General Introduction - LG VX9100 Service Manual

VX9100
The VX9100 phone has been designed to operate on the latest digital mobile communication technology, Code
Division Multiple Access (CDMA). This CDMA digital technology has greatly enhanced voice clarity and can
provide a variety of advanced features. Currently, CDMA mobile communication technology has been
commercially used in Cellular and Personal Communication Service (PCS). The difference between them is the
operating frequency spectrum. Cellular uses 800MHz and PCS uses 1.9GHz. The VX9100 support GPS Mode, we
usually call it tri-band phone. Also, VX9100 works on Advanced Mobile Phone Service (S-GPS). We call it dual-
mode phone. If one of the Cellular, PCS base stations is located nearby, Call fail rate of triple-mode phone is less
than dual-mode phone or single-mode phone.
The CDMA technology adopts DSSS (Direct Sequence Spread Spectrum). This feature of DSSS enables the phone
to keep communication from being crossed and to use one frequency channel by multiple users in the same specific
area, resulting that it increases the capacity 10 times more compared with that in the analog mode currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF power Control technologies are combined into this phone to
reduce the call being interrupted in a middle of talking over the phone.
Cellular and PCS CDMA network consists of MSO (Mobile Switching Office), BSC (Base Station Controller), BTS
(Base station Transmission System), and MS (Mobile Station). The following table lists some major CDMA
Standards.
CDMA Standard
Basic air interface
Network
Service
1x EV-DO related
interface
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Only for training and service purposes

General Introduction

General Introduction
Designator
TIA/EIA-95A
TSB-74
ANSI J-STD-008
TIA/EIA-IS2000
TIA/EIA/IS-634
TIA/EIA/IS-651
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-96-B
TIA/EIA/IS-637
TIA/EIA/IS-657
IS-801
TIA/EIA/IS-707-A
TIA/EIA/IS-856
TIA/EIA/IS-878
TIA/EIA/IS-866
TIA/EIA/IS-890
Description
CDMA Dual-Mode Air Interface
14.4kbps radio link protocol and inter-band operation
IS-95 adapted for PCS frequency band CDMA2000
1xRTT Air Interface
MAS-BS
PCSC-RS
Intersystem operations
Non-signaling data comm.
Speech CODEC
Short Message Service
Packet Data
Position Determination Service (gpsOne)
High Speed Packet Data
CDMA2000 High Rate Packet Data Air Interface
1x EV-DO Inter-Operability Specification for HRPD
Access Network Interface
Recommended Minimum Performance Standards for
High Rate Packet Data Access Terminal
Test Application Specification (TAS) for High Rate
Packet Data Air Interface
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