A wireless device, a network node and methods therein for enabling and determining reference signal configurations in a wireless communications network

(canceled)

A wireless device for enabling a determination of a reference signal configuration for downlink transmissions in a wireless communications network, the wireless device being configured to:

• obtain information indicating a number of used transform coefficients of a total number of transform coefficients determined in a transform-based channel estimator in the wireless device upon receiving a first downlink transmission according to a first reference signal configuration, and determine, based on the obtained information, if the first reference signal configuration for downlink transmissions to the wireless device is to be modified or not.

(canceled)

18-19. (canceled)

A method performed by a network node for determining a reference signal configuration for downlink transmissions in a wireless communications network, the method comprising:

• obtaining information indicating if a first reference signal configuration for downlink transmissions to a wireless device is to be modified or not;
• and
• determining a second reference signal configuration for downlink transmissions to the wireless device based on the received information.

23-24. (canceled)

26-32. (canceled)

A method performed by a network node for determining a reference signal configuration for uplink transmissions in a wireless communications network, the method comprising:

• obtaining information indicating a number of used transform coefficients of a total number of transform coefficients determined in a transform-based channel estimator in the network node upon receiving an uplink transmission according to a first reference signal configuration;
• determining a second reference signal configuration for uplink transmissions in the wireless communications network based on the obtained information;
• configuring a wireless device for uplink transmissions according to the determined second reference signal configuration.

34-43. (canceled)