Methods and apparatus for including communication mode...

H - Electricity – 04 – W

Patent

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H04W 48/08 (2009.01) H04W 56/00 (2009.01)

Patent

CA 2696294

Methods and apparatus for including mode information in a wireless transmission frame, which is useful for system acquisition. In particular, a first information bit is provided in a preamble of a transmission frame, where the bit is configured to indicate that a wireless communication system is operating according to either a time division duplex (TDD) mode or a frequency division duplex (FDD) mode. The addition of a single bit minimally affects the resources of the preamble. Additionally, another bit resource already present in the preamble for normally communicating whether FDD transmissions are full duplex or half-duplex transmissions, may be further allocated to indicate partitioning information concerning TDD mode transmissions when the first bit indicates TDD mode, thus affording additional information communicated in the frame without increasing preamble resources.

L'invention concerne des procédés et un appareil permettant d'inclure des informations de mode dans une trame de transmission sans fil, qui est utile pour l'acquisition d'un système. En particulier, un premier bit d'information est appliqué dans un préambule d'une trame de transmission où le bit est configuré pour indiquer que le système de communication sans fil fonctionne conformément soit à un mode de duplex par répartition dans le temps (TDD), soit à un mode de duplex par répartition en fréquence (FDD). L'ajout d'un unique bit affecte de manière minimale les ressources du préambule. De plus, une autre ressource binaire, déjà présente dans le préambule pour transmettre normalement si les transmissions FDD sont des transmissions de type duplex intégral ou semi-duplex, peut être également allouée pour indiquer la partition des informations concernant les transmissions en mode TDD lorsque le premier bit indique le mode TDD, en permettant ainsi de communiquer des informations supplémentaires dans la trame sans augmenter les ressources du préambule.

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