ETSI TR 145 913 V13.0.0 (2016-01)

ETSI TR 1145 913 V13.0.0 (201616-01)






TECHNICAL REPORT
Digital cellular telecocommunications system (Phahase 2+);
Optimized transnsmit pulse shape for downnlinklin
Enhanced Generaal l Packet Radio Service (EGPRPRS2-B)
(3GPP TR 45.9.913 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

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3GPP TR 45.913 version 13.0.0 Release 13 1 ETSI TR 145 913 V13.0.0 (2016-01)



Reference
RTR/TSGG-0145913vd00
Keywords
GSM
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3GPP TR 45.913 version 13.0.0 Release 13 2 ETSI TR 145 913 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 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
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 TR 45.913 version 13.0.0 Release 13 3 ETSI TR 145 913 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
Introduction . 6
1 Scope . 7
2 References . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Objectives . 10
4.1 Performance objectives . 10
4.1.1 Data throughput improvements . 10
4.2 Compatibility objectives . 10
4.2.1 Maintenance of voice quality . 10
4.2.2 Data throughput . 10
4.2.3 Implementation impacts to new Mobile Stations . 10
4.2.4 Implementation impacts to BSS . 10
4.2.5 Impacts to network planning . 10
4.2.6 Compatibility with Multi-User Reusing-One-Slot (MUROS) . 11
5 Study item pre-requisites . 12
5.1 Introduction . 12
5.2 Preliminary boundary conditions for pulse shape optimisation . 12
5.2.1 Introduction. 12
5.2.2 Time domain . 12
5.2.3 Frequency domain . 12
5.3 Network configurations for pulse shape evaluation . 12
5.4 Legacy MS Rx filter working assumption . 14
5.5 Legacy MS type . 14
6 Network level analysis . 15
6.1 Introduction . 15
6.2 Network scenarios and simulation assumptions . 15
6.2.1 Resource allocation . 15
6.3 Link to system interface . 16
6.4 Interference statistics . 16
6.5 Interference profile for link level analysis . 17
6.5.1 Results . 17
7 Pulse shape optimisation . 18
7.1 Introduction . 18
7.2 Candidate pulse shapes from [4] . 18
7.2.1 Optimisation assumptions . 18
7.2.2 Results . 18
7.2.2.1 Spectrum . 18
7.2.2.2 Adjacent channel protection . 20
8 Link level studies . 20
8.1 Introduction . 20
8.2 Link to system interface . 21
8.2.1 Introduction. 21
8.2.2 Simulation assumptions . 21
ETSI

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8.2.3 Link level performance . 21
8.2.4. Legacy voice receiver . 23
8.2.4.1 Front-end filter . 23
8.2.5 EGPRS2 receiver . 23
8.2.5.1 Introduction . 23
8.2.5.3 Candidate pulse #2 . 24
8.2.5.4 Candidate pulse #3 . 27
8.2.5.5 Receiver noise . 30
8.2.5.6 First Stage Mapping (CIR to BER) . 30
8.2.5.7 Second Stage Mapping (BER to BLER) . 32
8.2.5.8 Second Stage Mapping for Non-hopping Channel . 36
9 System level studies . 40
9.1 Introduction . 40
9.2 System Performance Evaluation . 40
9.2.1 Evaluation method . 40
9.2.2 System performance results . 40
9.2.2.1 Evaluation method . 40
9.2.2.2 Impact on speech quality . 42
9.2.2.3 Impact on data throughput . 44
10 Summary . 47
11 Conclusion . 49
Annex A: Candidate pulse shape coefficients . 50
A.1: Candidate pulse shapes from [4] . 50
Annex B: Network statistics . 52
B.1 CDFs for Scenario A . 52
B.2 CDFs for Scenario B . 53
B.3 CDFs for Scenario C . 55
B.4 CDFs for Scenario D . 56
B.5 Noise CDFs for all scenarios . 58
Annex C: Change history . 59
History . 60

ETSI

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3GPP TR 45.913 version 13.0.0 Release 13 5 ETSI TR 145 913 V13.0.0 (2016-01)
Foreword
rd
This Technical Report 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 TR 45.913 version 13.0.0 Release 13 6 ETSI TR 145 913 V13.0.0 (2016-01)
Introduction
The EGPRS2-B feature has been included into GERAN Rel-7 with the legacy GMSK pulse shape. This pulse shape
yields good performance and can be used without any requirements on the operator network scenario.
Initial analysis have shown that in certain network scenarios, a spectrally wider pulse shape can improve data
throughput performance further.
To obtain superior data throughput performance, investigation of a wider pulse shape is needed, including the network
scenarios that will benefit from a wider pulse shape. Selection of either the legacy pulse shape or the new pulse shape
will be under operator control.
It is not clear to what degree the current spectral mask can be widened without causing a detrimental impact on legacy
mobile stations in these networks. It is also not clear if a spectral mask relaxation is dependent on the modulation
transmitted or whether it can be assumed to be applicable for all modulations. It is important to continue to improve the
GERAN system performance with new features, and as such it is relevant that this topic is carefully and independently
studied.
ETSI

