Method and apparatus for transmitting non-linear state information for compensating nonlinearity of transmitter in wireless communication system

A method performed by a second entity receiving data in a wireless communication system, the method comprising:

• receiving, from a first entity, a data set for learning nonlinearity compensation models;
• learning, based on the data set, the nonlinearity compensation models for compensating a nonlinearity of a transmission power of a signal transmitted from the first entity;
• in case that the nonlinearity changes, receiving, from the first entity, a nonlinearity state indicator, wherein the nonlinearity state indicator is received based on a signaling type corresponding to a periodicity with which the nonlinearity changes;
• identifying a nonlinearity compensation model based on the nonlinearity state indicator;
• and
• receiving, from the first entity, data based on the nonlinearity compensation model corresponding to the nonlinearity state indicator.

A first entity transmitting data in a wireless communication system, the first entity comprising:

• a transceiver;
• and
• a controller configured to:
• transmit, to a second entity via the transceiver, a data set for learning nonlinearity compensation models,
• detect a change in a nonlinearity of a transmission power of a signal transmitted from the first entity,
• identify a periodicity with which the nonlinearity changes,
• based on a signaling type corresponding to the periodicity, transmit, to the second entity via the transceiver, a nonlinearity state indicator for changing a nonlinearity compensation model to be applied in the second entity, the nonlinearity state indicator corresponding to the change in nonlinearity, and
• transmit, to the second entity via the transceiver, data according to the nonlinearity state indicator.

A second entity receiving data in a wireless communication system, the second entity comprising:

• a transceiver;
• and
• a controller configured to:
• receive, from a first entity via the transceiver, a data set for learning nonlinearity compensation models,
• learn, based on the data set, the nonlinearity compensation models for compensating a nonlinearity of a transmission power of a signal transmitted from the first entity,
• in case that the nonlinearity changes, receive, from the first entity via the transceiver, a nonlinearity state indicator, wherein the nonlinearity state indicator is received based on a signaling type corresponding to a periodicity with which the nonlinearity changes,
• identify a nonlinearity compensation model based on the nonlinearity state indicator, and
• receive, from the first entity via the transceiver, data based on the nonlinearity compensation model corresponding to the nonlinearity state indicator.