Dynamic Beam Allocation for Wireless Spectrum Utilization
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Solution Overview
Problem
In Orthogonal Frequency Division Multiple Access (OFDMA) systems, the fixed beam configuration leads to underutilization of resource blocks, resulting in lower overall spectrum utilization as only one set of beams can be configured per time slot, even if they do not support the highest data rate for all user equipment.
Innovation Solution
Implementing a hybrid beamforming architecture that allows the base station to select and allocate resource blocks to both primary and secondary user equipment based on traffic demands, using a beam management procedure to steer beams towards optimal directions, and allocating remaining resource blocks to secondary users achieving acceptable signal quality and maximizing spectrum utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a fixed beam combination is configured in a time slot, then high data rate can be supported for UEs in some RBs, but the remaining RBs become underutilized, lowering overall spectrum utilization
Solution Approach 1:
The patent applies dynamics by making the beam configuration changeable over time. Instead of using a fixed beam combination throughout a time slot, the system dynamically selects and configures different beam combinations for different time slots based on current traffic conditions and channel states. This allows the system to adapt beam configurations to match varying UE requirements, thereby improving both data rates for specific UEs and overall spectrum utilization across all RBs.
Solution Approach 2:
The patent changes the parameter of beam configuration from fixed to variable. By modifying beam combinations dynamically based on traffic demands and channel conditions, the system can optimize performance for different scenarios. This parameter change enables the system to switch between different beam configurations to serve different UE groups with different requirements, resolving the contradiction between supporting high data rates and maximizing spectrum utilization.
2Device complexity
If only one fixed set of beams is configured per time slot, then device complexity is reduced, but resource allocation flexibility and spectrum utilization deteriorate
Solution Approach 1:
The system introduces dynamic beam configuration where the set of beams changes over time slots based on traffic conditions. This dynamic approach maintains relative simplicity in each individual time slot while providing flexibility across multiple time slots, resolving the contradiction between low complexity and high adaptability.
Solution Approach 2:
The patent implements periodic reconfiguration of beam combinations across time slots. By periodically updating beam configurations based on channel conditions and traffic demands, the system achieves adaptability without requiring complex real-time changes within each time slot, thus balancing complexity and flexibility.
Data Source
AI summary
A method for allocating wireless resources for a number of user equipment in a wireless communication system is applied in an apparatus. The apparatus collects the traffic demands of all the user equipment and then selects a beam based on the traffic demands of all the user equipment in every time slot to make better utilization of resource blocks.