Virtual Antenna Panel Mapping for Reference Signal Measurement
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently mapping reference signal resources to virtual antenna panels, particularly in scenarios where the number of physical antenna panels is not explicitly known, leading to suboptimal signal measurement and transmission.
Innovation Solution
The method involves determining and mapping virtual antenna panels to groups of antenna ports, which correspond to portions of physical antenna panels, and allocating reference signal resources to these virtual panels, allowing for efficient signal transmission and reception without requiring explicit knowledge of the physical panel configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explicit indication of physical antenna panels is used, then communication quality can be maintained, but device complexity and power management become more difficult
Solution Approach 1:
The patent creates virtual antenna panels that are logical copies or representations of physical antenna panels. Each virtual panel corresponds to one or more physical panels but can be independently managed and configured. This allows the system to work with simplified virtual representations rather than directly managing complex physical panel configurations, thereby reducing device complexity while maintaining communication quality through the virtual-to-physical mapping relationship.
Solution Approach 2:
The virtual antenna panels serve as an intermediary layer between the physical antenna panels and the reference signal resources. Instead of directly mapping reference signals to physical panels (which increases complexity), the patent introduces virtual panels as mediators that simplify the mapping process. The base station manages reference signal resources through virtual panels, which then map to underlying physical panels, thus reducing overall system complexity while preserving communication reliability.
2Device complexity
If virtual antenna panels are introduced, then device complexity is reduced and power management is simplified, but measurement precision of reference signals may be affected
Solution Approach 1:
The patent segments the relationship between reference signal resources and physical antenna panels by introducing virtual antenna panels as an intermediate layer. This segmentation allows reference signals to be mapped to virtual panels in a simplified manner while maintaining the ability to precisely measure channel characteristics through the virtual-to-physical mapping. The segmentation reduces complexity by abstracting away the detailed physical panel configuration while preserving measurement precision through the maintained correspondence relationships.
Solution Approach 2:
Virtual antenna panels create logical copies of physical panel configurations, allowing reference signal measurements to be performed on the simplified virtual structure while still accurately reflecting the physical channel characteristics. The copying mechanism ensures that measurement precision is maintained because the virtual panels preserve the essential mapping relationships to physical panels, enabling accurate channel state information acquisition without the complexity of direct physical panel management.
3Productivity
If reference signal resources are mapped to virtual panels, then antenna switching efficiency is improved, but the number of mapping relationships increases system complexity
Solution Approach 1:
The patent uses virtual antenna panels as simplified copies that enable efficient antenna switching without requiring complex direct mappings between reference signals and physical panels. Each virtual panel can be independently activated or deactivated, allowing rapid switching between different antenna configurations. The copying mechanism reduces switching complexity because the system only needs to manage virtual panel states rather than directly reconfiguring physical panel mappings, thereby improving productivity while controlling complexity.
Solution Approach 2:
Virtual antenna panels act as intermediaries that simplify the antenna switching process. Instead of directly managing complex mappings between reference signal resources and physical panels during switching operations, the system uses virtual panels as mediators that abstract the switching complexity. The base station can efficiently switch between virtual panels, and the underlying physical panel mappings are automatically managed through the virtual-to-physical correspondence, thus improving switching efficiency while the intermediary layer manages the mapping complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a plurality of virtual antenna panels, wherein the plurality of virtual antenna panels correspond to a plurality of groups of antenna ports and map to one or more portions of at least one physical antenna panel. The UE may map a plurality of reference signal resources to the plurality of virtual antenna panels. The UE may transmit, to a base station and based at least in part on the mapping, reference signals using the plurality of reference signal resources. Numerous other aspects are provided.