ETSI TR 102 742 V1.1.1 (2008-03)

Technical Report
Broadband Radio Access Networks (BRAN);
Consideration of requirements for Mobile Terminal Station (TS)
in Broadband Wireless Access Systems (BWA)
in the 3 400 MHz to 3 800 MHz Frequency Band

2 ETSI TR 102 742 V1.1.1 (2008-03)

Reference
DTR/BRAN-0000015
Keywords
access, broadband, BWA, mobile, terminal
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3 ETSI TR 102 742 V1.1.1 (2008-03)
Contents
Intellectual Property Rights.5
Foreword.5
Introduction .5
1 Scope.6
2 References.6
2.1 Normative references.6
2.2 Informative references.6
3 Definitions, symbols and abbreviations .7
3.1 Definitions.7
3.2 Symbols.8
3.3 Abbreviations.8
4 Study of Tx and Rx requirements.8
4.1 Transmitter maximum radiated output power .8
4.1.1 Definition.8
4.1.2 Limits.8
4.1.3 Output Power tolerance .9
4.2 Emission discussion.9
4.3 Transmitter Adjacent Channel Leakage power Ratio (ACLR).12
4.3.1 Definition.12
4.3.2 Limits.12
4.4 Transmitter power control .12
4.4.1 Definition.12
4.4.2 Limits.12
4.5 Receiver adjacent and alternate channel rejection.12
4.5.1 Definition.12
4.5.2 Limits.13
5 UE-UE Co-existence Studies .13
5.1 Introduction.13
5.2 UE to UE Results .13
5.2.1 Outdoor hotspots with 250 m sector radius and 7 MHz guard band.15
5.2.2 Indoor hotspots with 250 m sector radius and 7 MHz guard band.16
5.3 Additional Results for a sector radius of 1 000 m - outdoor hotspots .17
5.4 Summary of UE to UE studies .18
Annex A: Transmitter spectrum emission mask.19
A.1 Definition.19
A.2 Limits.19
A.2.1 Spectrum emission mask for 5 MHz bandwidth.19
A.2.2 Spectrum emission mask for 7 MHz bandwidth.19
A.2.3 Spectrum emission mask for 10 MHz bandwidth.20
Annex B: General requirements.21
B.1 Transmitter spurious emissions.21
B.1.1 Definition.21
B.1.2 Limits.21
B.2 Receiver spurious emissions .21
B.2.1 Definition.21
B.2.2 Limits.22
Annex C: Methodology and Parameters for UE to UE studies.23
ETSI
4 ETSI TR 102 742 V1.1.1 (2008-03)
C.1 Methodology.23
C.1.1 User distribution.24
C.1.2 Distance proportional power control .25
C.1.3 Calculate received SINR for each victim UE .25
C.1.3.1 Baseline Scenario (no inter-system interference) .25
C.1.3.2 Interference Scenario (with inter-system interference).26
C.1.4 Map SINR into throughput.26
C.1.5 Collect statistical results.28
C.2 System Parameters .28
C.3 Propagation Models.30
C.4 Interference Mechanisms Considered .31
C.4.1 Derivation of ACLR from Unwanted Emissions.31
C.4.2 Derivation of ACS from Adjacent/Alternate Channel Rejection (ACR) Performance .32
History .34

ETSI
5 ETSI TR 102 742 V1.1.1 (2008-03)
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://webapp.etsi.org/IPR/home.asp).
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 Technical Committee Broadband Radio Access Networks
(BRAN).
Introduction
The present report deals with the consideration of requirements for mobile terminal stations in broadband wireless
systems in the frequency band 3 400 MHz to 3 800 MHz. The detailed scope of the present document can be found in
clause 1.
In November 2006 CEPT SE19 finalized its studies on the co-existence between mobile and fixed/nomadic broadband
wireless systems in the 3 400 MHz to 3 800 MHz band. The outcome of SE19 [6] lead to the decision to open this band
also for mobile use, which is reflected in ECC/DEC/(07)02 [1].
For fixed broadband wireless systems in this band it has to be noted that there exists already a harmonized European
standard EN 302 326-2 [3] developed within ETSI.
ETSI
6 ETSI TR 102 742 V1.1.1 (2008-03)
1 Scope
The present document is a technical report of the "Broadband Radio Access Network (BRAN); Consideration of
requirements for Mobile Terminal Station (TS) in Broadband Wireless Access Systems (BWA) in the 3 400 MHz to
3 800 MHz Frequency Band" work item. This work item was adopted at ETSI BRAN#50.
