UE Receive Resource Allocation for Multi-Cell MIMO Throughput
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Solution Overview
Problem
Existing wireless communications systems face inefficiencies in allocating receive resources for MIMO communications, leading to unused resources and reduced data throughput due to underconfiguration of MIMO layers at user equipment (UEs).
Innovation Solution
The UE allocates unused receive resources to serving cells based on factors such as bandwidth, effective downlink bandwidth ratio, and existing resource allocation, determining the highest throughput cell to assign these resources, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE is configured with a limited number of MIMO layers based on initial resource allocation, then the base station can simplify resource management, but unused receive resources remain at the UE leading to reduced data throughput
Solution Approach 1:
The patent implements dynamic resource allocation where the UE autonomously adjusts receive resource allocation based on real-time channel conditions and throughput requirements. The UE determines whether to allocate unused receive resources to additional MIMO layers or to enhance existing layers, creating a dynamic adaptation mechanism that improves throughput without requiring complex base station intervention for each adjustment
Solution Approach 2:
The patent employs feedback mechanisms where the UE reports channel quality indicators and resource utilization status to the base station. Based on this feedback, the base station can adjust the configured MIMO layers, while the UE simultaneously performs autonomous optimization of resource allocation within the configured limits, creating a closed-loop system that balances complexity and throughput
2Productivity
If the UE autonomously allocates unused receive resources to multiple cells, then resource utilization improves, but the UE processing complexity increases
Solution Approach 1:
The patent divides the resource allocation process into distinct segments: the base station handles high-level configuration of MIMO layers per cell, while the UE handles autonomous allocation of unused receive resources. This segmentation allows the UE to operate with simplified processing rules (allocate unused resources to cells with best channel conditions) while achieving overall system optimization
Solution Approach 2:
The patent enables the UE to self-manage its receive resource allocation by autonomously determining how to distribute unused receive resources across configured cells based on local channel conditions. This self-service approach eliminates the need for complex centralized control while improving resource utilization, as the UE independently optimizes its own resource allocation without increasing overall system complexity
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AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a base station, a UE capability message associated with a number of downlink multiple-input and multiple-output (MIMO) layers supported at the UE. The UE may receive a configuration for a set of downlink MIMO layers including a first subset of downlink MIMO layers configured for a first cell and a second subset of downlink MIMO layers configured for a second cell. The UE may allocate a first set of resources to the first cell or the second cell, or both, based on the first and the second subset of downlink MIMO layers. The UE may determine a second set of resources are unallocated to the set of downlink MIMO layers and allocate the second set of resources to the first cell or the second cell, or both.