Terminal Search Space Set Activation for Flexible Low-Power Monitoring
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Solution Overview
Problem
Conventional configurations in radio communication systems lack flexibility in switching search space sets, leading to unnecessary monitoring and increased power consumption.
Innovation Solution
A terminal that receives indications from a base station to activate or deactivate individual search space sets within a group, allowing for flexible monitoring control and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If search space set group switching is configured at the group level only, then device complexity is reduced, but monitoring flexibility deteriorates and power consumption increases
Solution Approach 1:
The patent segments the search space set group into individual search space sets, allowing independent activation/deactivation of each set. This segmentation enables fine-grained control where the terminal can selectively monitor only necessary search space sets, achieving both reduced power consumption and maintained flexibility without excessive complexity.
Solution Approach 2:
The patent introduces dynamic activation and deactivation mechanisms for search space sets within a group. The network can dynamically indicate which search space sets should be active or inactive, allowing the system to adapt to varying traffic conditions and prioritize different search space sets based on current needs, thereby improving monitoring flexibility.
2Reliability
If all search space sets in a group are monitored, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by differentiating the monitoring status of individual search space sets within a group. Instead of uniformly monitoring all sets, the network can specify which particular sets should be active based on local conditions (e.g., traffic type, QoS requirements), allowing the terminal to concentrate power consumption only on critical monitoring tasks while maintaining reliability for essential communications.
Solution Approach 2:
The patent changes the monitoring parameter from a binary all-or-nothing approach to a selective activation approach. By introducing activation/deactivation parameters for each search space set, the system can adjust monitoring behavior dynamically, turning off non-essential sets to save power while keeping essential sets active to maintain reliability.
3Device complexity
If search space set switching occasions are limited, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The patent implements periodic action by establishing specific switching occasions at defined intervals (e.g., every slot, every frame). This periodic structure provides a simple, predictable pattern that reduces control complexity while still allowing the system to adapt to changing conditions at regular intervals, balancing flexibility with manageable complexity.
Data Source
AI summary
A terminal includes: a receiving unit configured to receive an indication indicating an active state or an inactive state from a base station for each of one or more search space sets included in a search space set group; and a control unit configured to monitor a search space set for which the indication is an active state, and does not monitor a search space set for which the indication is an inactive state, among the search space sets included in the search space set group.