Sidelink Carrier Aggregation via Uu CC Subsets
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in managing sidelink carrier aggregation and blind searches for DCI 3_0s, leading to increased monitoring overhead and complexity for UEs, especially with multiple sidelink component carriers.
Innovation Solution
The proposed solution involves dynamically adapting blind searches by determining a subset of Uu component carriers (CCs) to perform blind searches on and dynamically associating sidelink CCs with non-dormant Uu CCs, reducing the need for extensive monitoring and optimizing sidelink communication configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs perform blind searches for DCI 3_0s on all Uu component carriers, then complete sidelink transmission scheduling coverage is achieved, but monitoring overhead and complexity increase significantly
Solution Approach 1:
The patent divides the set of all Uu component carriers into multiple subsets, where each subset is associated with specific sidelink component carriers. UEs only perform blind searches for DCI 3_0s on the Uu CCs within their assigned subset, rather than monitoring all Uu CCs. This segmentation reduces monitoring overhead while maintaining complete scheduling coverage across all sidelink carriers through proper subset distribution.
Solution Approach 2:
The patent enables a single Uu component carrier to serve multiple functions by allowing it to be associated with multiple sidelink component carriers across different UE contexts. The network can flexibly configure which Uu CCs are monitored by which UEs for sidelink scheduling, allowing efficient resource utilization and reduced overall monitoring requirements in the system.
2Reliability
If UEs monitor all Uu component carriers for DCI 3_0s, then no sidelink transmission opportunities are missed, but power consumption and processing load increase
Solution Approach 1:
By segmenting the monitoring set into multiple Uu CC subsets assigned to different UEs, each UE monitors fewer carriers and thus consumes less power. The segmentation ensures that collectively all sidelink opportunities are covered while individually each UE has reduced power consumption and processing load.
Solution Approach 2:
Each UE performs partial monitoring of only its assigned Uu CC subset rather than excessive monitoring of all Uu CCs. This partial action is sufficient when combined with other UEs' monitoring activities, achieving complete system-wide coverage without requiring any single UE to perform excessive monitoring.
3Adaptability or versatility
If the network configures multiple Uu component carriers for sidelink scheduling, then scheduling flexibility and resource allocation efficiency improve, but system complexity and configuration overhead increase
Solution Approach 1:
The patent segments the configuration management by dividing Uu CCs into subsets and assigning each subset to specific UEs. This segmentation simplifies configuration management for each UE while maintaining overall system flexibility, as the network only needs to manage subset assignments rather than individual UE-specific configurations for all carriers.
Solution Approach 2:
The patent enables dynamic configuration where the network can flexibly assign and reassign Uu CC subsets to different UEs based on traffic conditions, channel quality, and resource availability. This dynamic approach maintains high scheduling flexibility while simplifying configuration management through centralized network control rather than complex distributed UE configurations.
Data Source
AI summary
This disclosure relates to sidelink carrier aggregation, and includes a method and apparatus for receiving a configuration indicating a subset of Uu component carriers (CCs) of a plurality of Uu CCs from a network entity; receiving a downlink control information (DCI) via the subset of Uu CCs from the network entity based on receiving the configuration, wherein the DCI schedules sidelink transmissions for the first UE via a plurality of sidelink CCs; and communicating on a subset of sidelink CCs with a second user equipment (UE) based on the DCI.