LG VX5400, Service Manual

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Ordered Registration. A registration method in which the base station orders the mobile station to send registration
related parameters.
Overhead Message. A message sent by the base station on the Paging Channel to communicate base-station-specific
and system-wide information to mobile station.
Overload Class. The means used to control system access by mobile stations, typically in emergency or other
overload conditions. Mobile station are assigned one (or more) of sixteen overload classed, Access to the CDMA
system can then be controlled on a per class basis by persistence values transmitted by the base station.
Overload Control (OLC). A means reverse analog control channel accesses by mobile stations. Mobile station are
assigned one(or more) of sixteen control levels. Access is selectively restricted by a base station setting one or more
OLC bits in the Overload Control Global Action Message.
Packet. The unit of information exchanged between the service option applications of the base station and the mobile
station.
Padding. A sequence of bits used to fill from the end of a message to the end of a message capsule, typically to the
end of the frame or half frame. All bits in the padding are '0'.
Paging. The act of seeking a mobile station when a call has been placed to that mobile station.
Paging Channel (Analog). See Analog Paging Channel.
Paging Channel (CDMA). A code channel in a Forward CDMA Channel used for transmission of control
information and pages from a base station to a mobile station.
Paging Channel Slot. An 80ms interval on the Paging Channel. Mobile station operating in the slotted mode are
assigned specific slots in which day monitor messages from the base station.
Parameter-Change Registration. A registration method in which the mobile station registers when certain of its
stored parameters change.
Parity Check Bits. Bits added to a sequence of information bits to provide error detection, correction, or both.
Persistence. A probability measure used by the mobile station to determine if it should transmit in a given Access
Channel Slot.
Physical Layer. The part of the communication protocol between the mobile station and the base station that is
responsible for the transmission and reception of data. The physical layer in the transmitting station is presented a
frame by the multiplex sublayer and transforms it into an over-the-air waveform. The physical layer in the receiving
station transforms the waveform back into a frame and presents it to the multiplex sublayer above it.
Pilot Channel. An unmodulated, direct-sequence spread spectrum signal transmitted continuously by each CDMA
base station. The Pilot Channel allows a mobile station to acquire the timing of the Forward CDMA Channel,
provides a phase reference for coherent demodulation, and provides a means for signal strength comparisons between
base station for determining when to handoff.
Pilot PN Sequence. A pair of modified maximal length PN sequences with period 215 used to spread the Forward
CDMA Channel and the Reserve CDMA Channel. Different base station are identified by different pilot PN sequence
offsets.
Pilot PN Sequence Offset Index . The PN offset in units of 64 PN chips of a pilot, relative to the zero offset pilot PN
sequence.
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