Multiplexing and transmission of multiple data streams in a...

H - Electricity – 04 – L

Patent

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H04L 5/00 (2006.01)

Patent

CA 2693924

Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in 'super-frames'. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

L'invention concerne des techniques de multiplexage et de transmission de flux de données multiples. La transmission des flux de données multiples s'effectue dans des 'super-trames'. Chaque super-trame présente une durée préétablie et est en outre divisée en plusieurs trames (p. ex. quatre). Chaque bloc de données pour chaque super-trame est codé en externe pour générer un bloc de codes correspondant. Chaque bloc de codes est divisé en plusieurs sous-blocs, et chaque paquet de données de chaque bloc de codes est codé en interne et modulé pour générer des symboles de modulation pour le paquet. Les multiples sous-blocs de chaque bloc de codes sont transmis dans les multiples trames de la même super-trame, un sous-bloc par trame. Chaque flux de données reçoit en attribution, d'une part un certain nombre d'unités de transmission dans chaque super-trame, d'autre part des unités de transmission spécifiques pour assurer une mise en paquets efficace. Un dispositif sans fil peut choisir et recevoir des flux de données individuels.

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