Multiple SRS Resource Sets for Antenna Switching in NR
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing multiple SRS resource sets for antenna switching, particularly in New Radio (NR) networks, due to increased interference and complexity, which affects uplink MIMO performance and wider band operations.
Innovation Solution
Implementing a method where a base station configures user equipment (UE) with multiple SRS resource sets for antenna switching, adhering to specific constraints such as same antenna switching type, timing behavior, and spatial reception information, to reduce UE complexity and improve SRS transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple SRS resource sets are configured for antenna switching in NR, then uplink MIMO performance and wider band operation are improved, but UE complexity and interference increase
Solution Approach 1:
The patent segments SRS resource sets into multiple groups where each group is associated with specific antenna switching types. By dividing the resource sets and applying constraints within each group, the system enables improved uplink MIMO performance through multiple resource sets while controlling UE complexity by limiting the number of concurrent switching types the UE must handle.
Solution Approach 2:
The patent introduces dynamic constraints that adapt to different antenna switching types (e.g., Type 1, Type 2, Type 3 switching). The base station dynamically configures resource sets based on UE capability and network requirements, allowing the system to optimize performance while managing complexity through flexible, condition-based resource allocation.
2Adaptability or versatility
If multiple SRS resource sets with different antenna switching types are configured, then versatility is improved, but interference and management complexity increase
Solution Approach 1:
The patent applies different antenna switching types to specific local contexts or resource set groups rather than uniformly across all resources. Each resource set can be optimized for its specific function (e.g., Type 1 for certain bands, Type 2 for others), providing local optimization that maintains versatility while reducing overall interference through targeted, context-appropriate switching strategies.
Data Source
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AI summary
In an aspect, a method of wireless communication includes transmitting a configuration message, by a base station to a user equipment (UE), that configures the IJ K, according to one or more antenna switching constraints, with multiple sounding reference signal (SRS) resource sets for antenna switching by the UE. The method also includes receiving one or more SRS, by the base station, transmitted by the UE according to the configuration of the multiple SRS resource sets, in another aspect, a method of wireless communication includes receiving a configuration message, by a user equipment (UE) from a base station, that configures the UE, according to one or more antenna switching constraints, with multiple sounding reference signal (SRS) resource sets for antenna switching by the UE. The method also includes transmitting one or more SRS, by the UE to the base station, according to the configuration of the multiple SRS resource sets.