Technical Details - LG 285 Manual

Technical Details

The LG 285 is a trimode phone that
operates on both Code Division Multiple
Access (CDMA) frequencies: cellular
services at 800 MHz and Personal
Communication Services (PCS) at 1.9
GHz.
Also, the LG 285 works on Advanced
Mobile Phone Service (Amps). Since
this phone operates on these three
Wireless networks the call fail rate is
less than on a conventional dual-mode
or single-mode phone.
CDMA technology uses a feature called
DSSS (Direct Sequence Spread
Spectrum) that enables the phone to
keep communication from being
crossed and to use one frequency
channel by multiple users in the same
specific area. This results in a 10-fold
capacity increase when compared with
analog mode. In addition, features such
as soft/softer handoff, hard Handoff,
and dynamic RF power control
technologies combine to reduce call
interruptions.
The Cellular and PCS CDMA networks
consist of MSO (Mobile Switching
Office), BSC (Base Station Controller),
BTS (Base Station Transmission
System), and MS (Mobile Station).
Technical Details
* TSB -74: Protocol between an IS-95A system
and ANSI J-STD-008
1xRTT system receives twice as many
subscribers in the wireless section as IS-95. Its
battery life is twice as long as IS-95. High-speed
data transmission is also possible.
The following table lists some major CDMA
standards.
CDMA Standard
Designator
TIA/EIA/IS-
95A/B/C
Basic Air
Interface
TSB-74
ANSI J-STD-008
TIA/EIA-IS2000
TIA/EIA/IS-634
Network
TIA/EIA/IS/651
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-96-B
TIA/EIA/IS-99
Service
TIA/EIA/IS-637
TIA/EIA/IS-657
IS-801
TIA/EIA/IS-707-A
TIA/EIA/IS-97
TIA/EIA/IS-98
Performance
ANSI J-STD-018
ANSI J-STD-019
TIA/EIA/IS-125
Description
CDMA Trimode Air Interface
14.4kbps radio link protocol and
inter-band operations
IS-95 adapted for PCS frequency
band CDMA2000 1xRTT Air
Interface
MAS-BS
PCSC-RS
Intersystem operations
Non-signaling data comm.
Speech CODEC
Async Data and Fax
Short message service
Packet Data
Position Determination Service
High Speed Packet Data
Cellular base station
Cellular mobile station
PCS personal station
PCS base station
Speech CODEC
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