Dynamic Beam-Level Filter Allocation in 5G Wireless Devices
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Solution Overview
Problem
In the context of 5G New Radio (NR) systems, wireless devices face challenges in managing beam-level measurement filters due to varying numbers and rankings of detected beams per cell, limited filter resources, and frequent changes in beam availability, which complicates the selection and maintenance of beam-filters for accurate cell quality derivation and measurement reporting.
Innovation Solution
A method where wireless devices dynamically allocate and reallocate beam-level filters based on detected signal levels and resource availability, prioritizing filters for beams with strong signal strengths and reallocating them as necessary to ensure efficient beam-level quality measurements, with the option to receive rules from a network node for filter management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam-level filters are allocated to all detected beams, then measurement precision is improved, but device complexity increases due to limited filter resources
Solution Approach 1:
The patent applies local quality by allocating filter resources non-uniformly across different beams based on their individual characteristics. Specifically, beams with stronger signal strengths or higher priorities receive filter allocation, while weaker beams may share or skip filtering. This selective approach maintains measurement precision for critical beams while reducing overall device complexity.
Solution Approach 2:
The patent implements partial action by applying beam-level filtering only to a subset of detected beams rather than all beams. The network node configures the wireless device to allocate filters based on criteria such as signal strength thresholds, priority levels, or specific beam identifiers. This partial filtering approach achieves adequate measurement precision for decision-making while conserving limited filter resources and reducing complexity.
2Adaptability or versatility
If beam-level filters are dynamically reallocated, then adaptability is improved, but loss of time occurs due to frequent filter management operations
Solution Approach 1:
The patent implements periodic action by establishing fixed periods during which beam-level filter allocations are reviewed and potentially updated. The network node and wireless device evaluate beam conditions at these periodic intervals and adjust filter allocations accordingly. This approach maintains adaptability to changing beam conditions while reducing the frequency of filter management operations, thereby minimizing time loss compared to continuous reallocation.
3Productivity
If filters are allocated based on signal strength, then productivity is improved, but measurement precision may deteriorate for weak beams
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting filter allocation decisions based on signal strength parameters. The network node configures the wireless device to evaluate beam signal strengths and allocate filters accordingly - stronger beams receive filter allocation to improve processing efficiency, while weaker beams may use alternative measurement approaches or shared filters. This parameter-based allocation optimizes overall productivity while maintaining acceptable precision through configurable thresholds and priority mechanisms.
Data Source
AI summary
A method for use in a wireless device comprises detecting a first set of beamformed signals from one or more cells. The method further comprises allocating beam-level filters of the wireless device to a subset of beamformed signals of the first set of beamformed signals based on the detected beamformed signals. The method further comprises monitoring the subset of the first set of beamformed signals using the allocated beam-level filters. A wireless device comprises one or more interfaces, memory, and processing circuitry. The processing circuitry is configured to execute instructions stored in the memory, whereby the wireless device is configured to perform the method above.