The purpose of this work item is to detail the technical and operational conditions with Terminal Stations operating in
the 3 400 MHz to 3 800 MHz frequency range implemented under the flexible usage mode conditions identified in ECC
Decision(07)02 [1]. It particularly focuses on the developments required within the standards framework to support the
MWA aspects identified in the Decision.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or non-
specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
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 indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not Applicable.
2.2 Informative references
[1] ECC/DEC/(07)02: Electronic Communications Committee, "ECC Decision of 30 March 2007 on
availability of frequency bands between 3400-3800 MHz for the harmonized implementation of
Broadband Wireless Access systems(BWA)".
[2] CEPT/ERC/REC 74-01E: "Unwanted Emissions in the Spurious Domain", October 2005.
[3] ETSI EN 302 326-2: "Fixed Radio Systems; Multipoint Equipment and Antennas;
Part 2: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
for Digital Multipoint Radio Equipment".
ETSI
7 ETSI TR 102 742 V1.1.1 (2008-03)
[4] ETSI EN 301 908-6 (V3.2.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Base Stations (BS), Repeaters and User Equipment (UE) for IMT-2000 Third-Generation cellular
networks; Part 6: Harmonized EN for IMT-2000, CDMA TDD (UTRA TDD) (UE) covering
essential requirements of article 3.2 of the R&TTE Directive".
[5] BRAN50d035r1: "Broadband Radio Access Networks (BRAN); Broadband Data Transmission
Systems in 2500-2690 MHz, Harmonized EN covering essential requirements of article 3.2 of the
R&TTE 1999/5/EC", April 2007.
[6] SE19(06)74: "Final Summary of the 37th SE19 meeting", 21-22 Nov. 2006.
[7] SE19(06)70: "Inter-System MWA MS to MWA MS Coexistence Analysis in 3.5 GHz Band for
Unsynchronized TDD Systems or TDD Adjacent to FDD Systems", Motorola, UK Broadband,
Clearwire Denmark, WiMax Telecom Europe 22-22 November 2006.
[8] ETSI TS 125 102 (V7.2.0): "Universal Mobile Telecommunications System (UMTS); User
Equipment (UE) radio transmission and reception (TDD) (3GPP TS 25.102 version 7.2.0
Release 7)".
[9] 3GPP TR 25.889 (V6.0.0): "Feasibility study considering the viable deployment of UTRA in
additional and diverse spectrum arrangements".
[10] ECC/REC/(04)05: "ECC Recommendation (04)05 Guidelines for Accommodation and
Assignment of Multipoint Fixed Wireless Systems in Frequency Bands 3.4-3.6 GHz and
3.6-3.8 GHz".
[11] IEEE 802.16.3c-01: "Channel Models for Fixed Wireless Applications".
[12] SE19(06)54, Motorola: "MWA Systems for FWA/NWA Systems Coexistence Analysis in 3.5
GHz Band", 6-8 September 2006.
[13] R4-061076(V0.4.0): "E-UTRA Radio Frequency (RF) system scenarios," 3GPP TSG RAN
WG4#40, Tallinn, Estonia, August 28 - September 1, 2006.
[14] WiMAX Forum: "Sharing studies in the 2 500-2 690 MHz band between IMT-2000 and
broadband wireless access (BWA) systems," ITU-R WP8F/597, October 2005.
[15] ITU-T Report M.2030: "Coexistence between IMT-2000 time division duplex and frequency
division duplex terrestrial radio interface technologies around 2 600 MHz operating in adjacent
bands and in the same geographical area".
NOTE: Available at http://www.itu.int/publ/R-REP-M.2030/en.
[16] IEEE 802.16e: "IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface
for Fixed and Mobile Broadband Wireless Access Systems - Amendment for Physical and
Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands".
