Adaptive RX Beam Sweep Configuration for Wireless Timing Variability
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Solution Overview
Problem
Conventional beam sweep procedures in wireless communication systems are time-consuming, leading to long measurement delays and high power consumption.
Innovation Solution
A method for RX beam sweep adaptation/optimization based on beam timing variability, where a wireless device adjusts its beam sweeping configuration using either a first or second receiver activity pattern depending on the beam timing variability parameter relative to a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional beam sweep procedures are used to ensure reliable beam detection and selection, then measurement accuracy is improved, but measurement time increases and power consumption increases
Solution Approach 1:
The patent implements dynamic beam sweeping by adapting the receiver activity pattern based on beam timing variability. When timing variability is low, the system uses a relaxed activity pattern with reduced monitoring frequency. When timing variability exceeds a threshold, the system transitions to a normal activity pattern with full monitoring. This dynamic adaptation allows the measurement system to maintain accuracy when needed while reducing time consumption when conditions permit.
Solution Approach 2:
The system changes the operational parameters of beam sweeping based on measured timing variability. By monitoring the timing variability parameter and comparing it against a threshold, the system adjusts the receiver activity pattern parameter to optimize the balance between measurement precision and measurement time. This parameter-based adaptation enables the system to respond to changing channel conditions efficiently.
2Measurement precision
If conventional beam sweep procedures are used to ensure reliable beam tracking, then measurement accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power management for beam tracking by adjusting the receiver activity pattern based on real-time timing variability measurements. When the beam timing variability remains below the threshold, the system operates in a power-saving mode with reduced receiver activity. When variability exceeds the threshold, the system increases receiver activity to maintain tracking accuracy. This dynamic approach ensures that power consumption is optimized without sacrificing tracking reliability when channel conditions deteriorate.
Solution Approach 2:
The system dynamically changes the receiver activity pattern parameter based on the beam timing variability parameter. By adjusting this operational parameter in response to measured conditions, the system achieves an optimal balance between measurement precision and power consumption, adapting its energy usage to the actual channel stability rather than maintaining constant high-power operation.
3Reliability
If beam sweeping is performed frequently to track beam changes in dynamic environments, then beam tracking reliability is improved, but measurement time and power consumption increase
Solution Approach 1:
The patent employs feedback mechanisms where the beam timing variability measurement feeds back into the determination of the receiver activity pattern. The system continuously monitors timing variability and uses this feedback to adjust the beam sweeping frequency and receiver activity. This closed-loop control ensures that beam tracking reliability is maintained by increasing activity only when timing variability indicates deteriorating channel conditions, rather than using fixed frequent sweeping regardless of actual channel state.
Data Source
AI summary
A computer-implemented method performed by a wireless device in a wireless communication system is disclosed. The method comprises obtaining a beam timing variability parameter indicative of a change in receive (RX) timing for a reference signal associated with an RX beam. Then, if the beam timing variability parameter is above a threshold, the method comprises using an RX beam sweeping configuration in accordance with a first receiver activity pattern. Further, if the beam timing variability parameter is below the threshold, the method comprises using an RX beam sweeping configuration in accordance with a second receiver activity pattern.