Systems and methods for reducing power consumption of a communications device using multiple elements in a receiver chain

摘要

Systems and methods according to embodiments of the present invention are provided for increasing the power efficiency of a communications device by allowing it to support dual-SIM functionality while issuing simultaneous wake ups for each SIM. Embodiments of the present invention leverage time sharing solutions to minimize the amount of circuitry needed in a communications device to issue wake ups while avoiding the drawbacks of other time sharing solutions that result in increased overhead due to requiring multiple transitions from an idle state to an active state.

主权项

1. A communications device comprising:
a first receiver coupled to a first phase lock loop (PLL) and a first subscriber identity module (SIM); a second receiver coupled to the first PLL, a second PLL, and a second SIM; a transmitter coupled to the second PLL; and a controller coupled to the first PLL and the second PLL, wherein the controller is configured to:
initiate, using the first PLL, a first wake up signal for the first receiver if a first transmission is in progress using the second SIM, and initiate, using the second PLL, a second wake up signal for the second receiver if a second transmission is in progress using the first SIM.