[17] ETSI TS 125 101: "Universal Mobile Telecommunications System (UMTS); User
Equipment (UE) radio transmission and reception (FDD) (3GPP TS 25.101 version 8.1.0
Release 8)".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Automatic Transmit Power Control (ATPC): function implemented to offer a dynamic power control
maximum radiated output power: maximum mean radiated output power (EIRP) declared by the manufacturer
maximum radiated power density: maximum mean radiated output power (EIRP) density, defined as dBm/MHz
ETSI
8 ETSI TR 102 742 V1.1.1 (2008-03)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
dB deciBel
dBc deciBel relative to carrier
dBm deciBel relative to 1 mW
f center frequency
c
GHz GigaHertz
kHz kiloHertz
MHz MegaHertz
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACIR Adjacent Channel Interference Ratio
ACLR Adjacent Channel Leakage power Ratio
ACS Adjacent Channel Selectivity
AMC Adaptative Modulation and Coding
ATPC Automatic Transmit Power Control
BER Bit Error Rate
BW BandWidth
BWA Broadband Wireless Access
CDF Cumulative Distribution Function
EIRP Equivalent Isotropically Radiated Power
FDD Frequency Division Duplex
FER Frame Error Rate
LOS Line Of Sight
MWA Mobile Wireless Access
OFDM Orthogonal Frequency Division Multiplexing
OFDMA Orthogonal Frequency Division Multiplexing Access
PA Power Amplifier
PER Packet Error Rate
PL PathLoss
PSD Power Spectrum Density
PUSC Partial Usage of SubCarriers
SINR Signal to Interference and Noise Ratio
TDD Time Division Duplex
TPC Transmit Power Control
TS Terminal Station
UE User Equipment
WCDMA Wideband Code Division Multiple Access
4 Study of Tx and Rx requirements
4.1 Transmitter maximum radiated output power
4.1.1 Definition
The maximum power of the transmitter has to be defined in terms of maximum radiated power. The term maximum
radiated power density and maximum radiated output power are defined in clause 3.1.
4.1.2 Limits
The limit of the maximum radiated power density is 25 dBm/MHz according to ECC/DEC/(07)02 [1].
ETSI
9 ETSI TR 102 742 V1.1.1 (2008-03)
This leads to different maximum radiated output power figures for the different channel bandwidth. Table 4.1 shows as
example these different figures for a number of channel bandwidths.
Table 4.1: Maximum radiated output power for different channel bandwidth
Channel bandwidth Maximum radiated output power
5 MHz 32 dBm
7 MHz 33,5 dBm
10 MHz 35 dBm
4.1.3 Output Power tolerance
The maximum radiated output power should be declared by the supplier. The error of the maximum radiated output
power should be within a tolerance of ±2 dB under normal conditions.
4.2 Emission discussion
The question of feasible emission limits for OFDMA systems has been raised in many forums. The final establishment
of one or more mask limits will have important impact to handset performance. This clause addresses some measured
data on an OFDM transmitter and describes the impact to the handset due to emission masks.
The limiting element for close-in emissions of a typical transmitter system at high power is the power amplifier.
Figure 4.1 shows spectrum data captured from a 3G WCDMA PA, using a 10 MHz OFDMA modulated signal, at
different levels of output power (5 MHz and 7 MHz OFDMA results would be similar). It also compares the spectrum
data with the emission limits of several proposals. The output powers at which the different masks are satisfied are
determined by visual inspection and do not represent any final determination of compliance but can be used for first
order comparison reasons.
ETSI
10 ETSI TR 102 742 V1.1.1 (2008-03)
Spectral Emissions vs. Output Power
10 MHz OFDMA Signal
-10
-20
ETSI BRAN (10 MHz)
-30
EN 302 326
-40
-50
-60
0 5 7 11 15 17 20 25
Frequency Offset (MHz)
NOTE: The units of this plot are in dBc/MHz; the output power is normalized to 0 dB such that the attenuation of
out-of-band emissions relative to the output power is shown.

Figure 4.1: Transmitter Emissions vs Output Power
Table 4.2 summarizes the difference in output power at which the PA meets each mask relative to the TFES emission
mask [4] (10 MHz spectrum emission mask scaled version of 5 MHz option, which is also proposed in [5]). The
proposed TFES mask is very similar to the 3GPP WCDMA mask (from TS 125 101 [17]), the main difference being
scaling offsets to accommodate a 10 MHz channel bandwidth. The power amplifier used to collect this data of course
can be redesigned such that each mask is met at the desired output power however the resized device will consume
additional power as the mask gets more restrictive (shown in tables 4.2 and 4.3, column 3).
NOTE: Task Force for ERM and MSG for Harmonized Standards for IMT2000 (ERM: Electromagnetic
Compatibility and Radio Spectrum Matters; MSG: ETSI Mobile Standards Group).
