Method for selecting a transmission mode

摘要

A method and device are provided for selecting a transmission mode, for a first telecommunications entity having a plurality of different modes for transmitting a communications signal to a second telecommunications entity. The various transmission modes provide the same data rate D. The method includes: for a given transmission mode, determining the value of a first metric α that measures degradation relating to a given distance d stemming from the transmission medium of the communications signal for a given environment compared with a reference model for the transmission medium, as a result of a multi-path effect and/or of an attenuation effect of the transmission medium; and comparing values of the metric α for different modes in order to select at least one transmission mode.

主权项

1. A method comprising:
selecting a transmission mode, for a first telecommunications entity having a plurality of different modes for transmitting a communications signal to a second telecommunications entity, the various transmission modes providing the same data rate D and being associated with one or several transmission interfaces, wherein selecting comprises: for a given transmission mode, determining the value of a first metric α that evaluates a relative degradation relating to a given distance d stemming from a transmission medium of the communications signal for a given environment compared with a reference model of the transmission medium, as a result of a weighted sum of a multi-path channel margin corresponding to a relative degradation associated with a multi-path effect and of a narrow band channel margin corresponding to a relative degradation associated with an attenuation effect of the transmission medium on the transmitted signal; and comparing values of the first metric α for different modes in order to select at least one transmission mode.