Energy-Saving BWP Adaptation

Technical Explanation

Transmitting across an ultra-wide 100 MHz bandwidth burns significant digital filtering and power amplifier energy. In Rel-18, base stations utilize energy-saving BWP adaptation to narrow active transmission bandwidth to 20 MHz or 40 MHz during lull periods, steering all connected UEs into the narrow bandwidth part and lowering transceiver power.

Key Functions

• Shrinks active cell operating bandwidth from 100 MHz to 20 MHz during quiet periods
• Reduces digital front-end clocking frequencies and transceiver power dissipation
• Concentrates active user resource allocations into an energy-efficient spectral slice
• Expands bandwidth back to full capacity instantly when high-throughput requests arrive