5G Beam Searching with Variable-Width Reception Beams
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Solution Overview
Problem
In 5G communication systems using mmWave frequencies, beam searching during beamforming is time-consuming, leading to increased power consumption and a higher probability of radio link failure due to the dynamic nature of channel environments.
Innovation Solution
An electronic device with an antenna array generates multiple reception beam sets of varying widths to efficiently perform frequency scanning and beam selection, allowing for rapid beam alignment and adaptation to changing channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam searching is performed using conventional methods in mmWave 5G systems, then beam alignment can be achieved, but the time required for beam searching increases and power consumption increases
Solution Approach 1:
The patent divides the beam searching process into two distinct stages: initial beam searching using wide beams to quickly identify candidate directions, and refined beam searching using narrow beams to precisely determine the optimal beam. This segmentation allows the system to balance between searching speed and alignment accuracy, reducing overall beam searching time while maintaining reliability.
Solution Approach 2:
The patent dynamically adjusts beam width based on the searching stage and channel conditions. Wide beams are used initially for rapid coverage, then the system transitions to narrow beams for precise alignment. This dynamic adaptation optimizes the trade-off between searching time and alignment accuracy in different operational phases.
2Reliability
If beam searching is performed using conventional methods, then beam alignment can be achieved, but power consumption for beamforming increases
Solution Approach 1:
The patent segments the beamforming power consumption into two phases: initial scanning using wide beams with lower power requirements to identify candidate directions, and refined searching using narrow beams with higher power only when necessary for final alignment. This reduces overall power consumption compared to continuously using narrow beams throughout the entire searching process.
Solution Approach 2:
The patent applies partial action by using wide beams for the majority of the searching process to cover all potential directions, and only employs narrow beams partially for final precision alignment when candidate directions are identified. This avoids the excessive power consumption of using narrow beams for the entire searching duration.
3Measurement precision
If beam searching time is increased, then more thorough beam alignment can be achieved, but the probability of radio link failure increases due to dynamic channel environment
Solution Approach 1:
The patent segments the beam searching process to quickly identify candidate beams using wide beams, then rapidly refine to narrow beams for precise alignment. This segmented approach reduces total searching time, allowing the system to adapt more quickly to dynamic channel changes and reduce radio link failure probability while maintaining sufficient alignment precision.
Solution Approach 2:
The patent performs preliminary beam searching using wide beams to identify candidate directions before committing to narrow beam formation. This preliminary action allows the system to quickly adapt to channel changes and select appropriate beams, reducing the risk of radio link failure in dynamic environments while ensuring adequate alignment precision through subsequent refinement.
Data Source
AI summary
The disclosure relates to a communication technique for a 5G communication system for supporting a higher data transfer rate after a 4G system, and a system therefor. The disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, and a service relating to security and safety), based on a 5G communication technology and an IoT-related technology. The disclosure relates to a method and device for performing beam searching in a mobile communication system using beamforming.