LG LG-UD90c, Руководство по обслуживанию

Страница: 59 / 88

LG-KG90C
59
Order. A type of message that contains control codes for either the mobile station or the base station.
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.
Z3X-BOX.COM