Wireless Node TCI State Updates for Non-Unicast CORESETs
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting configuration and update of parameters for multicast groupcast and/or broadcast services, particularly in scenarios like UE-specific downlink resources, leading to suboptimal resource utilization and transmission efficiency.
Innovation Solution
A method and device that utilize UE-specific downlink resources to configure and update Transmission Configuration Indicator (TCI) states for multicast and broadcast services, ensuring reliable transmission by distinguishing between unicast and non-unicast channels, thereby improving resource utilization and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE-specific downlink resources are used to transmit multicast groupcast and/or broadcast services, then resource utilization and transmission efficiency are improved, but the complexity of configuration and parameter update increases
Solution Approach 1:
The patent segments the configuration process by introducing a separate first CORESET for multicast groupcast/broadcast services, distinct from the second CORESET used for unicast services. This segmentation allows independent configuration and management of TCI states for different service types, reducing the complexity of updating parameters while maintaining efficient resource utilization for multicast services.
2Productivity
If TCI states are updated for multiple serving cells simultaneously, then resource utilization is improved, but the signaling complexity increases
Solution Approach 1:
The patent merges the TCI state configuration for multiple serving cells into a unified first CORESET structure. By combining the configuration of TCI states across multiple serving cells into a single coordinated framework, the system achieves simultaneous updates across all cells without proportionally increasing signaling complexity, as the first CORESET serves as a common reference for all cells.
3Device complexity
If a unified solution is applied to various scenarios (downlink, uplink, sidelink), then device complexity and costs are reduced, but the precision of scenario-specific optimization may be compromised
Solution Approach 1:
The patent implements universality by designing a first CORESET structure that can serve multiple scenarios including downlink, uplink, and sidelink communications. This unified structure enables the same TCI state configuration mechanism to be applied across different communication directions and types, reducing overall system complexity and hardware requirements while maintaining sufficient optimization for each specific scenario through configurable parameters.
Data Source
AI summary
A first node receives a first signaling. The first signaling comprises a first index and a second index, a first serving cell is identified by the first index, and a first Control Resource Set (CORESET) in the first serving cell is identified by the second index; a first TCI state set is configured to the first serving cell, and the first signaling is used to activate a first TCI state out of the first TCI state set; the first CORESET is associated with the first TCI state; the first signaling is applied to each serving cell in a target cell set; when the first CORESET satisfies a first condition, the target cell is a first cell set; when the first CORESET does not satisfy the first condition, the target cell set is a second cell set; the first condition comprises: being related to a non-unicast channel.