Body-posture-based dynamic link power control in wearable sensor networks

An Efficient Low-Power MAC Protocol for Wireless Body Sensor Networks

“…This algorithm reaches appropriate transmission power more swiftly than the linear TPC algorithm, but substantially changes TPL each time, and therefore an oscillation phenomenon occurs where whenever TPL changes, the RSSI value of the data packet does not belong to the target RSSI margin, and circles around it. The dynamic TPC algorithm derives a linear equation using two RSSIs, and predicts the appropriate TPL at one time through it [9]. Therefore, this algorithm may find the proper TPL most swiftly when the wireless channel is stable.…”

An Acceleration-based Packet Transmission Mechanism for Wireless Sensor Systems

“…Representative TPC algorithms include a linear algorithm [4], a binary algorithm [5], and a dynamic algorithm [6]. A linear algorithm [4] heightens or lowers the set TPL by a level when the RSSI fails to enter the target RSSI margin.…”

Different Characteristics of Radio Modules in Wireless Body Sensor Network Systems

“…Many previous studies focused on particular radio modules [2]- [4]. Natarajan [2] and Shah [3] explored link layer characteristics of CC2420 by collecting log data from many volunteers in different environments.…”

“…Natarajan [2] and Shah [3] explored link layer characteristics of CC2420 by collecting log data from many volunteers in different environments. Quwaider [4] proposed a dynamic TPC algorithm using CC1000 radio modules at 433 MHz. However, these studies concentrated on particular radio modules, so their experimental results cannot be applied to other radio modules.…”