Method and apparatus for transmitting reference signal in...

H - Electricity – 04 – J

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H04J 11/00 (2006.01) H04B 7/04 (2006.01)

Patent

CA 2762117

Provided are a method and an apparatus for transmitting a reference signal in a multi-antenna system. A terminal generates a plurality of reference signal sequences to which cyclic shift values different from each other are allocated, generates an orthogonal frequency division multiplexing (OFDM) symbol to which the plurality of reference signal sequences are mapped, and transmits the OFDM symbol to a base station through a plurality of antennas. The respective cyclic shift values allocated to the respective reference signal sequences are determined on the basis of a parameter n indicated by a cyclic shift field transmitted from a physical downlink control channel (PDCCH).

L'invention concerne un procédé et un appareil pour transmettre un signal de référence dans un système muliti-antenne. Un terminal génère plusieurs séquences de signaux de référence auxquelles sont affectées des valeurs de décalage cyclique qui diffèrent les unes des autres, génère un symbole de multiplexage par répartition orthogonale de la fréquence (MROF) avec lequel les séquences de signaux de référence sont mises en correspondance, et transmet le symbole MROF à la station de base par plusieurs antennes. Les valeurs de décalage cyclique respectives affectées aux séquences de signaux de référence respectives sont déterminées en fonction d'un paramètre n indiqué par un champ de décalage cyclique transmis depuis un canal physique de commande de liaison descendante (PDCCH).

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