Chapter 6. Glossary - LG LG511C Service Manual

LN510

CHAPTER 6. Glossary

CHAPTER 6. Glossary
General Terms
Abbreviated Alert. An abbreviated alert is used to remind the mobile station user that previously selected alternative
routing features are still active.
AC. See Authentication Center.
Access Attempt. A sequence of one or more access probe sequences on the Access Channel containing the same
message. See also Access Probe and Access Probe Sequence.
Access Channel. A Reserve CDMA Channel used by mobile stations for communicating to the base station. The
Access Channel is used for short signaling message exchanges such as call origination's, responses to pages, and
registrations. The Access Channel is a slotted random access channel.
Access Channel Message. The information part of an access probe consisting of the message body, length field, and
CRC.
Access Channel Message Capsule. An Access Channel message plus the padding.
Access Channel Preamble. The preamble of an access probe consisting of a sequence of all-zero frames that is sent
at the 4800bps rate.
Access Channel Request Message. An Access Channel message that is autonomously generated by the mobile
station. See also Access Channel Response Message.
Access Channel Response Message. A message on the Access Channel generated to reply to a message received
from the base station.
Access Channel Slot. The assigned time interval for an access probe. An Access Channel slot consists of an integer
number of frames. The transmission of an access probe is performed within the boundaries of an Access Channel slot.
Access Probe. One Access Channel transmission consisting of a preamble and a message. The transmission is an
integer number of frames in length and transmits one Access Channel message. See also Access Probe Sequence and
Access Attempt.
Access Probe Sequence. A sequence of one or more access probes on the Access Channel. The same Access
Channel message is transmitted in every access probe of an access attempt. See also Access Probe and Access
Attempt.
Acknowledgement. A Layer 2 response by the mobile station or the base station confirming that a signaling message
was received correctly.
Action Time. The time at which the action implied by a message should take effect.
Active Set. The set of pilots associated with the CDMA Channels containing Forward Traffic Channels assigned to a
particular mobile station.
Aging. A mechanism through which the mobile station maintains in its Neighbor Set the pilots that have been
recently sent to it from the base station and the pilots whose handoff drop timers have recently expired.
A-key. A secret, 64-bit pattern stored in the mobile station. It is used to generate update the mobile station's Shared
Secret Data. The A-key is used in the mobile station authentication process.
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