Beam Sweeping Type Determination for Wireless Communication
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Solution Overview
Problem
The challenge in wireless communication systems is to coordinate beam sweeping between network devices and terminal devices to maintain high beamforming gain and communication quality, especially in environments with user movement and obstacles, while minimizing signaling overheads.
Innovation Solution
The method involves determining the beam sweeping type based on configuration information sent by the network device, which includes resource set index information, quasi co-location (QCL) information, and other parameters, to optimize beamforming and reduce signaling overheads by using pre-defined correspondences between configuration information and beam sweeping types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a narrow beam is used to obtain higher beamforming gain, then received power and signal-to-noise ratio are improved, but communication reliability deteriorates due to beam misalignment caused by user movement and obstacles
Solution Approach 1:
The patent implements dynamic beam management through multiple beam sweeping types (P-1, P-2, P-3) that can be flexibly selected and switched based on channel conditions, user movement, and obstacle presence. This allows the system to adapt beam directions in real-time, maintaining both high beamforming gain and communication reliability by transitioning between narrow beams (for gain) and wider beam sweeping patterns (for alignment tracking).
Solution Approach 2:
The patent changes beam parameters including beam width, sweeping pattern, and beam pair selection dynamically. By adjusting these parameters based on channel state information and movement detection, the system optimizes the balance between beamforming gain (narrower beams) and alignment robustness (wider beams or frequent sweeping), resolving the contradiction between precision and reliability.
2Reliability
If multiple beam pairs are used for channel measurement in rich scattering environments, then communication quality is improved, but signaling overheads increase
Solution Approach 1:
The patent segments beam management into distinct types (P-1, P-2, P-3) with different sweeping patterns and reporting requirements. This segmentation allows the system to select appropriate beam measurement strategies for different scenarios, reducing unnecessary signaling overhead while maintaining communication quality through targeted use of multiple beam pairs when needed.
Solution Approach 2:
The patent creates a universal beam management framework where a single set of configuration parameters and procedures can handle multiple beam sweeping types and scenarios. This multi-functionality allows the system to efficiently manage multiple beam pairs for channel measurement without requiring separate signaling mechanisms for each case, thereby reducing overall signaling overhead while maintaining communication quality.
Data Source
AI summary
The present disclosure relates to wireless communication methods, network devices, and terminal devices. One example method includes receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to indicate a beam sweeping type, and determining, by the terminal device, the beam sweeping type based on the configuration information.