Institut Mines-telecom

Manuj Mukherjee

Aslan Tchamkerten

Chadi Jabbour

A channel sensing device for detecting preamble transmission by observing a channel sensing sequence of a length smaller than or equal to a maximum given length, the channel sensing device being implemented in a receiver, the channel sensing sequence includes one or more samples. The channel sensing device is configured to: receive input parameters comprising a target reliability metric, a receiver noise profile, the maximum given length, a received power, and a probability of there being a preamble; determine channel sensing parameters given the input parameters and according to the inimization of the average energy consumption per given length, the channel sensing parameters comprising a number of channel sensing phases, and a number of samples, a receiver power consumption value, and a preamble detection threshold corresponding to each of the channel sensing phases; perform a first channel sensing phase comprising: observing a batch of samples of the one or more samples by consuming the receiver power consumption value corresponding to the first phase channel sensing phase; applying a hypothesis test comprising the comparison of a value derived from the observed samples with the preamble detection threshold corresponding to the first channel sensing phase; deciding on the presence of a preamble or on performing a subsequent channel sensing phase based on the comparison and/or whether the number of channel sensing phases is greater than one; a subsequent channel sensing phase comprising: observing a batch of samples by consuming the receiver power consumption value corresponding to the channel sensing phase; applying a hypothesis test comprising the comparison of a value derived from all of the so far observed samples with the preamble detection threshold; deciding on the presence of a preamble or on performing a subsequent channel sensing phase based on the comparison and/or on a condition related to a number of performed channel sensing phases compared with the number of channel sensing phases.

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PARIS, France

Manuj Mukherjee