Link-state-estimation-based transmission power control in wireless body area networks

Area of Science:

• Biomedical Engineering
• Wireless Communication Systems
• Network Protocols

Background:

• Wireless Body Area Networks (WBANs) are crucial for remote health monitoring.
• Sensor node lifetime and link reliability are critical challenges in WBANs.
• Existing power control protocols often struggle to balance energy efficiency and reliability.

Purpose of the Study:

• To propose a novel transmission power control protocol for WBANs.
• To enhance sensor node longevity and improve link reliability.
• To address the limitations of current power control mechanisms in WBANs.

Main Methods:

• Experimental investigation of link states using Received Signal Strength Indicator (RSSI).
• Development of a practical transmission power control protocol integrating short- and long-term link-state estimations.
• Adaptation of transceiver transmission power and targeting of RSSI threshold ranges for energy efficiency and reliability.

Main Results:

• The proposed protocol demonstrated an increase in sensor node lifetime by up to 9.86%.
• Link reliability was enhanced, with packet loss reduced by a maximum of 3.02%.
• Performance was validated in scenarios involving body posture changes and dynamic body motion.

Conclusions:

• The novel transmission power control protocol effectively extends WBAN sensor node lifetime.
• The protocol significantly improves link reliability in WBANs.
• This approach offers a practical solution for optimizing WBAN performance.