Method for mapping physical hybrid automatic repeat request...

Details Method for mapping physical hybrid automatic repeat request... Method for mapping physical hybrid automatic repeat request...

H - Electricity

04

L

H04L 1/18 (2006.01)

Patent

CA 2715941

A method for mapping a physical hybrid automatic repeat request indicator channel (PHICH) is described. The method for mapping a PHICH includes determining an index of a resource element group transmitting a repetitive pattern of the PHICH, according to a ratio of the number of available resource element groups in a symbol in which the PHICH is transmitted and the number of available resource element groups in a first or second OFDM symbol, and mapping the PHICH to the symbol according to the determined index. In transmitting the PHICH, since efficient mapping is performed considering available resource elements varying with OFDM symbols, repetition of the PHICH does not generate interference between neighbor cell IDs and performance is improved.

L'invention porte sur un procédé pour le mappage d'un canal indicateur de demande de répétition automatique hybride physique (PHICH). Le procédé de mappage d'un PHICH comprend la détermination d'un indice d'un groupe d'éléments de ressource transmettant un motif répétitif du PHICH, selon un rapport du nombre de groupes d'éléments de ressource disponibles dans un symbole dans lequel le PHICH est transmis et le nombre de groupes d'éléments de ressource disponibles dans un premier ou second symbole de multiplexage par répartition orthogonale de la fréquence (OFDM), et le mappage du PHICH au symbole selon l'indice déterminé. Lors de la transmission du PHICH, étant donné qu'un mappage efficace est effectué en considérant des éléments de ressource disponibles qui varient avec les symboles OFDM, une répétition du PHICH ne génère pas d'interférence entre des identifiants de cellules voisines et la performance est améliorée.

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