Multiplex communications – Wide area network – Packet switching
Patent
1995-01-24
1996-08-13
Chin, Wellington
Multiplex communications
Wide area network
Packet switching
370 951, 370 953, 3701101, 455 541, 455 671, H04J 314
Patent
active
055463800
ABSTRACT:
A unique method for supervising a cellular telephone call between a base station and a radio telephone of a TDMA cellular communications system includes the steps of determining (304) that the assigned time slot is expected to be received within a predetermined amount of time; detecting the presence of the assigned time slot (306) within the predetermined amount of time; detecting the presence of the assigned DVCC when the assigned time slot is detected (308); incrementing a bad slot counter (316) [if] responsive to the assigned time slot is not detected within the predetermined amount of time or [if] responsive to the assigned DVCC is not detected; and terminating the communication (322) [if] when the bad slot counter reaches a predetermined maximum value. A good slot counter is incremented (310) when the assigned DVCC is detected in a burst. The good slot counter is reset (318) [if] when the assigned DVCC is not detected in the next burst, and both counters are reset (314) [if] when the assigned DVCC is detected in consecutive bursts.
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Cahill Stephen V.
Prill Mark E.
Tomasi Peter A.
Chin Wellington
Kaschke Kevin D.
Motorola Inc.
Vu Huy D.
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