Patent ID: 9107169
Filing Date: 2015-08-11
Classification: H04W

Abstract:
1. A user equipment (UE) of a wireless communication system, the UE comprising: a second receiving module, of a second wireless communication chip, configured for receiving communication mode information from a first communication module of a first wireless communication chip indicating whether the first wireless communication chip is in a random access channel (RACH) mode for performing a RACH process for an access to a base station; and a power value measuring module configured to measure a transmission power value of a first signal transmitted via the first wireless communication chip only when the first signal and a second signal are to be simultaneously transmitted respectively via the first wireless communication chip and the second wireless communication chip; a power value determining module of the second wireless communication chip, configured for determining a transmission power value of the second signal based on whether the first wireless communication chip is in the RACH mode, wherein if the first wireless communication chip is in a normal mode, the transmission power value of the second signal is determined by subtracting a power back-off value from a maximum transmission power value of the second signal wherein the power back-off value is determined according to the transmission power value of the first signal, wherein if the first wireless communication chip is in the RACH mode, the transmission power value of the first signal is gradually increased when the first signal is transmitted unsuccessfully and the transmission power value of the second signal is determined by subtracting a maximum value of the power back-off value from the maximum transmission power value of the second signal, and wherein the first wireless communication chip is configured for transmitting the first signal using a first wireless communication scheme, and the second wireless communication chip is configured for transmitting the second signal using a second wireless communication scheme.