US 12,500,640 B2 · Beamformer solicited sounding

Abstract

Example implementations are directed to methods and systems employing a solicited sounding protocol that includes an efficient communication sequence for operating a wireless transceiver transmitting a sounding trigger to one or more beamformees via a forward channel, receiving at least one dedicated training signal from the one or more beamformees via a reverse channel in response to the sounding trigger, and for each of the received dedicated training signal. The method also includes estimating forward CSI derived based on the dedicated training signal from an associated beamformee; and where subsequent packets are precoded with precoding derived from the forward CSI for transmission to the associated beamformee via the forward channel. Example aspects including scheduling multiple dedicated training signals from one or more beamformees based on a single sounding trigger.

Claims20

Dependent claims

A method for operating a wireless transceiver, the method comprising:

receiving a request to perform sounding on behalf of one or more beamformees;
determining a sounding control scheme on behalf of the one or more beamformees;
transmitting a sounding trigger to the one or more beamformees via a forward channel, the sounding trigger conveying aspects of the sounding control scheme, a training condition to be satisfied prior to the one or more beamformees is to respond to the sounding trigger, the training condition relating to at least one of a traffic type, location information, or a predicted dwell time;
and
receiving at least one dedicated training signal from the one or more beamformees via a reverse channel in response to the condition of the sounding trigger being satisfied and according to the sounding control scheme, the at least one dedicated training signal including a partial bandwidth training signal.

2 more elements

One or more non-transitory computer-readable media containing instructions which, when executed by one or more processors, cause a system to perform operations, the operations comprising:

receive a request to perform sounding on behalf of one or more beamformees;
determine a sounding control scheme on behalf of one or more beamformees;
transmit a sounding trigger to the one or more beamformees via a forward channel, the sounding trigger to convey an aspect of the sounding control scheme, wherein a training condition to be satisfied prior to the one or more beamformees is to respond to the sounding trigger, the training condition relating to at least one of a traffic type, location information, or a predicted dwell time;
and
receive at least one dedicated training signal from the one or more beamformees via a reverse channel in response to the condition being satisfied, the at least one dedicated training signal including a partial bandwidth training signal.

2 more elements

Dependencies are inferred from the claim text.

Beamformer solicited sounding

Life of this patent

Beamformer solicited sounding

Life of this patent

Abstract

Claims20