EP 1419604 A1 20040519 - RETRANSMISSION METHOD AND APPARATUS FOR WIRELESS COMMUNICATIONS SYSTEMS
Title (en)
RETRANSMISSION METHOD AND APPARATUS FOR WIRELESS COMMUNICATIONS SYSTEMS
Title (de)
WIEDERHOLUNGSVERFAHREN UND WIEDERHOLUNGSEINRICHTUNG FÜR DRAHTLOSE KOMMUNIKATIONSSYSTEME
Title (fr)
APPAREIL ET PROCEDE DE RETRANSMISSION POUR SYSTEMES DE COMMUNICATIONS SANS FIL
Publication
Application
Priority
- CA 0201252 W 20020813
- US 31182801 P 20010814
Abstract (en)
[origin: WO03017560A1] A wireless communications system method and apparatus transmits packet data at a first rate (R1) selected to provide an acceptable packet error rate (PER) for a given wireless channel. Upon receipt of a request for retransmission of a data packet, the method and apparatus switch to a second rate (R2), lower than the first rate, for retransmitting the data packet. The overall transmission rate becomes R1/(1+PER1R1/R2), which is only slightly lower than that of the single rate retransmission R1/(1+ PER1), but the resulting PER=PER1PER2 is much smaller than PER1<2> for the case of single rate retransmission.
IPC 1-7
IPC 8 full level
CPC (source: EP)
H04L 1/0002 (2013.01); H04L 1/1803 (2013.01); H04L 1/1867 (2013.01); H04L 1/1806 (2013.01); H04L 1/1809 (2013.01)
Citation (search report)
See references of WO 03017560A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
CA 0201252 W 20020813; EP 02754029 A 20020813