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TECHNICAL REPORT
Universal Mobile Telecommunications System (UMTS);
Deployment aspects
(3GPP TR 25.943 version 15.0.0 Release 15)
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3GPP TR 25.943 version 15.0.0 Release 15 1 ETSI TR 125 943 V15.0.0 (2018-07)
Reference
RTR/TSGR-0425943vf00
Keywords
UMTS
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3GPP TR 25.943 version 15.0.0 Release 15 2 ETSI TR 125 943 V15.0.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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
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Foreword
This Technical Report (TR) 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
.
Modal verbs terminology
In the present document "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.
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3GPP TR 25.943 version 15.0.0 Release 15 3 ETSI TR 125 943 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 5
3.1 Definitions . 5
3.2 Symbols . 5
3.3 Abbreviations . 5
4 General . 5
5 Channel model descriptions . 6
5.1 Typical Urban channel model (Tux) . 7
5.2 Rural Area channel model (Rax) . 7
5.3 Hilly Terrain channel model (HTx) . 8
Annex A: The COST 259 Channel Model . 9
A.1 Background . 9
A.2 Model descriptions . 9
A.3 Reduced complexity models. 10
Annex B: Example of simplified model using other time resolution . 12
Annex C: Change history . 13
History . 14
ETSI
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3GPP TR 25.943 version 15.0.0 Release 15 4 ETSI TR 125 943 V15.0.0 (2018-07)
Foreword
This Technical Report has been produced by the 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 this TS, 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 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 TR 25.943 version 15.0.0 Release 15 5 ETSI TR 125 943 V15.0.0 (2018-07)
1 Scope
The present document establishes channel models to be used for deployment evaluation.
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] L.M. Correia, ed., Wireless flexible personalized communications – COST 259: European co-
operation in mobile radio research, John Wiley & Sons 2001.
[2] GSM 05.05, “Digital cellular telecommunications system (Phase 2+); Radio transmission and
reception”
3 Definitions, symbols and abbreviations
3.1 Definitions
(void)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
στ R.M.S. delay spread.
Fd Maximum Doppler shift
fs Doppler frequency of the direct path, given by its direction relative to the mobile direction of
movement
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
COST European Co-operation in the field of Scientific and Technical research
GSM Global System for Mobile communications
HT Hilly Terrain
RA Rural Area
TU Typical Urban
UMTS Universal Mobile Telecommunications System
4 General
The channel models have been chosen as simplifications, or typical realisations of the COST 259 model [1] that is
described in more detail in Annex A.
A large number of paths (20) in each model ensure that the correlation properties in the frequency domain are realistic.
Path powers follow the exponential channel shapes in the COST 259 model. The delay spreads for each model are close
to expected medians when applying the COST 259 model in reasonably sized macrocells. In the rural model a direct
ETSI
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3GPP TR 25.943 version 15.0.0 Release 15 6 ETSI TR 125 943 V15.0.0 (2018-07)
path is present, resulting in Rice-type fading when filtered to wideband channels. The hilly terrain model consists of
two clusters, a typical situation in these environments.
With the chosen parameters the models will be quite similar to the GSM channel models [2], after filtering to the GSM
bandwidth.
In Section 5, the channel models are specified explicitly. The tap delays have been determined by generating 20
[ ]
0,4⋅ σ
τ
independent identically distributed values from a uniform distribution in the interval , where στ is the rms
delay spread. For the Hilly Terrain channel 10 paths have been generated for each cluster and for the Rural Area model
there is a total of 10 taps. Relative powers have then been calculated using the channel shapes in Annex A, Table A.3.
The channels have been normalised so that the total power in each channel is equal to one.
5 Channel model descriptions
Radio wave propagation in the mobile environment can be described by multiple paths which arise due to reflection and
scattering in the mobile environment. Approximating these paths as a finite number of N distinct paths, the impulse
response for the radio channel may be written as:
N
h(τ ) = a δ (τ )
i i
i
which is the well known tapped-delay line model. Due to scattering of each wave in the vicinity of a moving mobile,
a
i
each path will be the superposition of a large number of scattered waves with approximately the same delay. This
a
i
superpositi
...