System Description

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72 of 173
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Issued Date
:
Feb. 14, 2020
Form version: 181113
FCC SAR TEST REPORT
Report No. : FA9O2119
Special subframe (30720T
s
): Normal cyclic prefix in downlink (UpPTS)
Special subframe
configuration
Normal cyclic prefix in
uplink
Extended cyclic prefix in
uplink
Uplink duty factor in one
special subframe
0~4
7.13%
8.33%
5~9
14.3%
16.7%
Special subframe(30720T
s
): Extended cyclic prefix in downlink (UpPTS)
Special subframe
configuration
Normal cyclic prefix in
uplink
Extended cyclic prefix in
uplink
Uplink duty factor in one
special subframe
0~3
7.13%
8.33%
4~7
14.3%
16.7%
The highest duty factor is resulted from:
i. Uplink-downlink configuration: 0. In a half-frame consisted of 5 subfames, uplink operation is in 3 uplink subframes
and 1 special subframe.
ii. special subframe configuration: 5-9 for normal cyclic prefix in downlink, 4-7 for extended cyclic prefix in downlink
iii. for special subframe with extended cyclic prefix in uplink, the total uplink duty factor in one half-frame is:
(3+0.167)/5 = 63.3%
iv. for special subframe with normal cyclic prefix in uplink, the total uplink duty factor in one half-frame is:
(3+0.143)/5 = 62.9%
v. For TDD LTE SAR measurement, the duty cycle 1:1.59 (62.9 %) was used perform testing and considering the
theoretical duty cycle of 63.3% for extended cyclic prefix in the uplink, and the theoretical duty cycle of 62.9% for
normal cyclic prefix in uplink, a scaling factor of extended cyclic prefix 63.3%/62.9% = 1.006 is applied to scale-up the
measured SAR result. The scaled TDD LTE SAR = measured SAR (W/kg)* Tune-up Scaling Factor* scaling factor for
extended cyclic prefix.