H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/18 (2006.01)
Patent
CA 2697010
An apparatus and method for transmitting/receiving a Hybrid Automatic Repeat reQuest (HARQ) Acknowledge/Negative acknowledge (ACK/NACK) signal in a mobile communication system. The present invention distributes a CDM segment, to which an ACK/NACK signal is mapped, in the frequency domain of an OFDM symbol, and repeatedly transmits the CDM segment, thereby providing diversity gain in the time-frequency domain. Further, the present invention provides a mapping rule for distributing transmit power between OFDM symbols to which the ACK/NACK signal is mapped and transmitted, thereby preventing the case where a particular OFDM symbol is power-overloaded, and thus contributing to improvement of the entire system performance.
La présente invention concerne un appareil et un procédé de transmission/réception du signal d'accusé de réception/d'accusé de réception négatif hybride de système détecteur d'erreurs avec demande de répétition dans un système de communications mobiles. La présente invention distribue un segment CDM, auquel est mappé un signal ACK/NACK, dans le domaine fréquentiel d'un symbole OFDM, et transmet itérativement le segment CDM, fournissant ainsi un gain de diversité dans le domaine temporel et fréquentiel. En outre, la présente invention concerne une règle de mappage pour la distribution de puissance entre des symboles OFDM auxquels le signal ACK/NACK est mappé et transmis, évitant ainsi le cas où un symbole OFDM particulier est surchargé de puissance, contribuant donc à l'amélioration de la performance globale du système.
Han Jin-Kyu
Kim Young-Bum
Kwon Hwan-Joon
Lee Ju-Ho
Zhang Jianzhong
Marks & Clerk
Samsung Electronics Co. Ltd.
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