Table 4.2: Emissions Mask Impact on TDD Transmitter
TDD (Duty Cycle = 45 %; Post PA Loss = 2,5 dB)
Increase in Current (to
Power Backoff (dB)
Emission Mask
reach 24 dBm)
ETSI BRAN (10 MHz) 0,0 (24,0 dBm) 1,00 x
EN 302 326-2 [3] (EMO = 2) 0,5 (23,5 dBm) 1,10 x
EN 302 326-2 [3] (EMO = 4) 1,2 (22,8 dBm) 1,18 x
FCC (Part 27) 2,3 (21,7 dBm)
1,37 x
EN 302 326-2 [3] (EMO = 6) 2,9 (21,1 dBm) 1,49 x
802.16 (WirelessHUMAN) 5,0 (19,0 dBm) 2,13 x

ETSI
PSD (dBc/MHz)
11 ETSI TR 102 742 V1.1.1 (2008-03)
Table 4.3: Emissions Mask Impact on FDD Transmitter
FDD (Duty Cycle = 100 %; Post PA Loss = 4,5 dB)
Increase in Current (to
Power Backoff (dB)
Emission Mask
reach 24 dBm)
BRAN (10 MHz Option) 0,0 (24,0 dBm) 1,00 x
EN 302 326-2 [3] (EMO = 2) 0,5 (23,5 dBm) 1,10 x
EN 302 326-2 [3] (EMO = 4) 1,2 (22,8 dBm) 1,18 x
FCC (Part 27) 2,3 (21,7 dBm) 1,37 x
EN 302 326-2 [3] (EMO = 6) 2,9 (21,1 dBm) 1,49 x
802.16 (WirelessHUMAN) 5,0 (19,0 dBm) 2,13 x

NOTE: Absolute PA power is shown in parenthesis next to the amount of power reduction.
For a TDD transmitter to achieve 24 dBm of power at the antenna and using an assumption of 2,5 dB loss between the
PA and antenna, the PA power is 26,5 dBm. To comply with the more restrictive masks at 24 dBm antenna power the
power amplifier has to be modified. Table 4.2 reports the average amount of current required by the modified PA, and
the increase in current drain over the reference case, to meet the required antenna power.
An FDD transmitter has an estimated 2 dB of extra post PA loss because of the duplex filter; the PA power is 28,5 dBm.
The increase in PA power and the increase in duty cycle result in higher current drain and higher power dissipation in
the FDD transmitter compared to TDD. Again, to comply with the more restrictive masks at 24 dBm antenna power, the
power amplifier has to be modified. At a certain point, highlighted in yellow in table 4.3, the high PA current creates
more heat than a handset can safely handle.
The tradeoff between emissions and PA power consumption is clear: compliance with the 802.16 mask will cost more
than twice as much current as compliance with the TFES mask. For the 3,5 GHz band the TFES mask is presently the
only mask that may allow for power consumption (and corresponding battery life) of TDD and especially FDD mobile
terminal stations to be competitive with mobile handsets deployed in the 2,5 GHz band.
Figure 4.2 shows the TFES mask for the three channel bandwidth options 5 MHz, 7 MHz and 10 MHz in the 3,5 GHz
band. The 5 MHz option is exactly the same like TFES [4]. For the 7 MHz and 10 MHz option the mask is slightly
adapted to facilitate the shape of the OFDMA signal and to achieve the same ACLR figure as for the 5 MHz case. The
actual limits for all 3 channel bandwidth options are shown in annex A.
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-55
0 5 10 15 20 25
Offset frequency (MHz)
5 MHz (TFES mask) 7 MHz 10 MHz

Figure 4.2: Mask for 5 MHz, 7 MHz and 10 MHz option
ETSI
dB/MHz
12 ETSI TR 102 742 V1.1.1 (2008-03)
4.3 Transmitter Adjacent Channel Leakage power Ratio (ACLR)
4.3.1 Definition
Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the mean power centred on the assigned channel
frequency to the mean power centred on a first or second adjacent channel. The first adjacent and second adjacent
channel centre offsets relative to the assigned channel centre frequency are exactly one channel bandwidth and two
channel bandwidths. The measurement on the assigned and victim channel is performed using a rectangular filter with a
bandwidth of 95 % of the channel bandwidth.
