Multi-Cell TCI State Activation for Multicast CORESET Signaling
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Solution Overview
Problem
Existing methods for wireless communication in cellular networks struggle to efficiently support configuration and update of parameters for multicast and broadcast services, particularly in scenarios involving UE-specific downlink resources, leading to suboptimal resource utilization and transmission efficiency.
Innovation Solution
A method for wireless communication in cellular networks to efficiently support configuration and update of parameters for multicast and broadcast services, particularly in scenarios involving UE-specific downlink resources, leading to suboptimal resource utilization and transmission efficiency, leading to a unified solution for various scenarios including downlink, uplink, and sidelink, by using UE-specific downlink resources to configure and update Transmission Configuration Indicator (TCI) states across multiple serving cells simultaneously, ensuring reliable transmission for both unicast and non-unicast channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE-specific downlink resources are used to transmit multicast and broadcast service parameters, then resource utilization and transmission efficiency are improved, but the complexity of configuring and updating parameters across multiple cells increases
Solution Approach 1:
The patent combines the configuration and update of TCI states across multiple serving cells into a single UE-specific downlink resource allocation. Instead of separately configuring each cell, the method merges all cell configurations into one unified signaling mechanism, thereby improving transmission efficiency while managing complexity through consolidation.
Solution Approach 2:
The UE-specific downlink resources are designed to serve multiple functions: they can be used for unicast communication and simultaneously for configuring multicast and broadcast services across multiple cells. This multi-functionality allows a single resource allocation to handle diverse communication scenarios, improving overall system efficiency.
2Device complexity
If a unified solution is applied to downlink, uplink and sidelink scenarios, then hardcore complexity and costs are reduced, but the specificity and adaptability to different transmission scenarios may be compromised
Solution Approach 1:
The patent implements a unified solution where the same UE-specific downlink resource allocation mechanism is applied across different transmission scenarios (downlink, uplink, and sidelink). This universal approach allows a single configuration framework to handle multiple communication directions and types, reducing system complexity and costs while maintaining adaptability through scenario-specific parameter configurations.
3Reliability
If multiple TCI states are configured for different serving cells, then transmission reliability is improved, but the signaling overhead and processing requirements increase
Solution Approach 1:
The patent merges the configuration of multiple TCI states across different serving cells into a single UE-specific downlink resource allocation signaling. Instead of sending separate configuration signals for each cell's TCI state, the method combines all necessary configuration information into one unified signal, thereby maintaining transmission reliability through comprehensive configuration while reducing signaling overhead.
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.