Uplink Transmission Windows for 5G Base Station Power Saving
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Solution Overview
Problem
The increased power consumption of base stations in 5G networks due to higher antenna density and bandwidth usage necessitates more efficient energy-saving methods, particularly in scenarios where immediate data transmission is required, such as in ultra-reliable low-latency communications (URLLC), without compromising data transmission rates.
Innovation Solution
A method and apparatus for configuring a transmission window (Tx window) to manage uplink and downlink channels, allowing base stations to transition between active and sleep modes efficiently, using wake-up signals from user equipment (UE) to minimize unnecessary transmission and reception, and dynamically adjusting ON/OFF durations for signals and channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations operate continuously to maintain high data transmission rates, then data transmission efficiency is improved, but power consumption increases
Solution Approach 1:
The base station operates in periodic cycles, alternating between active state (for data transmission) and sleep state (for power saving). The UL transmission window is configured periodically, allowing the base station to wake up only when needed to receive uplink data from user equipment, thereby reducing overall power consumption while maintaining data transmission efficiency.
Solution Approach 2:
The base station configures the UL transmission window in advance before entering sleep mode. This preliminary configuration allows user equipment to know when the base station will be active, enabling efficient power management without compromising data transmission timing requirements.
2Use of energy by moving object
If base stations enter sleep mode to save energy, then power consumption is reduced, but responsiveness to data transmission requests deteriorates
Solution Approach 1:
The base station pre-configures the UL transmission window timing and duration before entering sleep mode. This allows user equipment to submit uplink data during the predetermined window, ensuring that the base station wakes up exactly when needed to receive data, minimizing response time while maximizing power savings.
Solution Approach 2:
The base station dynamically adjusts its operational state based on the configured UL transmission window. It transitions from sleep to active state precisely when the window is scheduled, providing responsive data reception only during necessary periods while maintaining low power consumption during idle periods.
3Productivity
If base stations increase antenna density to improve communication capacity, then data transmission rate is improved, but power consumption increases
Solution Approach 1:
The base station uses high-density antennas during periodic active intervals to provide high communication capacity when needed, then transitions to sleep mode during intervals without configured UL transmission windows. This periodic operation allows the base station to leverage antenna density for improved capacity only during necessary periods, reducing overall power consumption.
Data Source
AI summary
The present disclosure discloses a method by which a terminal transmits an uplink (UL) signal in a wireless communication system. In particular, the method comprises: receiving first information related to a UL transmission window; transmitting second information indicating whether UL data exists within the UL transmission window; and transmitting the UL signal on the basis of the second information indicating that the UL data exists, wherein on the basis of the second information indicating that the UL data does not exist, the UL signal is not transmitted outside the UL transmission window or during a period of a prohibit timer, and the second information is a scheduling request (SR) or a buffer state report (BSR).