chips. There are a maximum of 16 available signatures, see [2] for
more detail. Every sub-preamble has the identical length, signature and scrambling code. The last sub-preamble code is
a conjugate of the code rate in the previous sub-preamble, see [2] for more details.
5.2.2.1.3 RACH message part
Figure 5 shows the structure of the random-access message part radio frame. The 10 ms message part radio frame is
split into 15 slots, each of length T = 2 560 chips. Each slot consists of two parts, a data part to which the RACH
slot
transport channel is mapped and a control part that carries Layer 1 control information. The data and control parts are
transmitted in parallel. A 10 ms message part consists of one message part radio frame, while a 20 ms message part
consists of two consecutive 10 ms message part radio frames. The message part length is equal to the Transmission
Time Interval of the RACH Transport channel in use. This TTI length is configured by higher layers.
k
The data part consists of 10 × 2 bits, where k = 0, 1, 2, 3. This corresponds to a spreading factor of 256, 128, 64 and 32
respectively for the message data part.
The control part consists of 8 known pilot bits to support channel estimation for coherent detection and 2 TFCI bits.
This corresponds to a spreading factor of 256 for the message control part. The pilot bit pattern is described in table 8.
The total number of TFCI bits in the random-access message is 15 × 2 = 30. The TFCI of a radio frame indicates the
transport format of the RACH transport channel mapped to the simultaneously transmitted message part radio frame. In
case of a 20 ms PRACH message part, the TFCI is re
...