Telefonaktiebolaget Lm Ericsson (publ)

Masao Naruse

Marko Pessa

Joni Tuomas Jäntti

Bengt Edholm

Cecilia Andersson

Mikko Pulkkinen

Harri Nissi

Bhavinkumar Patel

Joni JÄNTTI

A power control system provides multiple supply voltages that are guaranteed not to violate boundary conditions regardless of the timing of voltage change commands. A first voltage (Vin the embodiments described herein) is controlled conventionally, and a second voltage (V) is either selected or generated by adding a selected offset to the first voltage. Both the size of the offset, and the absolute value of the second voltage, are constrained at all times, by constraint values specific to the current voltage zone. The invention ensures a smooth transition between different voltage operating points, and ensures that the trajectory of change between specified operating points remains within predefined boundaries.

System and method for control of multiple voltage regulators

A power control system provides multiple supply voltages that are guaranteed not to violate boundary conditions regardless of the timing of voltage change commands. A first voltage (Vin the embodiments described herein) is controlled conventionally, and a second voltage (V) is either selected, or generated by adding a selected offset to the first voltage. Both the size of the offset, and the absolute value of the second voltage, are constrained at all times, by constraint values specific to the current voltage zone. The invention ensures a smooth transition between different voltage operating points, and ensures that the trajectory of change between specified operating points remains within predefined boundaries.

A power management method of a wireless communication device is disclosed. The wireless communication device comprises a modem for wireless communication and a battery for supplying power to the modem. The method comprises obtaining information regarding a power consumption of the modem as a function of time (the information being provided by the modem during wireless communication), forming power consumption statistics from the obtained information (wherein the power consumption statistics comprise an average power consumption during wireless communication as a function of one or more time parameters), and controlling use of the modem by one or more applications of the wireless communication device based on the power consumption statistics. Corresponding computer program product, arrangement and wireless communication device are also disclosed.

Power management of a wireless communication device

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Tokyo, Japan

Masao Naruse