Wireless Terminal Search Space Set Switching for Power Efficiency
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Solution Overview
Problem
Current wireless communication systems lack a flexible solution for controlling the monitoring of Search Space Sets (SSSs) in terminal devices, which limits power efficiency and adaptability to varying user equipment (UE) capabilities.
Innovation Solution
The proposed solution involves an electronic device that performs SSS switching based on the monitoring capability of a terminal device. This is achieved by receiving capability information from the UE, associating SSSs with monitoring capability identifiers, and transmitting SSS configuration information and Downlink Control Information (DCI) to indicate which SSSs to monitor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform SSSG switching is applied to all UEs, then system simplicity is maintained, but adaptability to different UE capabilities deteriorates
Solution Approach 1:
The patent applies local quality by configuring different monitoring parameters for different SSSGs based on individual UE capabilities. Each UE is assigned specific monitoring parameters (monitoring parameter set) that match its capabilities, allowing tailored monitoring behavior rather than uniform treatment. This resolves the contradiction by enabling adaptability to different UE capabilities while maintaining manageable system complexity through standardized capability reporting and configuration procedures.
2Reliability
If frequent PDCCH monitoring is performed, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamics by enabling dynamic switching between different SSSGs with different monitoring densities based on channel occupancy time status and UE capabilities. During COT, the system can switch to sparser monitoring (lower frequency) to reduce power consumption, while outside COT using denser monitoring for higher reliability. This dynamic adaptation resolves the contradiction between reliability and power consumption by adjusting monitoring frequency according to actual communication needs and capability constraints.
Solution Approach 2:
The patent applies parameter changes by modifying monitoring parameters (such as monitoring frequency, SSSG selection) based on channel occupancy time status and UE capabilities. The system changes monitoring parameters dynamically - using denser monitoring parameters outside COT for reliability and sparser monitoring parameters during COT for power saving. This resolves the contradiction by adjusting monitoring intensity according to contextual conditions and capability constraints.
3Reliability
If blind detection on multiple candidate PDCCHs is performed, then decoding reliability is improved, but processing time increases
Solution Approach 1:
The patent applies segmentation by dividing the search space into different SSSGs with different monitoring densities and candidate PDCCH sets. Instead of uniformly checking all candidates, the system segments the detection process into prioritized groups based on capability and conditions. This allows the terminal to focus processing time on high-priority candidates first, improving decoding reliability for critical communications while reducing overall processing time through selective blind detection on segmented candidate sets.
Data Source
AI summary
The present invention relates to an electronic device and a method for a wireless communication system, and a storage medium. An electronic device for a control device side of a wireless communication system, comprising: a processing circuitry configured to perform Search Space Set, SSS switching based on monitoring capability of a terminal device by: receiving, from the terminal device, capability information indicating one or more monitoring capabilities supported by the terminal device and monitoring capability identifiers, each associated with each monitoring capability; associating one or more SSSs associated with each of the one or more monitoring capabilities with a monitoring capability identifier associated with the monitoring capability; transmitting, to the terminal device SSS configuration information, wherein, the SSS configuration information at least indicates a monitoring capability identifier associated with each SSS; and transmitting, to the terminal device, Downlink Control Information, DCI comprising a first monitoring capability identifier, so as to indicate one or more SSSs to be monitored by the terminal device.