Patent · US Expired

Hybrid ARQ for packet data transmission

US6977888B1 · kind B1 · utility

166Cited by

15References

29Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

P{dot over (a)}l Frenger · Solna, SE
Erik Dahlman · Stockholm, SE
Stefan Parkvall · Bromma, SE

Key dates

Filing date	Sep 14, 2000
Grant date	Dec 20, 2005
Priority date	—
Expiry date	Dec 21, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2001/0098
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A hybrid ARQ scheme is used incremental data packet combining. In an example embodiment, the hybrid ARQ scheme with incremental data packet combining employs three feedback signaling commands: ACK, NACK, and LOST. Using these three feedback commands, the hybrid ARQ scheme with incremental data packet combining provides both robustness and good performance. This scheme is particularly advantageous in communication systems with unreliable communication channels, e.g., a fading radio channel, where forward error correction (FEC) codes are used and some of the code symbols are more important than other code symbols. Benefits include increased throughput and decreased delay of the packet data communication.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.