Method, apparatus and computer program for limiting the total transmit power of a wireless device

摘要

A wireless device has a plurality of radio systems. The current priority of each of the radio systems is determined. An upper bound for the transmit power of each of the radio systems is set in dependence on at least the current priorities of the radio systems and a current maximum permitted transmit power of the wireless device. The upper bounds for the transmit power of each of the radio systems are variable over time and are set such that the sum of the upper bounds does not exceed the current maximum permitted transmit power of the wireless device. For each of the radio systems, the transmit power of that radio system is limited such that the respective upper bound for the transmit power for that radio system is not exceeded.

主权项

1. A method of limiting a total transmit power of a wireless device having a plurality of radio systems that each provide service for a different SIM of the wireless device, the method comprising:
determining a current priority of each of the plurality of radio systems that provide service for the different SIMs; setting an upper bound for transmit power of each of the plurality of radio systems in dependence on at least the current priorities of the plurality of radio systems and a current maximum permitted transmit power of the wireless device, the upper bounds for the transmit power of each of the plurality of radio systems being variable over time and being set such that a sum of the upper bounds does not exceed the current maximum permitted transmit power of the wireless device, the total transmit power of the wireless device at any time being a sum of the transmit powers of the plurality of radio systems at that time; and, for each of the plurality of radio systems, limiting the transmit power of that radio system such that the respective upper bound for the transmit power for that radio system is not exceeded.