Huawei ME909 Series - Page 82

HUAWEI ME909 Series LTE LGA Module
Hardware Guide
Appendix B Acronyms and
Abbreviations
Issue V0.3 (2013-05-21)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
82
Acronym or Abbreviation
Expansion
PDU
Protocol Data Unit
PID
Product Identity
PMU
Power Management Unit
RF
Radio Frequency
RoHS
Restriction of the Use of Certain Hazardous
Substances
SMS
Short Message Service
TBD
To Be Determined
TIS
Total Isotropic Senstivity
TRP
Total Radiated Power
TTFF
Time to First Fix
TVS
Transient Voltage Suppressor
UART
Universal Asynchronous Receiver-Transmitter
UL
Up Link
UMTS
Universal Mobile Telecommunications System
USB
Universal Serial Bus
USIM
Universal Subscriber Identity Module
VIP
Vendor IDentity
VSWR
Voltage Standing Wave Ratio
WEEE
Waste Electrical and Electronic Equipment
WCDMA
Wideband Code Division Multiple Access
WWAN
Wireless Wide Area Network
RFU
For future use
AP
Application process