SSB Burst Set Optimization for Millimeter Wave Beam Squinting
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Solution Overview
Problem
Conventional communication systems do not effectively manage the number of synchronization signal blocks (SSBs) in millimeter wave ultra-wideband beamforming systems, leading to reduced array gains and link margins due to beam squinting.
Innovation Solution
A method for operating a base station to determine a lower bound on the number of directional beams used for millimeter wave wideband communications, based on operating conditions, and transmitting SSB messages in an SSB Burst Set consistent with this lower bound to balance performance and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of SSBs is reduced to improve operating efficiency, then power consumption and processing load are reduced, but beam squinting occurs which degrades array gains and link margins
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the number of SSBs transmitted based on operating conditions such as bandwidth configuration, beamforming settings, and network load. The base station determines an appropriate number of SSBs from a set of candidate values, changing this parameter to optimize the balance between operating efficiency and link performance under different operational scenarios.
2Reliability
If the number of directional beams is increased to improve array gains and communication link performance, then beam coverage and signal strength are enhanced, but the complexity of beam management and processing increases
Solution Approach 1:
The patent implements partial action by transmitting only the necessary number of SSBs required to achieve adequate coverage and performance, rather than transmitting all possible beams. The base station determines a specific number of SSBs from candidate values based on operating conditions, transmitting enough to maintain link performance while avoiding the excessive complexity of managing all potential beams.
3Reliability
If SSBs are transmitted frequently to improve synchronization accuracy and network access reliability, then wireless devices can quickly register and monitor broadcast signals, but power consumption and network overhead increase
Solution Approach 1:
The patent applies dynamics by making the SSB transmission configuration adaptive rather than static. The base station determines the number of SSBs dynamically based on current operating conditions including bandwidth, beamforming configuration, and network load, allowing the system to adjust transmission frequency and quantity to balance synchronization accuracy with power consumption requirements.
Data Source
AI summary
Methods and systems for operating a base station to reduce beam squinting include determining a lower bound on the number of directional beams used by the base station for millimeter wave wideband communications (e.g., based on operating conditions of the base station or wireless devices within the coverage area of the base station) and transmitting synchronization signal block (SSB) messages in an SSB Burst Set consistent with the determined lower bound on the number of directional beams used by the base station for millimeter wave wideband communications.