4.3.2 Limits
If the adjacent channel mean power is greater than -55 dBm then the ACLR should be equal to or greater than the limits
specified in table 4.4.
Table 4.4: Mobile Terminal Station ACLR limits
ACLR limit relative to assigned
Adjacent channel
channel frequency [dB]
st 32,2
1 adjacent channel
nd
42,2
2 adjacent channel
NOTE: The values in this table include already a measurement uncertainty of 0,8 dB.

4.4 Transmitter power control
4.4.1 Definition
Transmit Power Control (TPC) is a mechanism that should be used by the equipment to ensure a mitigation factor on
the aggregate power from a large number of devices to improve the spectrum sharing conditions. Automatic Transmit
Power Control (ATPC) is defined in clause 3.1.
4.4.2 Limits
For mobile TS ATPC has to be implemented with a minimum power range of 15 dB. The ATPC should be implemented
so that the minimum level is equal or less the 10 dBm/MHz.
4.5 Receiver adjacent and alternate channel rejection
4.5.1 Definition
The receiver adjacent and alternate channel rejection is a measure of the receiver's ability to receive a wanted signal at
its assigned channel frequency in the presence of an unwanted interferer at a given frequency offset from the centre
frequency of the assigned channel, either at the adjacent or alternate channel, without this unwanted input signal causing
a degradation of the performance of the receiver beyond a specified limit.
To reference the receiver adjacent and alternate channel rejection values, a sensitivity level is defined as the signal level
-6
for Bit Error Rate (BER) ≤ 10 performance, over the channel bandwidth, corresponding to the most robust modulation
and coding rate supported by the technology.
ETSI
13 ETSI TR 102 742 V1.1.1 (2008-03)
4.5.2 Limits
Table 4.5 lists the receiver adjacent and alternate channel rejection. For the interferer the same channel bandwidth has
to be used as for the assigned channel bandwidth. All the measurements are done over 95 % of the channel. The
-6
compliant system should be able to meet a Bit Error Rate (BER) < 10 with the interference levels specified in the
tables. Please note that depending on some assumed packet sizes, equivalent Packet Error Rate (PER) criteria can be
used alternatively.
Table 4.5: Receiver adjacent and non-adjacent channel rejection
Adjacent channel rejection (dB) Alternate channelrejection (dB)
20 39
5 UE-UE Co-existence Studies
5.1 Introduction
When a TDD MWA system coexists with a FDD MWA system or an unsynchronized TDD MWA system in adjacent
frequency blocks and the same geographic area, the UE to UE interference occurs when two UEs, one from each
system, move close to each other while active. This situation usually happens in high user density areas, or hotspots,
such as train stations, stadiums, and coffee shops.
This analysis addresses the UE to UE interference scenario for coexistence analysis of introducing Mobile Wireless
Access (MWA) systems in the 3,5 GHz band. The following study is based on an input to ECC SE19 (SE19(06)70 [7]),
which led to the decision to open the 3 400 MHz to 3 800 MHz band also for mobile use [6]. In SE19(06)70 results are
presented assuming that equipment meets the EN 302 326-2 [3] requirements (ETSI mask from EN 302 326-2 [3]
EqC-PET=O and EqC-EMO=4). This study presents further results for the case that equipment meets the
TS 125 102 [8] requirements for unwanted emission.
A statistical UE to UE interference model based on certain hotspot definitions is used. The proposed statistical UE to
UE interference simulation considers the high user density areas (hotspots) instead of assuming uniform user
distribution throughout the whole sector. It models the UE to UE interference problem in a more balanced manner than
deterministic worst case analysis and statistical analysis using uniform distribution. In particular, this methodology
effectively captures the two major intrinsic aspects of the UE to UE interference:
i.) the event that two terminal stations come close to each other occurs with certain probability and mostly
happens in high user density areas,
ii.) the power control scheme can scale down the Tx power of the interfering UE depending on its location relative
to the base station.
Similar to the SE19 studies we consider a 7 MHz channel bandwidth along with the EN 302 326-2 [3] standard as the
base for technical specifications of MWA UE since it represents the most current harmonized standard for BWA
systems in this band. As mentioned earlier we are also using the TS 125 102 [8] beside the EN 302 326-2 [3] for the
emission requirements.