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3GPP TR 45.913 version 13.0.0 Release 13 7 ETSI TR 145 913 V13.0.0 (2016-01)
1 Scope
The present document is an output of the 3GPP study item "Optimized Transmit Pulse Shape for Downlink EGPRS2-B"
("WIDER") [2], the objective of which is to optimise pulse shapes based on optimization criteria to be agreed by TSG
GERAN WG1, and provide an evaluation of the optimized pulse shapes in a similar manner as was used in the SAIC
feasibility study TR 45.903 [3].
ETSI

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3GPP TR 45.913 version 13.0.0 Release 13 8 ETSI TR 145 913 V13.0.0 (2016-01)
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 TDoc GP-072026: "WID Optimized Transmit Pulse Shape for Downlink EGPRS2-B".
[3] 3GPP TR 45.903: "Feasibility Study on Single Antenna Interference Cancellation (SAIC) for
GSM networks".
[4] "Candidate Pulse Shapes for WIDER", Nokia Siemens Networks & Nokia Corporation, 3GPP
GERAN Teleconference #3 on WIDER.
[5] 3GPP TDoc SMG2 EDGE 2E99-017: "Reference Models for Nonlinear Amplifiers and Phase
Noise for Evaluation of EDGE Radio Performance", ETSI SMG2 EDGE Workshop, Toulouse
(France), 2-4 March 1999.
[6] AHG1-080111: "A link to system interface methodology, Nokia Siemens Networks & Nokia
Corporation".
[7] 3GPP TR 45.913 (V1.0.0): "Optimized transmit pulse shape for downlink Enhanced General
Packet Radio Service (EGPRS2-B)".
ETSI

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3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A
term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].
3.2 Symbols
For the purposes of the present document, the following symbols apply:
µ mean of the uncoded BER
σ variance of the uncoded BER
C/I Carrier to Interference Ratio
C/I1 Carrier to First (Strongest) Interferer Ratio

3.3 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905 [1].
ACI Adjacent Channel Interference
ACP Adjacent Channel Protection
AFS Adaptive Multi-Rate Full Rate Speech
AMR Adaptive Multi-Rate
AWGN Average White Gaussian Noise
BCCH Broadcast Control Channel
BER Bit Error Rate
BQC Bad Quality Call
BSS Base Station Subsystem
BTS Base Tranceiver Station
CCI Co-channel Interference
CDF Cumulative Distribution Function
CIR, C/I Carrier-to-Interference Ratio
CS Circuit Switched
DARP Downlink Advanced Receiver Performance
DL Downlink
DTS DARP Test Scenario
DTX Discontinuous Transmission
EGPRS2 EDGE General Packet Radio Service 2
EGPRS2-B EGPRS2 Level B
FER Frame Erasure Rate
FTP File transfer Protocol
GMSK Gaussian Minimum Shift Keying
LGMSK Linearised GMSK
MCL Minimum Coupling Loss
MS Mobile Station
MUROS Multi-User Reusing One Slot
PA Power Amplifier
PDTCH Packet Data Traffic Channel
PS Packet Switched
RRC Root Raised Cosine
SAIC Single Antenna Interference Cancellation
SID Silence Indicator Description
TCH Traffic Channel
TRX Transceiver
ETSI

