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1. EP2587706 - Improved re-transmission capability in semi-persistent transmission

Office European Patent Office
Application Number 12198949
Application Date 23.10.2008
Publication Number 2587706
Publication Date 01.05.2013
Publication Kind B1
IPC
H04L 1/18
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system
CPC
H04L 1/1812
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1812Hybrid protocols
H04L 1/1822
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1822involving configuration of ARQ with parallel processes
H04L 1/1854
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1829Arrangements specific to the receiver end
1854Scheduling and prioritising arrangements
H04L 1/1887
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
12by using return channel
16in which the return channel carries supervisory signals, e.g. repetition request signals
18Automatic repetition systems, e.g. van Duuren system ; ; ARQ protocols
1867Arrangements specific to the transmitter end
1887Scheduling and prioritising arrangements
Applicants NOKIA TECHNOLOGIES OY
Inventors MALKAMAKI ESA M
OJALA JUSSI K
LUNDEN JARI PETTERI
Designated States
Priority Data 08843087 23.10.2008 EP
26107 23.10.2007 US
Title
(DE) Verbesserte Neuübertragungsfähigkeit in semipersistenter Übertragung
(EN) Improved re-transmission capability in semi-persistent transmission
(FR) Amélioration de la capacité de réémission en émission semi-permanente
Abstract
(EN)
One or more hybrid automatic repeat request process identifications are configured for scheduling without associated control signaling. A particular HARQ process ID to be assumed for a given subframe is determined based on at least one of: a) system frame number; b) number of hybrid automatic repeat request processes that are allocated for semi-persistent scheduling; and c) periodicity for semi-persistent scheduling. In various embodiments: a) is broadcast and b) and c) are sent via RRC signaling; and the assumed particular HARQ process ID is determined as a function of [Current TTI/SP_Period] mod Num_SP_HARQ:wherein Current TTI is a number for the given subframe derived from the system frame number and the term [Current TTI/SP_Period] is rounded to an integer prior to the modulo operation; SP_Period is the periodicity of the semi-persistent scheduling; and Num_SP_HARQ is the number of hybrid automatic repeat request processes that are allocated for semi-persistent scheduling.

(FR)
Selon l'invention, une ou plusieurs identifications de processus de demande de répétition automatique hybride (HARQ) sont configurées pour une programmation sans signalisation de commande associée. Une ID de processus HARQ particulière à adopter pour une sous-trame donnée est déterminée sur la base d'au moins une caractéristique parmi : a) le numéro de trame système; b) le nombre de processus de demande de répétition automatique hybride attribués pour la programmation semi-permanente; et c) la périodicité de programmation semi-permanente. Dans divers modes de réalisation de l'invention : a) est diffusé, b) et c) sont envoyés via une signalisation RRC; et l'ID de processus HARQ particulière adoptée est déterminée en fonction de [TTI courant/SP_Period] mod Num_SP_HARQ], où le TTI courant est un numéro de la sous-trame donnée obtenu a partir du numéro de trame système et le terme [TTI courant/SP_Period] est arrondi à un nombre entier préalablement à l'opération modulo; SP_Period est la périodicité de la programmation semi-permanente; et Num_SP_HARQ est le nombre de processus de demande de répétition automatique hybride attribués pour la programmation semi-permanente.