5.2 UE to UE Results
In this clause, we present the simulation results for UE to UE statistical simulation with hotspot modeling. We note that
the results are dependent upon the parameters and assumptions used in the study, which were chosen according to
typical OFDMA based MWA systems in a micro cell setting. We simulated both outdoor hotspots and indoor hotspots
scenarios. For both cases, a hotspot radius of 15 m and a guard band of 7 MHz (1 channel) is used.
Results are shown for two different sets of ACLR values, which are detailed in table 5.1. Further analysis and details on
the interference mechanisms used in this study can be found in clause C.4.
ETSI
14 ETSI TR 102 742 V1.1.1 (2008-03)
Table 5.1 ACLR of MWA UE
ACLR (dB)
Emission requirement
nd rd
2 3 Adjacent and
st
for MWA UE
1 Adjacent
Adjacent up
EN 302 326-2 [3] 20,9 46,3 60
3GPP ACLR 33 43 53
Due to the probabilistic nature of UE to UE interference, we are mainly interested in the probability of the user
experiencing less than 1 dB or 3 dB degradation in SINR due to UE to UE interference and the probability of the user
experiencing less than 5 % or 10 % spectral efficiency loss. These quantitative results are summarized in table 5.2.
We assumed that the maximum number of simultaneous active users per sector is 16 to be consistent with the
assumptions made in SE19. Normally active users are defined in the sense of users active in a communication session
(like in a VoIP call). However, for the purpose of simulation, the concept of simultaneous active users is different. What
we are modeling for each snapshot are users who are active simultaneously on a very fine time granularity, i.e., those
users that are scheduled to tx/rx within the same frame (or even symbol). In this study, values representing the WiMAX
system are assumed. This number is upper-bounded by the total number of available subchannels in the WiMAX
system (30 for Partial Usage of Subcarriers (PUSC), and 16 for Adaptive Modulation and Coding (AMC)). A detailed
description of the Methodology and Parameters can be found in annex C.
The 1x4x2 frequency reuse pattern used is illustrated below in the frequency domain. Both the interfering and victim
systems use 2 consecutive blocks of frequency, each occupies one channel bandwidth.

7 MHz
f1f1f1  f2f2f2  f3 f4
GB
Table 5.2 summarizes the results for a cell radius of 250 m.
Table 5.2: Percentage of the users experiencing "< 1 dB SINR degradation" or "< 3 dB SINR
degradation" or "< 5 % spectral efficiency loss" or "< 10 % spectral efficiency loss"
for 1 channel (7 MHz) guard band
Emission Outdoor hotspots Indoor hotspots
requirement for < 1 dB SINR < 3 dB SINR < 5 % < 10 % < 1 dB SINR < 3 dB SINR < 5 % < 10 %
UE
degradation degradation SE loss SE loss degradation degradation SE loss SE loss
EN 302 326-2 [3] 96 % 99 % 94 % 97 % 80 % 92 % 76 % 84 %
3GPP ACLR 89 % 97 % 89 % 94 % 52 % 78 % 66 % 75 %

It can be seen from the above results that indoor hotspots have more severe UE to UE interference problem. That is
because the users at an indoor hotspot receive weaker desired signal due to penetration loss while the interfering mobile
nearby has higher transmitting power to compensate the penetration loss. In our simulation, we assume the hotspots are
either all indoor or all outdoor. A hybrid of both indoor and outdoor hotspots could also occur and would give results
somewhere between the two scenarios we considered. Further, we also see that the results using 3GPP ACLR values are
quite similar to the results using the EN 302 326-2 [3] emission requirements for the outdoor hotspot case. For the
indoor case the 3GPP ACLR values show slightly worse results.
The detailed results in the form of cumulative distribution function (CDF) of the SINR degradation (in dB) and CDF of
the spectral efficiency degradation (in percentage) for these system settings are presented below. Each figure contains
two CDF curves which are plotted in different colors: black curve for ACLR values based on EN 302 326-2 [3] EMO=4
and a red curve for the ACLR values defined in 3GPP.
