Uplink Beam Sweeping with Adaptive Resource-Block Spatial Relations
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Solution Overview
Problem
The reliability and robustness of uplink channels in wireless communication systems, particularly in scenarios involving beam sweeping, are not adequately addressed by existing technologies.
Innovation Solution
A method and device for wireless communication that employs beam sweeping by using a first information block set to activate a first and second information element, where the first information element determines the spatial relation of a radio resource block when it comprises multiple sub-blocks, enhancing the reliability and robustness of uplink channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam sweeping is employed to enhance uplink channel reliability, then the reliability and robustness improve, but the device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the uplink channel transmission into multiple resource sub-blocks, each associated with different spatial relations (first and second information elements). This segmentation allows the system to transmit the same data through multiple spatial paths, thereby enhancing reliability without requiring complete redesign of the transmission system.
Solution Approach 2:
The patent introduces dynamic selection of spatial relations based on the number of resource sub-blocks. When K>1, the system dynamically switches between first and second information elements to determine spatial relations for different sub-blocks. This dynamic adaptation enables the system to optimize reliability based on channel conditions while managing complexity through conditional logic.
2Reliability
If multiple information elements are used to determine spatial relations for multiple resource sub-blocks, then the robustness improves, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent makes the first and second information elements universal by allowing them to serve multiple functions: they can be used for determining spatial relations of different resource sub-blocks depending on the configuration. This multi-functionality reduces the need for separate dedicated signaling for each spatial relation, thereby reducing overall signaling overhead while maintaining robustness.
Solution Approach 2:
The patent changes the parameter of spatial relation determination based on the number of resource sub-blocks (K). When K=1, only one information element is used; when K>1, both first and second information elements are utilized. This parameter-based adaptation allows the system to optimize between reliability and signaling overhead by adjusting the level of redundancy based on actual transmission needs.
Data Source
AI summary
A method and a device in a node for wireless communications are disclosed in the present disclosure. A first node receives a first information block set, receives a first signaling and a first signal, and transmits a first bit block in a first radio resource block. The first information block set is used to activate a first information element and a second information element out of N information elements; when the first radio resource block only comprises one resource sub-block, only one of the first information element and the second information element is used to determine a spatial relation of the first radio resource block; when the first radio resource block comprises K resource sub-blocks, K being a positive integer greater than 1, the first information element is used to determine a spatial relation of at least one resource sub-block in the first radio resource block.