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1. US20090103500 - Re-transmission capability in semi-persistent transmission

Office United States of America
Application Number 12288786
Application Date 23.10.2008
Publication Number 20090103500
Publication Date 23.04.2009
Grant Number 08320341
Grant Date 27.11.2012
Publication Kind B2
IPC
H04J 3/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
Applicants Nokia Corporation
Inventors Malkamaki Esa M.
Ojala Jussi K.
Lunden Jari Petteri
Agents Harrton & Smith
Title
(EN) Re-transmission capability in semi-persistent transmission
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.