ETSI
15 ETSI TR 102 742 V1.1.1 (2008-03)
5.2.1 Outdoor hotspots with 250 m sector radius and 7 MHz guard band
ETSI 302 326-2 EMO =4
0,95
3GPP ACLR value
0,9
Probability
0,85
0,8
0,75
0,7
0,65
0,6
0,55
0,5
0 1 2 4 6 8 10 12 14 16
SINR degradation (dB)
Figure 5.1
ETSI 302 326-2 EMO =4
0,95
3GPP ACLR value
0,9
0,85
0,8
Probability
0,75
0,7
0,65
0,6
0,55
0,5
0 10 20 30 40 50 60
Spectrum efficiency degradation in percentage(%)

Figure 5.2
ETSI
16 ETSI TR 102 742 V1.1.1 (2008-03)
5.2.2 Indoor hotspots with 250 m sector radius and 7 MHz guard band
0,95
ETSI 302 326-2 EMO =4
3GPP ACLR value
0,9
0,85
0,8
Probability
0,75
0,7
0,65
0,6
0,55
0,5
0 2 4 6 8 10 12 14 16
SINR degradation (dB)
Figure 5.3
0,95
0,9
ETSI 302 326-2 EMO =4
0,85 3GPP ACLR value
0,8
Probability
0,75
0,7
0,65
0,6
0,55
0,5
0 10 20 30 40 50 60
Spectrum efficiency degradation in percentage(%)

Figure 5.4
ETSI
17 ETSI TR 102 742 V1.1.1 (2008-03)
5.3 Additional Results for a sector radius of 1 000 m - outdoor
hotspots
The sector radius of 1 000 m is used to model the situation in suburban area. While we keep the same number of
hotspots per sector (3 hotspots) and the same number of users in the hotspot (75 % of users are in the hotspots), it is
assumed that the hotspots are located less than 0,8xSector Radius from the base station to consider the effect of cell
planning which usually puts the base station closer to high user density areas. Results are shown for outdoor hotspots,
again for a 7 MHz guard band. It can be seen that for larger sector radius the UE interference problem gets worse. That
is because the victim UEs are more probable to receive lower desired signal due to its distance from the base station and
there is also more chance that the interfering UEs transmit at higher power due to power control. Again, like for the
250 m case 3GPP ACLR values give similar results like the emission requirements from EN 302 326-2 [3].
ETSI 302 326-2 EMO =4
3GPP ACLR value
0,9
0,8
Probability
0,7
0,6
0,5
0,4
0 5 10 15 20 25 30 35 40 45
SINR degradation (dB)
Figure 5.5
ETSI
18 ETSI TR 102 742 V1.1.1 (2008-03)
0,95
0,9
0,85
Probability
0,8
0,75
ETSI 302 326-2 EMO =4
0,7
3GPP ACLR value
0,65
0,6
0 10 20 30 40 50 60 70 80
Spectrum efficiency degradation in percentage(%)

Figure 5.6
5.4 Summary of UE to UE studies
In this clause UE to UE interference studies have been presented, which are from the UE perspective the most critical
scenario between two unsynchonized TDD MWA operators or a TDD MWA operator adjacent to an FDD MWA
operator.
The presented results are based on the studies done in SE19 [6], [7], however also including results for emission
requirements defined in TS 125 102 [8]. Results have been presented for outdoor as well as indoor scenarios assuming a
guard band of 7 MHz (1 channel, ECC/REC(04)05 [10]).
From the results we see that using 3GPP ACLR values are quite similar to the results using the EN 302 326-2 [3]
emission requirements for the outdoor hotspot case, even for a larger cell radius. For the indoor case the 3GPP ACLR
values show slightly worse results.
ETSI
19 ETSI TR 102 742 V1.1.1 (2008-03)
Annex A:
Transmitter spectrum emission mask
A.1 Definition
Spectrum emission mask defines an out of band emission requirement for the transmitter. These out of band emissions
are unwanted emissions outside the channel bandwidth resulting from the modulation process and non-linearity in the
transmitter but excluding spurious emissions.
A.2 Limits
A.2.1 Spectrum emission mask for 5 MHz bandwidth
The spectrum emission mask of the TS applies to frequency offsets between 2,5 MHz and 12,5 MHz on both sides of
the TS center carrier frequency. The out-of-channel emission is specified as power level measured over the specified
measurement bandwidth but relative to the total mean power of the UE carrier measured in the 5 MHz band.
The power of any TS emission should not exceed the levels specified in Table A.1.
