DCI-Based SCell Dormancy Signaling for Adaptive PDCCH Monitoring
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Solution Overview
Problem
Existing wireless communication technologies face challenges in effectively and reliably achieving power saving during the transmission of downlink control information, particularly in scenarios involving continuous monitoring of physical downlink control channels.
Innovation Solution
The introduction of a secondary cell (SCell) dormancy indication information field in downlink control information (DCI) to dynamically adjust the monitoring behavior of terminals, allowing for adaptive power saving by configuring and sending DCI with indication information to instruct terminals on when to monitor the PDCCH, thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals continuously monitor PDCCH to ensure reliable reception of downlink control information, then reliability of control information reception is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by enabling terminals to dynamically switch between different PDCCH monitoring states (active monitoring, partial monitoring, and suspended monitoring) based on received indication information. This allows the monitoring behavior to adapt to current transmission conditions rather than continuously monitoring at fixed configuration levels, thereby reducing power consumption while maintaining reliable reception when needed.
Solution Approach 2:
The patent changes the monitoring parameter (PDCCH monitoring behavior) based on received indication information. The terminal adjusts monitoring parameters such as monitoring duration, monitoring frequency, or monitoring state according to the indication, allowing flexible adaptation between reliability and power consumption requirements without fixed configuration constraints.
2Ease of operation
If terminals adopt fixed PDCCH monitoring configurations to simplify operation, then ease of operation is improved, but adaptability to different transmission scenarios deteriorates
Solution Approach 1:
The patent introduces indication information as an intermediary mechanism that carries monitoring state instructions from the network to the terminal. This intermediary enables flexible adaptation to different transmission scenarios without requiring complex terminal-side decision logic, maintaining ease of operation while achieving scenario adaptability through network-controlled indication messages.
Solution Approach 2:
The patent makes the PDCCH monitoring configuration dynamic by allowing terminals to switch between different monitoring states based on received indications. This dynamic adjustment enables the system to adapt to varying transmission scenarios (such as different traffic types, channel conditions, or service requirements) while keeping terminal operations simple through predefined state transitions.
Data Source
AI summary
An information transmission method includes: receiving the DCI sent by a base station, wherein the DCI carries a secondary cell (SCell) dormancy indication information field; obtaining indication information for the SCell dormancy indication information field; and obtaining, according to the indication information and the SCell dormancy indication information field, an actual indication represented by the SCell dormancy indication information field for monitoring a physical downlink control channel (PDCCH).