Method, apparatus, and system for transmitting and receiving...

H - Electricity – 04 – J

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H04J 11/00 (2006.01)

Patent

CA 2605405

A method apparatus and system for efficiently transmitting and receiving channels are provided in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM). A multiplexing scheme differs according to a channel when a transmitter transmits a packet data channel, a common control channel and a control channel designated for a particular user. Uncoded 1-bit information is broadly dispersed in frequency and time domains using multiplexing technology for maximizing diversity gain in a channel for transmitting information of at least one bit to a particular user like an acknowledgement (ACK) channel. The transmitter converts a sequence obtained by multiplexing multiple bits to be transmitted to a plurality of users to parallel signals, and broadly disperses the parallel signals in the time and frequency domains. When the uncoded 1-bit information is transmitted, reception reliability is improved because channel coding and transmission are efficiently performed using a small amount of resources.

L'invention concerne un procédé et un appareil de transmission et de réception efficace de canaux dans un système de communication basé sur le multiplexage par répartition orthogonale de fréquence (OFDM). Un mécanisme de multiplexage change selon le canal lorsqu'un émetteur émet un canal de données par paquet, un canal de commande commun et un canal de commande designé pour un utilisateur particulier. Des informations monobinaires non codées sont largement dispersées dans les domaines de fréquence et temporel au moyen d'une technologie de multiplexage pour la maximisation du gain de diversité dans un canal pour l'émission d'informations d'au moins un bit à un utilisateur particulier, tel qu'un canal d'accusé réception (ACK). L'émetteur convertit une séquence obtenue par le multiplexage de bits multiples destinés à être transmis à une pluralité d'utilisateurs en signaux parallèles, et disperse largement les signaux parallèles dans les domaines temporels et de fréquence. Lorsque les informations monobinaires non codées sont transmises, la fiabilité de la réception est améliorée car le codage et l'émission de canaux sont effectués efficacement au moyen d'une petite quantité de ressources.

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