Table A.1: Spectrum emission mask requirement (5 MHz option)
Minimum requirement Measurement bandwidth
Frequency offset Δf
Δf
⎧ ⎛ ⎞ ⎫
− 33,5 − 15× − 2,5 dBc
⎜ ⎟
⎨ ⎬
2,5 MHz to 3,5 MHz 30 kHz
MHz
⎩ ⎝ ⎠ ⎭
⎧ Δf ⎫
⎛ ⎞
− 33,5 − 1× − 3,5 dBc
⎨ ⎜ ⎟ ⎬
3,5 MHz to 7,5 MHz 1 MHz
MHz
⎝ ⎠
⎩ ⎭
⎧ Δf ⎫
⎛ ⎞
7,5 MHz to 8,5 MHz − 37,5 − 10× − 7,5 dBc 1 MHz
⎜ ⎟
⎨ ⎬
MHz
⎝ ⎠
⎩ ⎭
8,5 to 12,5 MHz -47,5 dBc 1 MHz
NOTE 1: Δf is the separation between the carrier frequency and the centre of the measuring filter.
NOTE 2: The first measurement position with a 30 kHz filter is at Δf equals to 2,515 MHz; the last is at Δf
equals to 3,485 MHz.
NOTE 3: The first measurement position with a 1 MHz filter is at Δf equals to 4 MHz; the last is at Δf
equals to 12 MHz. As a general rule, the resolution bandwidth of the measuring equipment
should be equal to the measurement bandwidth. To improve measurement accuracy, sensitivity
and efficiency, the resolution bandwidth can be different from the measurement bandwidth.
When the resolution bandwidth is smaller than the measurement bandwidth, the result should be
integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of
the measurement bandwidth.
NOTE 4: Note that equivalent PSD type mask can be derived by applying 10×log (5 MHz/30 kHz) =
22,2 dB and 10×log(5 MHz/1 MHz)= 7 dB scaling factor for 30 kHz and 1 MHz measurement
bandwidth respectively.
A.2.2 Spectrum emission mask for 7 MHz bandwidth
The spectrum emission mask of the TS applies to frequency offsets between 3,5 MHz and 17,5 MHz on both sides of
the TS center carrier frequency. The out-of-channel emission is specified as power level measured over the specified
measurement bandwidth but relative to the total mean power of the TS carrier measured in the 7 MHz band.
The power of any TS emission should not exceed the levels specified in Table A.2.
ETSI
20 ETSI TR 102 742 V1.1.1 (2008-03)
Table A.2: Spectrum emission mask requirement (7 MHz option)
Frequency offset Δf Minimum requirement Measurement bandwidth
⎧ Δf ⎫
⎛ ⎞
− 33,5 − 13.5× − 3,5 dBc
3,5 MHz to 4,75 MHz ⎜ ⎟ 30 kHz
⎨ ⎬
MHz
⎝ ⎠
⎩ ⎭
⎧ Δf ⎫
⎛ ⎞
4,75 MHz to 10,5 MHz − 35,0 − 0.7× − 4,75 dBc 1 MHz
⎜ ⎟
⎨ ⎬
MHz
⎝ ⎠
⎩ ⎭
Δf
⎧ ⎛ ⎞ ⎫
− 39,0 − 7× − 10,5 dBc
10,5 MHz to 11,9 MHz ⎜ ⎟ 1 MHz
⎨ ⎬
MHz
⎩ ⎝ ⎠ ⎭
11,9 MHz to 17,5 MHz -49,0 dBc 1 MHz
NOTE 1: Δf is the separation between the carrier frequency and the centre of the measuring filter.
NOTE 2: The first measurement position with a 30 kHz filter is at Δf equals to 3,515 MHz; the last is at Δf
equals to 4,735 MHz.
NOTE 3: The first measurement position with a 1 MHz filter is at Δf equals to 5,25 MHz; the last is at Δf
equals to 17 MHz. As a general rule, the resolution bandwidth of the measuring equipment
should be equal to the measurement bandwidth. To improve measurement accuracy, sensitivity
and efficiency, the resolution bandwidth can be different from the measurement bandwidth.
When the resolution bandwidth is smaller than the measurement bandwidth, the result should be
integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of
the measurement bandwidth.
NOTE 4: Note that equivalent PSD type mask can be derived by applying 10×log (5 MHz/30 kHz)= 23,7 dB
and 10×log(5 MHz/1 MHz)= 8,5 dB scaling factor for 30 kHz and 1 MHz measurement bandwidth
respectively.
A.2.3 Spectrum emission m
...