LG LG-UD90c, Service Manual

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LG-KG90C
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by the base station and is characterized by the use of a challenge-specific random number(i.e.,
RANDU) instead of the random variable broadcast globally(RAND).
Unique Random Variable(RANDU). A 24-bit random number generated by the base station in
support of the Unique Challenge-Response procedure.
Universal Coordinated Time(UTC). An internationally agreed-upon time scale maintained by the
Bureau International de l’Heure(BIH) used as the time reference by nearly all commonly available time
and frequency distribution systems i.e., WWW, WWVH, LORAN-C, Transit, Omega, and GPS.
UTC. Universal Temps Coordine. See Universal Coordinated Time.
Voice Channel . See Analog Voice Channel.
Voice Mobile Attenuation Code(VMAC). A 3-bit field in the Extended Address Word commanding
the initial mobile power level when assigning a mobile station to an analog voice channel.
Voice Privacy. The process by which user voice transmitted over a CDMA Traffic Channel is a
afforded a modest degree of protection against eavesdropping over the air.
Walsh Chip. The shortest identifiable component of a Walsh function. There are 2
N
Walsh chips
in one Walsh function where N is the order of the Walsh function. On the Forward CDMA channel one
Walsh chip equals 1/1.2288MHz, or 813.802…ns. On the Reverse CDMA Channel, one Walsh chip
equals 4/1.2288MHz, or 3.255…
㎲
.
Walsh Function . One of 2
N
time orthogonal binary functions (note that the functions are orthogonal
after mapping ‘0’ to 1 and ‘1’ to –1).
Zone-Based Registration . An autonomous registration method in which the mobile station registers
whenever it enters a zone that is not in the mobile station’s zone list.
㎲
. Microsecond
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