Wireless terminal

A wireless terminal for assigning more communication opportunities to a lower-congestion time slot to perform data communication in an autonomously distributed manner, the wireless terminal comprising:

• a communication timing determination module for determining a communication timing based on a communication log;
• and
• a connection control module for performing communication at the determined communication timing and for recording a log of the communication, wherein
• the communication timing determination module comprises:
• a permitted slot setting section for dividing one preset cycle into a plurality of time slots and for setting some of the time slots, respectively, as communication permitted slots;
• a communication assigning section for assigning a communication opportunity to each communication permitted slot based on the number of communication opportunities per one cycle;
• a communication timing determining section for determining the timing of the assigned communication opportunity in each communication permitted slot;
• a connectivity estimating section for estimating the connectivity of each communication permitted slot based on the communication log;
• and
• a communication readjusting section for readjusting the communication during each communication permitted slot so that more communication opportunities are assigned to a communication permitted slot with a higher connectivity, and wherein
• communications are performed during communication opportunities of the readjusted number of communication opportunities and repeated in each communication permitted slot.