Terminal, communication system, and terminal synchronization method

A communication system comprising:

• a base station;
• and a plurality of terminals, wherein
• the terminal includes
• a sensor that acquires a sensing data signal;
• a power supply state determination information acquisition unit that acquires power supply state determination information for determining a power supply state of a local terminal;
• a power supply state determination information communication unit that performs communication for exchanging the power supply state determination information with another terminal;
• a representative terminal determination unit that determines a representative terminal on a basis of the power state determination information of the local terminal and the another terminal;
• a reference signal reception unit that receives a reference signal necessary for synchronization and generates time information in a case where the local terminal corresponds to the representative terminal;
• a time information communication unit that transmits the time information to the another terminal in the case where the local terminal corresponds to the representative terminal, and receives the time information from the representative terminal in a case where the local terminal does not correspond to the representative terminal;
• and
• a data signal transmission unit that transmits the sensing data signal to the base station after synchronization based on the time information is completed.

A terminal synchronization method comprising:

• by a power supply state determination information acquisition unit, acquiring power supply state determination information for determining a power supply state of a local terminal;
• by a power supply state determination information communication unit, performing communication for exchanging the power supply state determination information with another terminal;
• by a representative terminal determination unit, determining a representative terminal on a basis of the power state determination information of the local terminal and the another terminal;
• by a reference signal reception unit, receiving a reference signal necessary for synchronization and generating time information in a case where the local terminal corresponds to the representative terminal;
• and
• by a time information communication unit, transmitting the time information to the another terminal in the case where the local terminal corresponds to the representative terminal, and receiving the time information from the representative terminal in a case where the local terminal does not correspond to the representative terminal.