Base Station DTX/DRX Energy Saving Without Service Loss
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing network energy consumption at base stations, leading to increased operational costs and potential performance degradation.
Innovation Solution
Implementing a base station energy saving mode based on cell discontinuous transmission (DTX) and/or cell discontinuous reception (DRX), with terminals capable of deactivating this mode via RRC signaling when necessary, and using reference signal received power (RSRP) to determine the need for energy saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If base station operates in energy saving mode (cell DTX/DRX), then power consumption is reduced, but communication reliability and service availability deteriorate
Solution Approach 1:
The base station dynamically switches between normal operation mode and energy saving mode based on real-time service conditions. When service requirements are low, the base station enters energy saving mode with reduced power consumption. When service requirements increase (detected through terminal requests or uplink signals), the base station exits energy saving mode and returns to normal operation, ensuring reliability when needed.
Solution Approach 2:
The system changes operational parameters of the base station by deactivating certain cells or reducing transmission power during energy saving mode. The base station can adjust its operating parameters based on traffic conditions, switching between different power states to balance energy consumption and service quality.
2Use of energy by stationary object
If base station operates in energy saving mode, then operational cost is reduced, but service availability and user experience deteriorate
Solution Approach 1:
The base station implements periodic monitoring of service conditions and transitions between normal mode and energy saving mode. The system uses discontinuous transmission (DTX) and discontinuous reception (DRX) mechanisms, where the base station periodically checks for service requirements and adjusts its operational state accordingly, achieving energy savings during low-activity periods while maintaining availability when needed.
Solution Approach 2:
The system incorporates feedback mechanisms where terminals can send requests to activate the base station from energy saving mode, and the base station monitors uplink signals to detect service requirements. This feedback loop ensures that the base station responds to actual service needs, balancing energy consumption with service availability based on real-time conditions.
3Reliability
If terminal continuously monitors base station status, then service quality is maintained, but terminal energy consumption increases
Solution Approach 1:
The terminal implements discontinuous reception (DRX) to periodically monitor base station status instead of continuous monitoring. The terminal can wake up at specific intervals to check for service requirements or base station activation status, then return to sleep mode. This periodic monitoring approach maintains service quality awareness while significantly reducing terminal power consumption during idle periods.
Data Source
AI summary
Provided are a method and apparatus for network energy saving in a wireless communication system. A terminal or communication device identifies a base station. Then, the terminal or communication device determines whether the identified base station operates in a base station energy saving mode. Thereafter, the terminal or communication device transmits a deactivation request of the base station energy saving mode to the base station and transmits and receives data with the base station while the base station energy saving mode has been deactivated. Here, the base station energy saving mode is based on cell discontinuous transmission (DTX) and/or cell discontinuous reception (DRX). If the base station energy saving mode is based on another energy saving scheme such as power/space/frequency-domain techniques, a different neighboring base station is identified.