0. SARPS Validation Discussion material on Web-EX
IP01 ACP WG S_28 Mar Web meeting
ICAO ACP WG-S
SARPS Validation Discussion material on Web-EX
2014/3/28
Hitachi Ltd., 1

1. Validation items and major Conditions
1.Validation items for Hitachi’s BS
SPECTRAL MASK AND EMISSION
Maximum BER
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 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. 2

2. Appendix 3

3. 1. Emission Test Table 1 Spectral Mask Parameter Tx Spectral Mask
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.
　　　　 A　 B　 C　　　 　　C´　 　　 　D dB
-26
-32
--50
Tx Spectral Mask
-40
Table 1 Spectral Mask Parameter
Frequency
Band(MHz) A B C C´ D
5MHz
2.25
2.5
2.75 ５
7.5
MHｚ 4

4. 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. 5

5. 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 + 4dB
Second adjacent channel(+/-10MHz)
3.5.5
Smin + 29dB
3.5.6
Smin + 23dB
Since the Uplink 64QAM is optional, BS is not applicable for Receiving 64QAM. 6

6. 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. 7

7. 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
-78.50
CTC-16QAM-3/4
-82.50
CTC-16QAM-1/2
-86.00
CTC-QPSK-3/4
-88.50
CTC-QPSK-1/2
-91.50 2
-94.50
UL 64QAM is option for BS reception 8

8. 2.5 Security Service(1/2)
Regarding SECURITY SERVICE functions, we think testing methods are as follows.
SARPS
Testing item
Testing contents
Refer standard
Testing
Method
4.6.1
integrity of messages
confirmed by CRC field
MOPS :
Cyclic Redundancy Check(CRC)
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.
4.6.2
ensure the authenticity of messages
confirmed by CMAC field
MOPS :
Cipher-based message authentication code (CMAC)
4.6.4
confidentiality of messages
confirmed by TEK function.
MOPS :
Traffic Encryption Key (TEK)
4.6.5
authenticate users of the system
confirmed by EAP function
MOPS :
EAP Authentication 9

9. Testing Items to be confirmed
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)
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
How to prevent intrusion method should be defined. 10

10. 本日は有難うございました。 11