Systems and methods that utilize a capacity-based...

Details Systems and methods that utilize a capacity-based... Systems and methods that utilize a capacity-based...

H - Electricity

04

L

H04L 1/00 (2006.01) H04B 7/005 (2006.01) H04L 1/20 (2006.01)

Patent

CA 2591837

Techniques for utilizing a capacity-based effective signal-to-noise ratio (SNR) to improve wireless communication are described herein. In an embodiment, a mobile terminal can determine the effective SNR from a forward link channel using pilot/data symbols. The mobile terminal can convey the effective SNR to a base station. In order to minimize transmission overhead, the mobile terminal can quantize the effective SNR prior to transmitting it to the base station. In another embodiment, the base station can determine the effective SNR from a reverse link. The base station can utilize the effective SNR to facilitate scheduling transmissions from the mobile terminal, transmitting power control commands to the mobile terminal, and determining a supporting data rate for the mobile terminal, for example. Suitable SNRs include constrained, unconstrained, average, and/or approximated effective SNRs. In addition, various filters, such as an averaging filter, can be utilized to further process the effective SNR.

L'invention concerne des techniques permettant d'utiliser un rapport signal-bruit (SNR) efficace fondé sur la capacité afin d'améliorer des communications sans fil. Dans un mode de réalisation, un terminal mobile peut déterminer le SNR efficace à partir d'un canal de liaison aval au moyen de symboles pilote/données. Le terminal mobile peut transmettre le SNR efficace à une station de base. Afin de minimiser la surcharge de transmission, le terminal mobile peut quantifier le SNR efficace avant de transmettre celui-ci à la station de base. Dans un autre mode de réalisation, la station de base peut déterminer le SNR efficace à partir d'une liaison inverse. La station de base peut utiliser le SNR efficace pour faciliter la programmation de transmissions à partir du terminal mobile, transmettre des commandes de régulation de puissance au terminal mobile, et déterminer un débit binaire de support pour le terminal mobile, par exemple. Parmi les SNR appropriés, on peut citer des SNR efficaces limités, non limités, moyens, et/ou d'approximation. L'invention concerne en outre divers filtres, de type filtre de moyenne, à utiliser pour le traitement dudit SNR efficace.

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