Power Gating and Dynamic Voltage Scaling

Energy Conservation in Passive Optical Networks: A Tutorial and Survey

“…When it comes to Dynamic Voltage and Frequency Scaling (DVFS), the objective is to adjust the applied voltage and frequency in a microprocessor or a control chip in such a way that the energy consumption is reduced while meeting the performance requirement (e.g., delay requirement) [263], [264]. In case of power gating, the objective is to cutting off supplied power of a control chip when it does not have any use [263], [265]. To implement this, an additional hardware (a power gating switch) is required [265].…”

“…In case of power gating, the objective is to cutting off supplied power of a control chip when it does not have any use [263], [265]. To implement this, an additional hardware (a power gating switch) is required [265]. For energy saving in PONs, the ITU-T has recommended (e.g., ITU-T G Suppl.…”

“…Power Gating and voltage and frequency scaling [263], [265] Adjusting the applied voltage and frequency in a microprocessor or a control chip to energy consumption and meet performance requirement…”