An Adaptive Energy Saving Algorithm for an RSSI-Based Localization System in Mobile Radio Sensors

Abstract

In localization systems based on the emission of reference radio signals, an important issue related to the reliability of sensor operation is the problem of operating time and power of the emitted reference radio signal. There are many localization methods that have proven useful in practice and that use a reference radio signal for this purpose. In the issue of determining the location of radio emitters, various radio signal propagation models are used to determine the effective range and distance of the sensor-receiver from the radio emitter. This paper presents an adaptive power control algorithm for a transmitter, as a reference emitter, operating in power-saving mode. An important advantage of the presented solution is the adjustment of the localization system accuracy at the assumed level of energy radiated by radio emitters based on the RSSI signal received power estimation.

Keywords

• automatic transmitter power control (ATPC)
• short range devices (SRD)
• received signal strength indicator (RSSI)
• wireless radio sensors
• indoor localization