Methods and apparatus for controlling a gain state of a wireless receiver operating in an idle mode

An electrical circuit, comprising:

• a processor;
• memory coupled to the processor;
• a communication subsystem coupled to the processor;
• a level detector configured to detect a signal level of a signal received in the communication subsystem;
• a state controller configured to provide one of a plurality of state values in response to the detected signal level from the level detector;
• the processor being configured to:
• read and store in memory a state value which was utilized for operating the communication subsystem during a wake-up period of the communication subsystem;
• cause the communication subsystem to enter into a sleep mode;
• cause the communication subsystem to exit from the sleep mode and enter into a current wake-up period;
• provide the stored state value to the communication subsystem for use in operating the communication subsystem during a warm-up period of the current wake-up period;
• and
• after the warm-up period of the current wake up period, provide a current state value from the state controller to the communication subsystem for use in operating the communication subsystem during the wake up period, the current state value being determined based on a detected signal level of a current signal received in the communication subsystem.

A communication device, comprising:

• a processor;
• memory coupled to the processor;
• a communication subsystem coupled to the processor;
• a level detector configured to detect a signal level of a signal received in the communication subsystem;
• a state controller configured to provide one of a plurality of state values in response to the detected signal level from the level detector;
• the processor being configured to:
• read and store in memory a state value which was utilized for operating the communication subsystem during a wake-up period of the communication subsystem;
• cause the communication subsystem to enter into a sleep mode;
• cause the communication subsystem to exit from the sleep mode and enter into a current wake-up period;
• provide the stored state value to the communication subsystem for use in operating the communication subsystem during a warm-up period of the current wake-up period;
• and
• after the warm-up period of the current wake up period, provide a current state value from the state controller to the communication subsystem for use in operating the communication subsystem during the wake up period, the current state value being determined based on a detected signal level of a current signal received in the communication subsystem.