Granted Patent B2

US 12,647,198 · App. 18/260,242 · Granted Jun 2, 2026

Inventors: Hamed Farhadi (Stockholm, SE); Pål Frenger (Linköping, SE); Niklas Wernersson (Kungsängen, SE); Ulf Gustavsson (Gothenburg, SE)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

H04L1/0003H04L1/0009H04L1/0015

Abstract

Claims (36)

1 . A method for a device to transmit data in a wireless communications network, comprising:

acquiring a current value of temperature and output power at a power amplifier of the device;

determining a level of performance for a modulation or coding scheme attainable for transmission with the current value of the temperature and the output power;

selecting, based on the determined level of performance, a modulation or coding scheme allowing successful data transmission from the device; and

performing data transmission applying the selected modulation or coding scheme.

2 . The method of claim 1 , wherein the level of performance being determined from a look-up table associating levels of performance with the temperature and the output power.

3 . The method of claim 1 , wherein the level of performance being determined by computing a function indicating the level of the performance as a function of the current value of the temperature and the output power.

4 . The method of claim 1 , wherein the device is a radio base station.

5 . The method of claim 1 , wherein the level of performance is error vector magnitude (EVM), adjacent channel leakage ratio (ACLR), or intermodulation distortion (IMD).

6 . The method of claim 1 , further comprising:

allowing components of the power amplifier having been inactive to warm up to a first temperature where the device applies a lower-order modulation constellation before the components reach a higher temperature where the device applies a higher-order modulation constellation.

7 . A method for a device to receive data in a wireless communications network, comprising:

acquiring a current value of temperature for an oscillator of a radio frequency hardware of the device;

determining a level of error vector magnitude (EVM) with the current value of temperature;

selecting, based on the determined level of EVM, a demodulation scheme allowing successful data reception for the device; and

performing data reception applying the selected demodulation scheme.

8 . A device to transmit data in a wireless communications network, the device comprising:

a processing unit; and

a memory, said memory containing instructions which, when executed by said processing unit, cause the device to:

acquire a current value of temperature and output power at a power amplifier of the device;

determine a level of performance for a modulation or coding scheme attainable for transmission with the current value of the temperature and the output power;

select, based on the determined level of performance, a modulation or coding scheme allowing successful data transmission from the device; and

perform data transmission applying the selected modulation or coding scheme.

9 . The device of claim 8 , further to determine the level of performance from a look-up table associating levels of performance with the temperature and the output power.

10 . The device of claim 8 , further to determine the level of performance by computing a function indicating the level of the performance as a function of the current value of the temperature and the output power.

11 . The device of claim 8 , wherein the device is a radio base station.

12 . The device of claim 8 , wherein the level of performance is error vector magnitude (EVM), adjacent channel leakage ratio (ACLR), or intermodulation distortion (IMD).

13 . The device of claim 8 , further to:

allow components of the power amplifier having been inactive to warm up to a first temperature where the device applies a lower-order modulation constellation before the components reach a higher temperature where the device applies a higher-order modulation constellation.

14 . A device to receive data in a wireless communications network, the device comprising:

a processing unit; and

a memory, said memory containing instructions which, when executed by said processing unit, cause the device to:

acquire a current value of temperature for an oscillator of a radio frequency hardware of the device;

determine a level of error vector magnitude (EVM) with the current value of the temperature;

select, based on the determined level of EVM, a demodulation scheme allowing successful data reception for the device; and

perform data reception applying the selected demodulation scheme.

Assignments (1)

Continuity (1)

References Cited (22)