Beamforming Scheduling for Multi-UE Directionality
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling communication with multiple user equipment (UEs) during the same time interval, particularly in terms of bandwidth allocation and beamforming, which affects bandwidth efficiency and spectral efficiency.
Innovation Solution
A method and apparatus that determine beamforming directions and signal-to-noise ratios (SNRs) of UEs to schedule communication using a single communication beam, allocating bandwidth resources and adjusting beam width to encompass multiple UEs' beamforming directions, thereby improving bandwidth efficiency and spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a narrow communication beam is used to communicate with multiple UEs, then beamforming gain is improved, but the beam cannot encompass all UE directions
Solution Approach 1:
The patent applies dynamics by making the beam width adjustable rather than fixed. The beamforming apparatus dynamically adapts the beam width based on the spatial distribution of scheduled UEs, allowing the system to optimize between narrow beams for high gain and wide beams for broad coverage depending on the specific scheduling scenario.
Solution Approach 2:
The patent changes the beam width parameter according to the number and spatial distribution of scheduled UEs. When multiple UEs are scheduled in the same time interval, the system adjusts the beam width parameter to encompass all UE directions while maintaining adequate beamforming gain, resolving the contradiction between narrow beam advantage and multi-UE coverage requirement.
2Productivity
If bandwidth resources are allocated to multiple UEs in the same time interval, then bandwidth efficiency is improved, but interference management becomes more complex
Solution Approach 1:
The patent applies local quality by allocating different bandwidth resources to different UEs based on their specific channel conditions, beamforming directions, and quality of service requirements. Each UE receives customized bandwidth allocation within the same time interval, allowing efficient resource utilization while managing interference through localized resource assignment.
Solution Approach 2:
The patent segments the total bandwidth into multiple resource blocks and allocates them to different UEs scheduled in the same time interval. This segmentation allows the system to improve bandwidth efficiency by utilizing the full spectrum resources simultaneously for multiple UEs while managing interference through orthogonal resource allocation.
3Productivity
If multiple UEs are scheduled in the same time interval, then system throughput is improved, but beamforming precision is reduced
Solution Approach 1:
The patent uses dynamics to adjust the beam width based on the scheduling scenario. When multiple UEs are scheduled in the same time interval, the system dynamically widens the beam to encompass all UE directions. This dynamic adaptation allows the system to maintain adequate beamforming precision while achieving high system throughput through parallel multi-UE communication.
Data Source
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AI summary
A method, an apparatus, and a computer program product for beamforming in a wireless communication are provided. The apparatus determines a beamforming direction and a SNR of at least two user equipments (UEs) and determines whether to schedule communication with the at least two UEs during a same time interval via a single communication beam based on the beamforming directions and the SNRs of the at least two UEs. When the communication with the at least two UEs during the same time interval via the single communication beam is scheduled, the apparatus allocates bandwidth resources respectively among the at least two UEs, sizes a width of the single communication beam to encompass the beamforming directions of the at least two UEs, and communicates with one or more of the at least two UEs during the same time interval via a respectively allocated bandwidth resource using the sized single communication beam.