Mobile communications system and mobile terminal

A mobile terminal comprising:

• a transition judging unit that judges whether or not said mobile terminal is able to make a transition to a temporary transmission stop period during which said mobile terminal temporarily stops transmission of data, the mobile terminal being capable of separately transitioning to a temporary reception stop period during which said mobile terminal temporarily stops reception of data, and when judging that the mobile terminal is able to make a transition to the temporary transmission stop period, the transition judging unit notifies the base station that said mobile terminal is able to make a transition to the temporary transmission stop period;
• a judgment result receiving unit that receives a judgment result from a base station, said judgment result showing whether or not said mobile terminal is able to make a transition to the temporary reception stop period;
• and
• an electric power supply stopping unit that, when the judgment result of said transition judging unit shows that said mobile terminal is able to make a transition to the temporary transmission stop period, and the judgment result received by said judgment result receiving unit shows that said mobile terminal is able to make a transition to the temporary reception stop period, temporarily stops supply of electric power to data transmission processing units and data reception processing units,
• wherein when the mobile terminal receives the result of the judgment from the base station that the mobile terminal is able to make a transition to the temporary reception stop period, the mobile terminal transitions to both the temporary data transmission stop period and the temporary reception stop period, and when the mobile terminal receives the result of the judgment from the base station that the mobile terminal is not able to make a transition to the temporary reception stop period the mobile terminal transitions to the temporary data transmission stop period but not the temporary reception stop period.

A mobile terminal comprising:

• a priority determining unit that determines whether to give a higher priority to low power consumption;
• and
• a parameter transmitting unit that transmits a parameter showing a result of the determination made by said priority determining unit to a base station and transmitting capability information showing a capability of the mobile terminal itself,
• wherein the parameter transmitting unit transmits the parameter showing the result of the determination made by the priority determining unit and the capability information to the base station when the capability of the mobile terminal itself is changed or in a predetermined cycle.