Beam Switching Capability Reporting for Wireless Devices
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Solution Overview
Problem
Current wireless communication systems lack the necessary granularity in reporting beam switching capabilities, particularly for devices with multiple antenna modules and subarrays, leading to inefficient resource allocation and increased latency in high-frequency bands.
Innovation Solution
The implementation of techniques that allow wireless devices to report beam switching capabilities on a per-antenna module and per-antenna subarray basis, enabling more precise scheduling of communications based on individual RF settling times and beam switching times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If beam switching capability is reported at a coarse granularity level, then device complexity is reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The beam switching capability reporting is segmented into multiple granularity levels. The UE reports capability information separately for different antenna modules and antenna subarrays, allowing the network to allocate resources efficiently based on specific hardware characteristics while the UE manages complexity through structured, modular reporting.
2Productivity
If beam switching capability is reported at a fine granularity level (per-antenna module and per-antenna subarray), then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The capability reporting is divided into hierarchical segments: antenna module-level capabilities and antenna subarray-level capabilities. This segmentation allows detailed reporting where needed while maintaining manageable complexity through organized, modular information structure.
Solution Approach 2:
Different levels of reporting detail are applied to different antenna components based on their specific characteristics. Each antenna module and subarray reports capability information appropriate to its local requirements, enabling precise resource allocation without uniformly increasing complexity across all components.
3Speed
If RF settling time is not properly managed during beam switching, then beam switching speed is increased, but communication reliability deteriorates
Solution Approach 1:
The UE reports its RF settling time characteristics in advance through capability signaling. The network uses this pre-reported information to schedule beam switching operations appropriately, allowing the RF components to settle properly before new beam configurations are activated, thus maintaining communication reliability while enabling efficient beam switching.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first wireless device may transmit, to a second wireless device, capability control signaling indicating a first quantity of beam switches is supported within a first time period for a first antenna subarray, a first antenna module, or both, of the first wireless device. The first wireless device may receive from the second wireless device in accordance with the capability control signaling, a grant scheduling one or more messages and indicating a set of beams of the first wireless device over which to communicate the one or more messages in respective transmission time intervals (TTIs) of the first time period. The first wireless device may then transmit or receive, over the first time period using the first antenna subarray, the first antenna module, or both, the one or more messages using the set of beams.