Terminal Downlink Control Channel Detection Power Reduction
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Solution Overview
Problem
In current LTE systems, terminals experience additional power consumption due to the need to detect and receive downlink control channels at all subframes during DRX ON states, even when not scheduled, leading to increased energy consumption.
Innovation Solution
The base station provides explicit signaling to terminals indicating whether to detect the downlink control channel within specific Transmission Time Intervals (TTIs), allowing terminals to determine if detection is necessary, thereby reducing unnecessary power consumption by avoiding detection in unscheduled subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal detects and receives downlink control channel at all subframes in DRX ON states, then the terminal can ensure reliable reception of scheduled data, but the terminal experiences additional power consumption
Solution Approach 1:
The base station performs preliminary action by sending indicator information before the terminal performs blind decoding. This indicator informs the terminal whether downlink data is scheduled in upcoming subframes, allowing the terminal to advance its decision on whether to activate reception circuits and perform blind decoding, thereby avoiding unnecessary power consumption while ensuring reliable data reception when scheduled
Solution Approach 2:
The terminal uses the received indicator information to autonomously determine its own power consumption behavior. Based on the indicator, the terminal self-adjusts whether to perform blind decoding operations, making the power management decision itself without continuous network control, thus reducing unnecessary processing while maintaining reliable reception when needed
Data Source
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AI summary
Disclosed in the present invention are a method, equipment and an apparatus for indicator and downlink control channel detection, comprising: determining data which must be transmitted to a terminal in one or more transmission time intervals by means of a downlink control channel; a base station sending a command to the terminal, used to indicate that the terminal determine according to the command whether it is necessary to detect a downlink control channel in the one or more transmission time intervals. On the terminal, determining according to the command whether it is necessary to detect a downlink control channel in the one or more transmission time intervals. After using the present invention, when a base station has not scheduled a terminal, this objectively causes a terminal side to not have excess power consumption, and lowers terminal-side power consumption.