RLP retransmission for CDMA communication systems

Details RLP retransmission for CDMA communication systems RLP retransmission for CDMA communication systems

2006-01-17

2006-01-17

Pezzlo, John (Department: 2662)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S342000, C370S441000

Reexamination Certificate

active

06987780

ABSTRACT:
Techniques for retransmitting data via RLP in a CDMA (e.g., cdma2000) system with a first retransmission mechanism provided by the RLP and a second retransmission mechanism provided by an HARQ-CF. In one method, missing RLP frames are first detected (e.g., by a receiver RLP). A dynamic timer is then maintained (e.g., by a receiver HARQ-CF) for each RLP frame detected to be missing. The dynamic timers are event-driven and have variable time durations. Each dynamic timer is updated based on events known to the receiver HARQ-CF. Fixed timers with fixed time durations may also be maintained (e.g., by the receiver RLP) for the missing RLP frames. Whether or not a missing RLP frame is lost is determined based on the dynamic timer and the fixed timer (if any) maintained for the RLP frame. A NAK may be issued for retransmission of each RLP frame deemed to be lost.

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