Adaptive low-power consumption method, device, and medium access control (MAC) layer for wireless sensor networks

A low-power adaptive device for a MAC layer of a wireless sensor network, comprising a processor configured to:

• determine an environmental traffic based on a number of data packets sent and received by nodes within a specified time;
• obtain a remaining battery energy percentage;
• determine an average node frequency based on a power of the nodes;
• set a maximum duty cycle frequency RDCmax and a minimum duty cycle frequency RDCmin;
• adjust a current duty cycle frequency based on the environmental traffic when the remaining battery energy percentage is above 50%;
• when the remaining battery energy percentage is approximately greater than or equal to 20% and less than or equal to 50%, reduce the maximum duty cycle frequency RDCmax to decrease a maximum change in duty cycle frequency;
• simultaneously, adjust the current duty cycle frequency based on the environmental traffic;
• when the remaining battery energy percentage is below 20%, determine the current duty cycle frequency based on a power of a current node and the average node frequency;
• wherein when the remaining battery energy percentage is above 50%, the processor is further configured to:
• if the current duty cycle frequency (RDC) is greater than the maximum duty cycle frequency (RDCmax), set RDC=RDCmax;
• if the environmental traffic is greater than or equal to 15 and RDCmin≤RDC*2≤RDCmax, set RDC=RDC*2;
• if the environmental traffic is greater than or equal to 0 but less than or equal to 5, and RDCmin≤RDC/2≤RDCmax, set RDC=RDC/2.

A low-power adaptive method for a MAC layer of a wireless sensor network, comprising:

• determining an environmental traffic based on a number of data packets sent and received by nodes within a specified time;
• obtaining a remaining battery energy percentage;
• establishing an average node frequency based on a power of the nodes;
• setting a maximum duty cycle frequency RDCmax and a minimum duty cycle frequency RDCmin;
• when the remaining battery energy percentage is above 50%, adjusting a current duty cycle frequency based on the environmental traffic;
• when the remaining battery energy percentage is approximately 20% to 50%, reducing the maximum duty cycle frequency RDCmax to decrease a maximum change in duty cycle frequency, while simultaneously adjusting the current duty cycle frequency based on the environmental traffic, comprising:
• adjusting the maximum duty cycle frequency RDCmax to half of an initially set maximum duty cycle frequency;
• if the current duty cycle frequency RDC is greater than the maximum duty cycle frequency RDCmax, setting RDC=RDCmax;
• if the environmental traffic is greater than or equal to 15 and RDCmin<=RDC*2<=RDCmax, setting RDC=RDC*2;
• if the environmental traffic is greater than or equal to 0 but less than or equal to 5, and RDCmin<=RDC/2<=RDCmax, setting RDC=RDC/2;
• when the remaining battery energy percentage is below 20%, determining the current duty cycle frequency based on a power of a current node and the average node frequency.