Wireless Beam Management for High-Frequency Initial Synchronization
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Solution Overview
Problem
The initial connection and synchronization process between terminal devices and base stations in wireless communication systems, particularly in high-frequency bands, is challenged by path losses and the need for efficient beam management to ensure proper communication setup.
Innovation Solution
The implementation of beamforming techniques for synchronization signals, where base stations repetitively transmit synchronization signals using different transmit beams, and terminal devices provide feedback on matching beams for subsequent communication, optimizing beam management and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is applied to synchronization signal transmission in high-frequency bands, then communication quality is improved by compensating for path losses, but beam scanning overhead increases due to the need to test multiple transmit beams
Solution Approach 1:
The base station performs beam scanning and identifies optimal transmit beams during the initial synchronization phase before actual data communication begins. By pre-determining the best beams using synchronization signals, the system avoids the need for extensive beam scanning during subsequent data transmission, thus reducing overall beam scanning overhead while maintaining communication quality
Solution Approach 2:
The terminal device provides feedback information to the base station regarding the quality of received synchronization signals transmitted via different beams. This feedback mechanism enables the base station to identify optimal transmit beams efficiently, resolving the contradiction by using minimal beam testing combined with informative feedback to achieve reliable beam selection without excessive scanning overhead
2Reliability
If the base station repetitively transmits synchronization signals using multiple different transmit beams, then coverage and synchronization reliability are improved, but the complexity of beam management increases
Solution Approach 1:
The beam management process is segmented into distinct phases: initial beam scanning during synchronization, beam identification through feedback, and subsequent use of identified optimal beams for data communication. This segmentation reduces overall complexity by handling beam management tasks in organized stages rather than requiring continuous complex beam switching during all communication phases
Solution Approach 2:
The system uses the synchronization signal transmission itself to carry beam identification information, allowing the terminal to automatically determine which beam was used without requiring additional signaling overhead. This self-service approach reduces beam management complexity by embedding management information within the existing synchronization procedure
3Productivity
If beamforming is used during initial connection and synchronization, then communication setup efficiency is improved, but the device complexity increases due to additional beam configuration requirements
Solution Approach 1:
The patent merges beamforming operations with the existing synchronization signal transmission process. By combining beam scanning, synchronization signal transmission, and beam identification into a unified initial access procedure, the system improves communication setup efficiency without requiring separate complex beam configuration steps, thus limiting the increase in device complexity
Data Source
AI summary
The disclosure relates to an electronic device and method for a wireless communication system, and a storage medium. Various embodiments regarding beam management are described. In one embodiment, an electronic device for a terminal device side in a wireless communication system can comprise a processing circuit system. The processing circuit system can be configured to obtain random access configuration information, and send a random access preamble based on the random access configuration information, so as to indicate one or more transmission beams of a base station side, in a downlink, paired with one or more receiving beams at the terminal device side.