Dynamic Beam Sweeping Order for Millimeter Wave UE
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Solution Overview
Problem
In millimeter wave wireless systems, user equipment (UE) faces inefficiencies in establishing optimal transmit/receive beam pairs due to the current beam sweeping methods, which can result in delays in updating preferred beams, especially in scenarios involving mobility or changing channel conditions.
Innovation Solution
The UE measures signal aspects for multiple receive beams associated with a synchronization signal block transmitted by a base station on a transmit beam, determines a preferred beam, and initiates a beam-sweeping procedure where the preferred beam is measured first, followed by other receive beams. This approach ensures that the UE can efficiently update its preferred beam without delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE sweeps over all viable receive beams in a fixed order to find the best beam, then the UE can establish optimal transmit/receive beam pairs, but delays occur in updating preferred beams especially in mobility or changing channel conditions
Solution Approach 1:
The patent makes the beam sweeping order dynamic by adjusting it based on detected changes in channel conditions or mobility status. Instead of using a fixed predetermined order, the UE adapts the sweeping sequence to prioritize beams that are more likely to be optimal under current conditions, thereby reducing beam update delays while maintaining optimality.
Solution Approach 2:
The patent applies preliminary action by performing channel quality measurements and detecting changes in channel conditions or mobility status before initiating the beam sweeping procedure. This allows the UE to pre-determine an optimized sweeping order that anticipates the most promising beams to measure first, reducing the time required to identify optimal beam pairs.
2Ease of operation
If the UE measures all receive beams in a predetermined order, then the measurement procedure is simple to implement, but the efficiency of establishing optimal beam pairs decreases in dynamic environments
Solution Approach 1:
The patent introduces dynamics into the measurement procedure by making the beam sweeping order adaptive rather than fixed. The UE detects changes in channel conditions or mobility status and adjusts the measurement sequence accordingly, prioritizing beams that are more likely to yield optimal results. This maintains operational simplicity while significantly improving beam establishment efficiency in dynamic environments.
Solution Approach 2:
The patent changes the parameter of beam measurement order from a static predetermined sequence to a dynamic sequence that varies based on detected channel conditions or mobility status. By adjusting this parameter adaptively, the system achieves higher productivity in beam establishment without substantially complicating the overall measurement procedure.
Data Source
AI summary
Methods, systems, and devices for wireless communications at a user equipment (UE) are described. Aspects of the described techniques may include the user equipment measuring signal aspects for a plurality of respective receive beams for receiving communications associated with a synchronization signal block transmitted by a base station on a transmit beam. From the measured signal aspects, the UE may determine that a receive beam from the plurality of receive beams is a preferred beam for receipt of communications from the base station transmitted on the transmit beam. With the determined preferred beam, the UE may initiate a beam-sweeping procedure to re-measure the plurality of UE receive beams, where the UE measures the first UE receive beam before measuring others of the plurality of UE receive beams.