Base Station Detection Indication for Terminal Energy Reduction
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Solution Overview
Problem
In LTE systems, terminals consume excessive energy detecting control signaling across all transmission units, even when not all units carry control information, and must periodically monitor PDCCH to switch between active and sleep states, leading to inefficient energy use.
Innovation Solution
Configuring and sending detection indicating information by the base station to terminals specifying which units require control signaling detection within a time window, allowing terminals to determine when to perform detection and reducing unnecessary energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal detects control signaling for each transmission unit, then the terminal can receive control information in time, but the energy consumption of the terminal increases
Solution Approach 1:
The patent segments the control signaling detection process by introducing a time window mechanism. Instead of continuously detecting control signaling on every transmission unit, the terminal is configured with specific time windows during which detection should occur. This segmentation allows the terminal to focus detection efforts only on relevant time periods, reducing energy consumption while maintaining reliable control information reception.
2Use of energy by moving object
If the terminal enters sleep state to reduce energy consumption, then energy usage decreases, but the terminal must periodically monitor PDCCH to switch states, consuming additional energy
Solution Approach 1:
The patent applies preliminary action by pre-configuring time windows for control signaling detection before the terminal enters sleep state. The base station provides detection indicating information in advance, specifying when the terminal should wake up to detect control signaling. This allows the terminal to optimize its sleep-wake cycle based on predetermined detection opportunities, reducing both energy consumption and unnecessary state switching.
3Reliability
If the terminal detects control signaling on all transmission units, then no control information is missed, but unnecessary detection on units without control information wastes energy
Solution Approach 1:
The patent extracts the essential detection opportunities from the continuous transmission unit stream by identifying and isolating specific time windows where control signaling is actually present. The detection indicating information carried by the base station specifies these extracted time windows, allowing the terminal to exclude unnecessary detection on transmission units that do not carry control information, thereby eliminating wasted energy while maintaining complete control information reception.
Data Source
AI summary
An indicating method includes: configuring detection indicating information for indicating a terminal that needs to detect the control signaling within a time window; and sending a message carrying the detection indicating information to the terminal.