Patent ID: 11114899

Abstract:
In wireless system, radio frequency (RF) energy harvesting addresses the problem of limited battery lifetime in wireless nodes. In this invention, a wireless system for improving performance and prolonging battery life time of node, a battery assisted relay (2) framework is introduced. In this battery assisted relay framework, the energy harvested (EH) relay (2) augments the harvested energy with energy drawn from the battery (10) so as to prolong the battery life. Thus the following optimizations become relevant (i) maximizing throughput performance by using fixed small amount of battery energy in every signaling interval, (ii) minimizing battery energy consumption with predefined throughput performance requirement by optimizing a fixed charging time and energy together (best statistically optimum fixed charging time and energy drawn are determined), (iii) minimizing battery energy consumption by allowing channel-dependent energy harvesting duration, and (iv) minimizing battery energy consumption by drawing energy from the battery dependent on channel values. The suggested method and system can increase throughput as well as battery lifetimes, and are thus of practical value.