Product Info

Report No: CCISE191202301-V01
Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912023
No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road,
Bao’an District, Shenzhen, Guangdong, China
Telephone: [phone] Fax: [phone], E-mail: [e-mail] Page 60 of 171
15.5 Multi-Band Simultaneous Transmission Considerations
 Simultaneous Transmission Capabilities
According to FCC KDB Publication 447498 D01v06, transmitters are considered to be transmitting
simultaneously when there is overlapping transmission, with the exception of transmissions during network
hand-offs with maximum hand-off duration less than 30 seconds. Possible transmission paths for the EUT are
shown in below Figure and are color-coded to indicate communication modes which share the same path.
Modes which share the same transmission path cannot transmit simultaneously with one another.
Fig.15.1 Simultaneous Transmission Paths
 Simultaneous Transmission Procedures
This device contains transmitters that may operate simultaneously. Therefore simultaneous transmission
analysis is required. Per FCC KDB 447498 D01v06, simultaneous transmission SAR test exclusion may be
applied when the sum of the 1-g SAR for all the simultaneous transmitting antennas in a specific a physical test
configuration is ≤ 1.6 W/kg. When standalone SAR is not required to be measured, per FCC KDB 447498
D01v06 4.3.2), the following equation must be used to estimate the standalone 1g SAR for simultaneous
transmission assessment involving that transmitter.
Estimated SAR =
5.7
)(GHzf

mmDistance, Separation Min.
mWchannel, ofpower Max.
Mode
Max. tune-up
Power (dBm)
Exposure Position
Head
Body
Hotspot
Test Distance (mm)
0
10
10
Bluetooth
6
Estimated SAR (W/kg)
0.165
0.083
0.083
Note:
1. When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine estimated
SAR.
 Multi-Band simultaneous Transmission Consideration
Simultaneous
Transmission
Consideration
Position
Applicable Combination
Head
WWAN (Voice) + WLAN 2.4 GHz
WWAN (Voice) + Bluetooth
Body
WWAN (Voice) + WLAN 2.4 GHz
WWAN (Voice) + Bluetooth
Hotspot
WWAN (Data) + WLAN 2.4 GHz
WWAN (Data) + Bluetooth
Note:
1. WLAN 2.4GHz Band and Bluetooth share the same antenna, and cannot transmit simultaneously.
2. GSM/WCDMA/LTE shares the same antenna, and cannot transmit simultaneously.
3. The Report SAR summation is calculated based on the same configuration and test position.
4. Per KDB 447498 D01v06, simultaneous transmission SAR is compliant if,
i. Scalar SAR summation < 1.6 W/kg.
ii. SPLSR = (SAR
1
+ SAR
2
)
1.5
/ (min. separation distance, mm), and the peak separation distance is determined
from the square root of [(x
1
-x
2
)
2
+ (y
1
-y
2
)
2
+ (z
1
-z
2
)
2
], where (x
1
, y
1
, z
1
) and (x
2
, y
2
, z
2
) are the coordinates of the
extrapolated peak SAR locations in the zoom scan If SPLSR ≤ 0.04, simultaneously transmission SAR
measurement is not necessary
iii. Simultaneously transmission SAR measurement, and the Reported multi-band SAR < 1.6 W/kg
Path 1
GSM/WCDMA/LTE
Path 2
Bluetooth/WLAN