Apparatus, system, and method for parallelizing UE wakeup process

A user equipment device (UE), comprising:

• a crystal oscillator;
• radio frequency (RF) circuitry coupled to the crystal oscillator, wherein the RF circuitry comprises a microprocessor, a nonvolatile memory, and a volatile memory;
• and
• baseband circuitry coupled to the RF circuitry and the crystal oscillator, wherein the baseband circuitry comprises a microprocessor;
• wherein the UE is configured to:
• provide power to a crystal oscillator to exit a first sleep state;
• perform calibration and state restoration of the RF circuitry in response to providing power to the crystal oscillator, wherein performing calibration and state restoration of the RF circuitry is controlled by the microprocessor of the RF circuitry;
• perform state restoration of the baseband circuitry, wherein the state restoration is controlled by the microprocessor of the baseband circuitry, wherein performing the state restoration is after performing calibration of the RF circuitry;
• receive data from a wireless communication network using the RF circuitry;
• process the data using the baseband circuitry;
• perform state retention of the RF circuitry after receiving the data from the wireless communication network and wherein performing state retention of the RF circuitry is controlled by the microprocessor of the RF circuitry;
• perform state retention of the baseband circuitry after processing the data, wherein performing state retention of the baseband circuitry is controlled by the microprocessor of the baseband circuitry;
• and
• power down the crystal oscillator to enter a second sleep state, after performing state retention of the baseband circuitry.

Radio frequency (RF) circuitry configured for placement within a user equipment device (UE), wherein the RF circuitry comprises:

• a microprocessor;
• non-volatile memory coupled to the microprocessor, wherein the non-volatile memory is configured to store state information while in a sleep state;
• volatile memory coupled to the microprocessor, wherein the volatile memory is configured to store state information while in an active state;
• wherein the RF circuitry is configured to:
• receive a reference signal from a crystal oscillator of the UE, after exiting a first sleep state;
• perform calibration and state restoration of the RF circuitry in response to receiving the reference signal from the crystal oscillator, wherein performing calibration and state restoration of the RF circuitry is controlled by the microprocessor of the RF circuitry, wherein the state restoration comprises transferring state information from the non-volatile memory to the volatile memory;
• receive data from a wireless communication network;
• and
• perform state retention of the RF circuitry after receiving the data from the wireless communication network, wherein performing state retention of the RF circuitry is controlled by the microprocessor of the RF circuitry.