Component Carrier Power Saving With Wake-Up Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing network energy consumption is high, and there is a need for energy-saving techniques that do not increase power consumption, latency, or degrade performance for user equipment (UEs).
Innovation Solution
Implementing a network power saving mode (PSM) at base stations by deactivating continuous data exchange processing on certain component carriers and using wake-up signals (WUS) to transition to active mode when needed, along with configuring UEs to transmit wake-up signals to trigger data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous data exchange processing is activated at the base station, then data exchange efficiency is improved, but network energy consumption increases
Solution Approach 1:
The base station alternates between active mode and power saving mode in a periodic manner. During power saving mode, the base station deactivates continuous data exchange processing functionality to reduce energy consumption. When a wake-up signal is detected, the base station transitions to active mode to restore data exchange efficiency. This periodic switching resolves the contradiction by maintaining efficiency during active periods while reducing consumption during inactive periods.
Solution Approach 2:
The base station dynamically adjusts its operational state based on traffic conditions and UE requests. The system transitions between different processing modes (active and power saving) according to real-time needs, allowing flexible optimization of both energy consumption and data exchange efficiency depending on the current network state.
2Use of energy by stationary object
If power saving mode is activated at the base station, then network energy consumption is reduced, but data exchange latency increases
Solution Approach 1:
The base station maintains wake-up signal monitoring functionality even during power saving mode, which is a preliminary action that prepares the system for quick transition to active mode. This allows the base station to detect UE wake-up requests in advance and transition to active state before data exchange is needed, minimizing latency while maintaining energy savings.
Solution Approach 2:
The wake-up signal acts as an intermediary mechanism that bridges the power saving mode and active mode. When a UE needs data exchange during power saving mode, it transmits a wake-up signal that mediates the transition to active mode, ensuring minimal disruption to data exchange timing while maintaining energy efficiency during inactive periods.
3Use of energy by stationary object
If power saving mode is implemented at the network side, then network energy consumption is reduced, but UE performance may be degraded
Solution Approach 1:
The system implements feedback mechanisms where UEs can signal their wake-up needs to the base station during power saving mode. The base station monitors for wake-up signals from UEs and adjusts its state accordingly, ensuring that UE performance requirements are met while maintaining network energy savings. This feedback loop allows dynamic adaptation to UE needs without compromising reliability.
Data Source
AI summary
A base station operates at least a first cell that deploys a first component carrier (CC) and a second cell that deploys a second CC. The base station is configured to activate a power saving mode of operation at the second cell of the base station, wherein the power saving mode of operation includes deactivating a continuous data exchange processing functionality for the second CC of the second cell and receive, when the power saving mode of operation is activated, a wake up signal (WUS) from a user equipment (UE) configured to trigger the base station to utilize an active mode of data exchange processing to communicate with the UE on the second CC of the second cell.