US 2006/0067238 A1 · Data unit management in communications

Abstract

In Radio Link Control (RLC) apparatus, a mechanism is provided for detecting missing or corrupted data units at the receiving end of a transmission link, requesting retransmission and then monitoring the response to the retransmission request. Distinctively, a receiving communications entity 300 is equipped to act on a nil response. If no data unit is retransmitted, the receiving entity triggers at least one repeat retransmission request. This is the case even if no further data unit is received after the retransmission request is triggered. Retransmission requests are repeated up to a preset number, whereafter a different recovery mechanism is triggered.

Claims28

Dependent claims

Data unit management apparatus for use in communications receiving equipment in receiving data units over a transmission link, the apparatus comprising:

i) a data unit reception monitor for monitoring receipt of data units;
ii) a retransmission request sender for triggering the sending of at least one retransmission request in respect of one or more missing or corrupted data units;
and
iii) a retransmitted data unit monitor for monitoring receipt of one or more retransmitted data units,
wherein the retransmitted data unit monitor comprises a timer for timing a predetermined period, and is adapted to monitor receipt within the predetermined period of retransmitted data units.

2 more elements

Dependencies are inferred from the claim text.

Data unit management in communications

Life of this patent

Data unit management in communications

Life of this patent

Abstract

Claims28