In user equipment, a wireless interface circuit simultaneously communicates with two communication networks. A control circuit decides to use a first reserved power of one communication network where URLLC transmission is necessary, and a second reserved power of the other communication network in which the URLLC is not operated, for the URLLC transmission as to the one communication network. The wireless interface circuit transmits URLLC signals over the one communication network, using the first reserved power and the second reserved power.