Control Channel Resource Element Configuration for Wireless Nodes
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Solution Overview
Problem
In New Radio (NR) systems, the capacity of control channels often becomes a bottleneck, and existing technologies face challenges in ensuring effective coexistence and smooth evolution with other air interface technologies, particularly in scenarios requiring robustness and high capacity, such as Internet of Things (IoT), Ultra Reliable Low Latency Communication (URLLC), and V2X, where collisions between control channels and other signals are common.
Innovation Solution
A method is introduced where a first node receives information blocks to determine RE sets and monitor control channel candidates, establishing a characteristic resource subset relationship with the control resource set, optimizing channel estimation and precoding granularity to enhance control channel capacity and reduce complexity, while allowing for flexible design and quasi-colocation between reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control channel capacity is increased to meet diverse application scenario demands, then system performance is improved, but device complexity increases
Solution Approach 1:
The control resource set is segmented into multiple resource element sets, where different RE sets can be configured with different relationships to characteristic resource subsets. This segmentation allows the system to handle diverse application scenarios by selectively applying different configurations to different segments of the control channel resources.
Solution Approach 2:
The patent introduces dynamic configuration of the relationship between control resource sets and characteristic resource subsets through information blocks. The system can dynamically adjust whether RE sets overlap with characteristic resource subsets or maintain orthogonal relationships, allowing flexible adaptation to different capacity requirements without fixed complex structures.
2Reliability
If robustness is enhanced for URLLC and V2X scenarios through optimized RE set relationships, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the parameter of RE set configuration by introducing different relationship types (overlapping vs. orthogonal) between control resource sets and characteristic resource subsets. This parameter change allows the system to optimize for robustness in URLLC and V2X scenarios by selecting appropriate relationship configurations without requiring excessive precision in implementation.
3Adaptability or versatility
If spectrum sharing between NR and other air interface technologies is enabled, then adaptability is improved, but object-generated harmful factors increase due to collisions
Solution Approach 1:
The patent converts the harmful effect of channel collisions into a beneficial configuration option by allowing control resource sets to overlap with characteristic resource subsets in a controlled manner. Instead of avoiding all overlaps, the system selectively permits overlaps in specific RE sets while maintaining orthogonal relationships in others, thereby utilizing collision-prone scenarios to enhance spectrum sharing adaptability while managing interference through structured configuration.
Data Source
AI summary
The node receives a first information block and a second information block, the first information block determining a first RE set, the first RE set being used for first-type reference signals; and monitors control channel candidates in a first control resource set, the second information block determines a characteristic resource subset, the characteristic resource subset comprising multiple time-frequency units; the characteristic resource subset and the first RE set are in a relationship other than a characteristic relationship, the characteristic relationship being one of a first relationship or a second relationship; the first relationship includes the presence of at least one overlapping RE between only part of time-frequency units of the characteristic resource subset and the first RE set, while the second relationship includes that there exists at least one overlapping RE between the characteristic resource subset and the first RE set. This application improves performance and reduces complexity.