Transmit power reduction for a wireless device with multiple...

H - Electricity – 04 – B

Patent

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Details

H04B 7/06 (2006.01) H04B 7/005 (2006.01)

Patent

CA 2590659

A wireless device is equipped with multiple (e.g., two) antennas, which may be of different designs. Each antenna interacts with the wireless environment in a different manner and achieves different scattering effect. The wireless device has one transmit signal path for each antenna. Each transmit signal path generates an RF output signal for transmission from the associated antenna. The wireless device controls the operation of one or more transmit signal paths to achieve a larger received signal level at a receiving base station. The wireless device may (1) autonomously adjust the transmit signal path(s) without relying on any feedback from the base station or (2) adjust the transmit signal path(s) based on transmit power control (TPC) commands received from the base station. The wireless device may selectively enable and disable each transmit signal path, vary the phase and/or gain of each transmit signal path, and so on.

L'invention concerne un dispositif sans fil équipé de plusieurs antennes (par exemple, deux), pouvant présenter une conception différente. Chaque antenne interagit avec l'environnement sans fil de manière différente et produit un effet de diffusion différent. Le dispositif sans fil comprend un chemin de signaux d'émission pour chaque antenne. Chaque chemin de signaux d'émission génère un signal de sortie RF pour une transmission à partir de l'antenne associée. Le dispositif sans fil commande le fonctionnement d'un ou de plusieurs chemins de signaux d'émission afin d'obtenir un niveau de signal reçu plus important au niveau d'une station de base de réception. Ledit dispositif sans fil peut : (1) ajuster de manière autonome le ou les chemins de signaux d'émission sans se fier à un retour de la station de base, ou (2) ajuster les chemins de signaux d'émission en fonction de commandes de régulation de puissance d'émission (TPC) reçues à partir de la station de base. Ledit dispositif sans fil peut sélectivement activer ou désactiver chaque chemin de signaux d'émission, faire varier la phase et/ou le gain de chaque chemin de signaux d'émission, etc.

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