Communication system, communication terminal, and communication method

A communication terminal which transmits/receives a frame to/from a management terminal which is connected to a first network, through a second network, comprising:

• a frame reception section which, in case of transmitting/receiving a frame between the management terminal and the communication terminal, receives the frame;
• a frame content readout section which reads out a content stored in the frame which was received by the frame reception section;
• a power off time setup section which sets up power off time for turning off power of the communication terminal, on the basis of a content of the frame which was read out by the frame content readout section;
• and
• a power off section which turns off power of the communication terminal, during a period of the power off time which was set up by the power off time setup section.

A communication method in which a management terminal connected to a first network is transmitting/receiving a frame to/from a plurality of communication terminals through a second network,

• wherein the communication terminal comprises:
• receiving, in case of transmitting/receiving a frame between the management terminal and the communication terminal, the frame;
• reading out a content which was stored in the received frame;
• setting up power off time for turning off power of the communication terminal, on the basis of a content of the frame which was read out;
• and
• turning off power of the communication terminal, during a period of the power off time which was set up.

A communication system comprising a communication terminal and a management terminal which manages the communication terminal,

• wherein the management terminal comprises a communication unit which transmits a reference frame including frame stored information which shows that there exists a frame addressed to the communication terminal, to the communication terminal, and
• wherein the communication terminal comprises:
• a communication unit which receives the reference frame;
• and
• a power control unit which turns off power, in case that the frame stored information is not included in the reference frame received by the communication unit of the communication terminal, after it turns on power in tune with timing of receiving the reference frame from the management terminal.

A communication system comprising a plurality of communication terminals and a management terminal which manages the communication terminals,

• wherein the management terminal comprises:
• a processing order determination unit which determines a processing order from a reference frame;
• and
• a communication unit which carries out communication with each communication terminal in accordance with the processing order which was determined by the processing order determination unit, and
• wherein the communication terminal comprises:
• a communication unit which receives the reference frame;
• and
• a power control unit which turns off power, after transmission/reception of a frame to/from the management terminal is completed, after it turns on power in tune with timing of receiving the reference frame from the management terminal.