IP01 ACP WG S_28 Mar Web meeting
ICAO ACP WG-S
SARPS Validation
Discussion material on Web-EX
2014/3/28
Hitachi Ltd.,
© Hitachi, Ltd. 2014. All rights reserved.
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Validation items and major Conditions
1.Validation items for Hitachi’s BS
 3.5 SPECTRAL MASK AND EMISSION
 4.4.4 Maximum BER
 4.6 SECURITY SERVICE
2. Conditions of testing
 Frequency band : 5091MHｚ～5150MHz
(SARPS:5030MHｚ～5150MHｚ）
 Measure PER not BER
Radio system with FEC system, measurement by PER is now commonly
used, and the method is published by WiMAX Forum testing documents.
Refer to the IP.
 CTC, convolution turbo coding, is used as the coding scheme for measuring
receiver sensitivity.
 Uplink 64QAM is option (not validated) (3.5.4/ 3.5.6/ 4.4.4)
 Prototype BS is prepared by Hitachi.
 Measured system for 3.5 and 4.4.4 are wire-connected in indoor LAB.
 The tested center frequencies are following three points.
Low Ch;5095MHz, Mid Ch:5120MHz, High Ch:5145MHz
 Testing items for Security services function need to be discussed.
© Hitachi, Ltd. 2014. All rights reserved.
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Appendix
© Hitachi, Ltd. 2013. All rights reserved.
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1. Emission Test
Spectrum MASK is as following condition.
Emission power would be measured if it is less than these spectrum masks.
BS transmission waves are captured by Spectrum Analyzer.
dB
0
Table 1 Spectral Mask Parameter
-26
-32
Frequency
Band(MHz)
A
B
C
C´
D
5MHz
2.25
2.5
2.75
５
7.5
-40
--50
A B C
C´
Tx Spectral Mask
D
MHｚ
© Hitachi, Ltd. 2014. All rights reserved.
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2.1 Power Control
SARPS description is as follows.
3.5.2 The AeroMACS radios shall implement power control
Power control would be confirmed by observing the power control function of BS to MS,
changing the path-loss value between BS and MS by Attenuator.
The confirmed criteria is that transmission power would be changed by BS.
© Hitachi, Ltd. 2014. All rights reserved.
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2.2 Receiver Rejection
Minimum Rejection for adjacent or second adjacent Channel is confirmed by
measuring the error rate, which is less than PER, which is equivalent to BER of
less than 10e-6.
PER is calculated to BER by following equation.
PER = 1 – ( 1 – BER)
n
n : bits unit size of FEC block
The signal level is +3dB with correspondent level of adjacent channel interference
and second adjacent channel as following table are added.
Table 2
Item
Modulation
Signal level
Interference level
Adjacent channel
(+/-5MHz)
3.5.3
16QAM-3/4
Smin + 3dB
Smin + 10dB
3.5.4
64QAM-3/4
Smin + 3dB
Smin + 4dB
Second adjacent
channel(+/-10MHz)
3.5.5
16QAM-3/4
Smin + 3dB
Smin + 29dB
3.5.6
64QAM-3/4
Smin + 3dB
Smin + 23dB
Since the Uplink 64QAM is optional, BS is not applicable for Receiving 64QAM.
© Hitachi, Ltd. 2014. All rights reserved.
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2.3 Maximum BER(1/2)
SARPS :4.4.4 The maximum bit error rate shall not exceed BER 10e-6 after FEC
assuming a minimum received signal equal to the corresponding sensitivity level.
PER is calculated to BER by following equation.
PER = 1 – ( 1 – BER)
n
n : one unit size of FEC block
Measure the maximum error rate with a minimum received signal equal to the
corresponding sensitivity level.
© Hitachi, Ltd. 2014. All rights reserved.
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2.4 Maximum BER(2/2)
This Signal sensitivity level data as following table is used by coding scheme CTC.
Data is derived from MOPS; Appendix C （AeroMACS minimum receiver sensitivity would
be 2dB lower than indicated, if CTC is used)
Table3 Receiver Sensitivity
Modulation and Coding
Scheme
Rep. Factor DL
Sensitivity
UL (dBm)
CTC-64QAM-3/4
1
-76.50
CTC-64QAM-2/3
1
-78.50
CTC-16QAM-3/4
1
-82.50
CTC-16QAM-1/2
1
-86.00
CTC-QPSK-3/4
1
-88.50
CTC-QPSK-1/2
1
-91.50
CTC-QPSK-1/2
2
-94.50
UL 64QAM is option for BS reception
© Hitachi, Ltd. 2014. All rights reserved.
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2.5 Security Service(1/2)
Regarding SECURITY SERVICE functions, we think testing methods are as follows.
SARPS
Testing item
Testing
contents
Refer standard
4.6.1
integrity of
messages
confirmed by
CRC field
MOPS : 2.2.8.4.16.1.2
Cyclic Redundancy
Check(CRC)
4.6.2
ensure the
authenticity
of messages
confirmed by
CMAC field
MOPS : 2.2.7.5.4.4
Cipher-based message
authentication code
(CMAC)
4.6.4
confidentiality
of messages
confirmed by MOPS : 2.2.7.2.2.2.6
TEK function. Traffic Encryption Key
(TEK)
4.6.5
authenticate
users of the
system
confirmed by
EAP function
Testing
Method
Try 1 call between MS and
BS while measuring by
monitor function.
Confirm the sequence on
AeroMACS radio path（R1）,
and item field, which should
be confirmed in message.
are memorized by monitor.
MOPS : 2.2.7.2.2.2.2
EAP Authentication
© Hitachi, Ltd. 2014. All rights reserved.
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2.6 Security Service(2/2)
Following items need to be discussed.
SARPS
Testing item
Testing
Contents
status
Testing Items to be confirmed
4.6.3
availability of the
system
Should be
confirmed
The function which guarantee the transferred data
integrity would be confirmed by EAP function.
The definition of availability should be confirmed.
4.6.6
authorize the
permitted actions
of users
(authorized uses
during
unauthorized
events)
Should be
confirmed
This is not confirmed by equipment level, but
should be confirmed by system level.
The definition of permitted action should be
cleared.
Confirm authorized uses during unauthorized
events.
4.6.7
prevent intrusion
from lower
integrity
information domain
to higher integrity
information domain
Should be
confirmed
This is not confirmed by equipment level, but
should be confirmed by system level.
How to prevent intrusion method should be
defined.
© Hitachi, Ltd. 2014. All rights reserved.
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