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TDMA Time Division Multiple Access
UMTS Universal Mobile Telecommunication System
UL Uplink
4 Objectives
4.1 Performance objectives
4.1.1 Data throughput improvements
The objective is to further enhance the data throughput of EGPRS2-B on the downlink.
4.2 Compatibility objectives
4.2.1 Maintenance of voice quality
The introduction of the wide bandwidth pulse should not decrease voice quality as perceived by the user.
The criteria for minimum call quality shall be:
1st Criterion: blocked calls < 2 %
2nd Criterion: satisfied user criterion fulfilled:
• average call FER < 1 % for at least 95 % users in case of network scenarios WIDER-2 and WIDER-3 (see
section 5.3);
average call FER < 2 % for at least 95 % users in cas e of network scenarios WIDER-1 (see section 5.3).
4.2.2 Data throughput
The introduction of the wide bandwidth pulse shall increase overall network throughput.
4.2.3 Implementation impacts to new Mobile Stations
The introduction of the wide bandwidth pulse should change MS hardware as little as possible.
4.2.4 Implementation impacts to BSS
The introduction of the wide bandwidth pulse should change BSS hardware as little as possible.
4.2.5 Impacts to network planning
Criteria for definition of minimum call quality performance for this objective is defined in section 4.2.1.
The study shall take into consideration the usage of wide pulse shape at the band edge, at the edge of an operator"s band
allocation and in country border regions where no frequency coordination are in place.
The wide pulse is expected to fulfil the same adjacent channel protection requirements as the linearised GMSK pulse at
the 400 kHz offset and higher (see Section 5.2.3).
When EGPRS2-B is used on a frequency which is adjacent (at a 200 kHz offset) to a frequency which is uncoordinated
(see above), then the linearised GMSK pulse shall be used.
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4.2.6 Compatibility with Multi-User Reusing-One-Slot (MUROS)
The feature Optimized Transmit Pulse Shape for Downlink EGPRS2-B (WIDER) and the feature Multi-User Reusing-
One-Slot (MUROS) will be studied independently but that compatibility of both features will be investigated after
completion of the feasibility studies and before the corresponding work items are agreed.
ETSI

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5 Study item pre-requisites
5.1 Introduction
Pre-requisites to the study are identified as follows:
Preliminary boundary conditions for pulse shape optimisation, where more than one set of boundary conditions
may be considered in order to derive a selection of pulse shape candidates.
One or more network configurations for pulse shape evaluation. These shall be representative of the most likely
EGPRS2 deployment strategies.
A legacy Rx filter working assumption.
5.2 Preliminary boundary conditions for pulse shape
optimisation
5.2.1 Introduction
Boundary conditions are needed to define the scope of the optimisation. The boundary conditions will also allow a pre-
selection at the link level if more than one pulse shape is optimised against the same set of boundary conditions.
Only when the system evaluation is complete will it be known if the boundary conditions were realistically set,
therefore it is proposed to denote these as 'preliminary' boundary conditions. If they were set too loose or too tight, then
a further iteration of the study might be necessary.
In general, the same procedure will be used for the optimisation of the EGPRS2-B wide pulse shape on the DL as for
the EGPRS2-B wide pulse shape on the UL.
5.2.2 Time domain
The length of the optimised pulse shape shall not be longer than 6 reduced symbol periods. This is to avoid an increase
in delay spread which the MS equaliser needs to cope with.
5.2.3 Frequency domain
The adjacent channel protection of the optimised pulse shape (including Tx impairments) shall be:
• 50 dB at the 400 kHz offset
• 58 dB at the 600 kHz offset
Measurements performed by network vendors will verify that these criteria can be met for each candidate pulse shape.
For the 200 kHz offset, any criterion may be considered in the pulse shape optimisation given that this criterion will be
verified by the System level studies (Section 9).
If an adjacent channel at the 200 kHz offset is used by a different operator (i.e. no guard band exists), then the linearised
GMSK pulse would be the default on the allocation's edge channels.
5.3 Network configurations for pulse shape evaluation
The network configurations that shall be used to evaluate the optimised pulse shapes are given in Table 5.1 and 5.2.
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3GPP TR 45.913 version 13.0.0 Release 13 13 ETSI TR 145 913 V13.0.0 (2016-01)
Table 5.1: Configuration specific assumptions
Parameter WIDER-1 WIDER-2 WIDER-3
Frequency band 900 MHz 900 MHz 900 MHz
Cell radius 500 m 500 m 500 m
Bandwidth 4.4 MHz 11.6 MHz 8.0 MHz
Guard band 0.2 MHz 0.2 MHz 0.2 MHz
Number of channels (excl 21 57 39
guard band)
Number of TRX 3 6 4
BCCH frequency reuse 4/12 4/12 4/12
TCH frequency reuse 1/1 3/9 3/9
Frequency hopping synthesized baseband baseband
Length of MA 9 5 4 (includes BCCH
carrier)
BCCH or TCH under BCCH and TCH BCCH and TCH BCCH and TCH
interest
Resource Voice 3 3 3
allocation on 4 4 4
Data
BCCH
1 1 1
Network sync mode sync sync sync
1
timeslots are assumed to be aligned; TDMA frames are assumed to be aligned on intra-site level
and randomly aligned on inter-site level.

The MS is 4-PDCH capable on the downlink. The number of MSs multiplexed on the same radio resource is FFS.
ETSI

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