Dynamic PDCCH Skipping for Terminal Power Management
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Solution Overview
Problem
Existing discontinuous reception (DRX) mechanisms in communication systems lack flexibility in power saving configurations, leading to inefficient battery life and potential data transmission reliability issues due to semi-static settings that do not adjust according to actual data arrival rates.
Innovation Solution
A method where a terminal device receives a physical downlink control channel (PDCCH) with indication information for skipping operations, allowing dynamic power saving by suspending PDCCH detection only after successful data channel transmission, thereby improving data transmission reliability and flexibility in power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If semi-static DRX configuration is used to reduce power consumption, then battery life is improved, but flexibility in adapting to actual data arrival rates deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from semi-static DRX configuration to dynamic PDCCH skipping. The terminal device dynamically determines whether to skip PDCCH detection based on whether data transmission is ongoing, allowing the system to adapt power consumption levels in real-time according to actual data arrival rates while maintaining flexibility.
Solution Approach 2:
The patent changes the parameter of PDCCH detection behavior from fixed (semi-static DRX) to variable (dynamic skipping). By introducing indication information that dynamically controls the skipping operation, the system can adjust power consumption parameters based on real-time transmission status, resolving the contradiction between power saving and adaptability.
2Use of energy by moving object
If PDCCH detection is stopped to save power, then battery life is improved, but data transmission reliability deteriorates
Solution Approach 1:
The patent implements feedback by using indication information sent by the network device to the terminal device. This feedback mechanism allows the terminal to dynamically adjust PDCCH detection based on actual transmission status, ensuring reliability is maintained when needed while enabling power saving when appropriate, thus resolving the contradiction between power consumption and reliability.
Solution Approach 2:
The system dynamically switches between PDCCH detection and skipping modes based on transmission status. When data transmission is ongoing, the terminal continues detecting PDCCH to ensure reliability; when transmission is complete, the terminal skips detection to save power, thereby resolving the contradiction between power consumption and data transmission reliability.
3Device complexity
If semi-static DRX configuration is used, then power saving mechanism is simple, but flexibility in adjusting to actual data arrival rates deteriorates
Solution Approach 1:
The patent makes the PDCCH multi-functional by embedding both data scheduling information and power saving indication information within the same channel. This universal approach allows the system to achieve flexible power management without adding separate complex configuration mechanisms, thereby improving flexibility while maintaining simplicity.
Solution Approach 2:
The terminal device autonomously determines whether to skip PDCCH detection based on indication information received from the network, without requiring complex external configuration. This self-service mechanism enables flexible adaptation to data arrival rates while keeping the overall system configuration simple, resolving the contradiction between complexity and flexibility.
Data Source
AI summary
Embodiments of the present application disclose a method for detecting a control channel and a terminal device. The method includes: a terminal device receives a first physical downlink control channel PDCCH, where the first PDCCH is used to schedule a first data channel, and the first PDCCH carries first indication information which is used to indicate execution of a skipping operation for a PDCCH by the terminal device; and the terminal device executes the skipping operation in case of successful transmission of the first data channel. The method and the terminal device in the embodiments of the present application can more dynamically support power saving of the terminal device.