ETSI TS 144 003 V13.0.0 (2016-01)

ETSI TS 1144 003 V13.0.0 (201616-01)






TECHNICAL SPECIFICATIONION
Digital cellular telecommmmunications system (Phase e 2+) (GSM);
Mobile Station - BBase Station System (MS - BBSS)
Interface Channel Sl Structures and Access Capabilitiespa
(3GPP TS 44.0.003 version 13.0.0 Release 13 13)

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3GPP TS 44.003 version 13.0.0 Release 13 1 ETSI TS 144 003 V13.0.0 (2016-01)



Reference
RTS/TSGG-0244003vd00
Keywords
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3GPP TS 44.003 version 13.0.0 Release 13 2 ETSI TS 144 003 V13.0.0 (2016-01)
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 (https://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 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 44.003 version 13.0.0 Release 13 3 ETSI TS 144 003 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Abbreviations . 5
4 General definitions . 5
5 Channel types and their use: Traffic channels and user channels . 6
5.1 User channels . 6
5.2 Bm Channel . 6
5.3 Lm Channels . 6
6 Channel types and their use: Packet data traffic channels . 7
7 Channel types and their use: Control channels . 7
7.1 Control channel types . 7
7.1.1 Broadcast Control Channel . 7
7.1.2 Common Control Channel . 8
7.1.3 Dedicated Control Channel (DCCH) . 8
8 BS access capability . 9
9 Channel configurations. 10
9.1 Mandatory capabilities . 11
Annex A (informative): Change History . 12
History . 13

ETSI

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3GPP TS 44.003 version 13.0.0 Release 13 4 ETSI TS 144 003 V13.0.0 (2016-01)
Foreword
rd
This Technical Specification 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 44.003 version 13.0.0 Release 13 5 ETSI TS 144 003 V13.0.0 (2016-01)
1 Scope
The present document defines limited sets of channel types, access capabilities and channel configurations at reference
point Um (radio interface).
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 22.060: "General Packet Radio Service (GPRS); Service description; Stage 1".
[3] 3GPP TS 44.060: "General Packet Radio Service (GPRS); Mobile Station (MS) - Base Station
System (BSS) interface; Radio Link Control/Medium Access Control (RLC/MAC) protocol".
[4] 3GPP TS 45.002: "Multiplexing and Multiple Access on the Radio Path".
3 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 apply.
4 General definitions
A channel represents a specified portion of the information-carrying capacity of an interface.
Channels are classified by channel types, which have common characteristics. Channel types appearing on the radio
interface are specified in clauses 3 and 4.
At a given time, the complete interface between a Base Station and the set of Mobile Stations in relation corresponds to
some interface structure. The interface structure may change in time. The number of possible different such interface
structures can be large. The BS access capability is a description of all the possible interface structures of the considered
BS. BS access capabilities are specified in sub-clause 8.
At a given moment, the channel configuration of a Mobile Station is the interface structure this Mobile Station actually
uses to transmit information to or receive information from the Base Station. The channel configuration may change in
time. A limited number of channel configurations are identified, and are specified in sub-clause 9.
A Mobile Station access capability is the description of the set of its possible channel configurations. MS access
capabilities are specified in sub-clause 8.
ETSI

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3GPP TS 44.003 version 13.0.0 Release 13 6 ETSI TS 144 003 V13.0.0 (2016-01)
5 Channel types and their use: Traffic channels and
user channels
5.1 User channels
User channels are intended to carry a wide variety of user information streams. A distinguishing characteristic is that
user channels do not carry signalling information for Connection Management (CM), Mobility Management (MM) or
Radio Resource (RR) management. This signalling information is carried over other types of channels, namely the
control channels.
User channels may be used to provide access to the PLMN and the networks it permits access to.
Different types of user channels are distinguished by their rates.
5.2 Bm Channel
A Bm channel is a bi-directional or uni-directional user channel able to carry:
- a 13 kbit/s rate bit stream with an error structure and a transmission delay compatible with some grade of
service, intended to carry voice encoded according to Technical Specifications in 3GPP TS 06-series; or
- a bit stream at a rate of 14,5 kbit/s, 12 kbit/s, 6 kbit/s or 3,6 kbit/s, with an error structure and a transmission
delay adapted to a wider range of services, including data transmission; or other kinds of bit stream adapted to a
wider range of services (for further study).
User information streams are carried on the Bm channel on a dedicated, alternate (within one call or as separate calls),
or simultaneous basis, consistent with the Bm channel carrying capability. The following are samples of user
information streams:
i) voice encoded at 13 kbit/s according to Technical Specifications in 3GPP TS 06-series; and
ii) data information corresponding to circuit switching user classes of services at bit rates compatible with the
channel capability.
A Bi-directional Bm Channel uses the radio resources referred to as TCH/F. Bi-directional downlink Bm Channel uses
the radio resources referred to as TCH/FD. The Uni-directional Bm Channel is only defined in downlink direction.
Traffic channels (TCH) are fixed physical gross rate channels, accompanied with timing (see 3GPP TS 45.002).
5.3 Lm Channels
A Lm channel is a user channel with a carrying capability lower than a Bm channel.
A Lm channel is a user channel able to carry:
- some bit stream to be defined with an error structure and a transmission delay compatible with some grade of
service, intended to carr
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