Reference Signal Measurement Filtering in Multi-Beam Wireless Systems
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Solution Overview
Problem
In wireless communication systems, particularly in multi-beam operations, user equipment (UE) face challenges in accurately measuring reference signals (RSs) due to varying beam shapes, which can lead to incorrect signal quality estimates and event triggers without proper filtering guidance.
Innovation Solution
A method where a base station determines and signals a beam configuration to the UE, indicating whether the beam shape for RSs is static or dynamic, allowing the UE to perform appropriate measurement filtering procedures based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE performs measurements on reference signals transmitted via multiple beams with varying beam shapes, then the measurement coverage and signal reception are improved, but the measurement accuracy deteriorates due to incorrect signal quality estimates
Solution Approach 1:
The base station performs preliminary action by determining the beam configuration and signaling it to the UE before the UE performs measurements. This allows the UE to know in advance whether the beam shape is static or dynamic, enabling it to apply appropriate filtering procedures and avoid incorrect signal quality estimates, thus resolving the measurement accuracy issue while maintaining multi-beam measurement coverage
Solution Approach 2:
The invention changes the measurement parameters based on the beam configuration. When the beam shape is static, the UE applies filtering with specific parameters; when dynamic, the UE adjusts or disables filtering. This parameter adaptation allows accurate measurements across multiple beams with varying configurations, resolving the contradiction between measurement coverage and accuracy
2Measurement precision
If the UE applies measurement filtering to reference signals, then the signal quality estimation accuracy is improved, but the complexity of measurement procedures increases
Solution Approach 1:
The invention makes the measurement procedure dynamic by conditioning filtering application on the beam configuration. The UE dynamically adjusts whether to apply filtering based on whether the beam shape is static or dynamic, as indicated by the base station. This dynamic approach improves accuracy when needed while avoiding unnecessary complexity when filtering is not appropriate, resolving the contradiction between precision and procedure complexity
3Adaptability or versatility
If the beam shape for reference signals varies over time, then the adaptability to different channel conditions is improved, but the reliability of measurements deteriorates due to incorrect event triggers
Solution Approach 1:
The base station performs preliminary action by signaling the beam configuration (static or dynamic) to the UE before measurements are performed. This allows the UE to anticipate whether beam shapes will vary and apply appropriate filtering procedures in advance, preventing incorrect event triggers and maintaining measurement reliability while preserving adaptability to different channel conditions
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AI summary
Techniques for performing reference signal measurement filtering in systems that support multi-beam operation are provided. A method for wireless communication by a base station (BS) includes determining at least one beam configuration for measuring reference signals transmitted from the apparatus, and signaling the beam configuration(s) to at least one user equipment (UE). A method for wireless communication by a UE includes receiving, from a BS, at least one beam configuration for measuring reference signals from the BS, and performing a measurement procedure for reference signals received from the BS based at least in part on the beam configuration(s).