Fast H-ARQ acknowledgement generation method using a stopping rule for turbo decoding
AssigneeInterDigital Technology Corporation
InventorsSung-Hyuk Shin, Nader Bolourchi
Life of this patent
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Abstract
A stopping rule for Turbo decoding that is applied for both good and bad code blocks is disclosed. If the iteration either converges or diverges, decoding is terminated. In an alternative embodiment, the result of the stopping rule testing may be used for H-ARQ acknowledgement generation: if the iteration converges, an ACK is generated and if the iteration diverges, a NACK is generated. Optionally, the maximum number of decoding iterations may be dynamically selected based on MCS levels.
Claims18
A method for improving hybrid automatic repeat request (H-ARQ) performance in an iterative turbo decoder, the method comprising:
- determining if a decoding iteration diverges;
- and
- terminating performance of further iterations if it is determined that the latest iteration diverges.
A wireless transmit/receive unit (WTRU) comprising:
- a decoder for iteratively decoding a turbo code block;
- a stopping rule decision unit configured for determining if a latest decoding iteration diverges, and for terminating the iterative decoding if it is determined that the latest iteration is diverging.
Dependencies are inferred from the claim text.