Dynamic RF Chain Assignment for MIMO Throughput
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Solution Overview
Problem
Current wireless communication systems, particularly in MIMO and carrier aggregation capable devices, face challenges in optimizing RF chain assignment to maximize throughput due to limited resources and changing channel conditions, leading to suboptimal performance.
Innovation Solution
A method where user equipment (UE) temporarily switches and evaluates RF chains among component carriers to determine the best assignment based on performance factors such as rank indication, signal-to-noise ratio, and network grant, optimizing RF chain allocation to enhance overall throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RF chains are statically assigned to component carriers, then device complexity is reduced, but throughput is suboptimal due to inability to adapt to changing channel conditions
Solution Approach 1:
The patent implements dynamic RF chain assignment where the system temporarily switches RF chains between component carriers to evaluate rank indications, then makes informed assignment decisions based on performance metrics. This dynamic approach allows adaptation to changing channel conditions while using structured evaluation criteria to manage complexity.
Solution Approach 2:
The system evaluates performance factors including rank indication, signal-to-noise ratio, and network grant after temporarily switching RF chains, then uses this feedback to make optimal assignment decisions. This feedback mechanism ensures throughput optimization while maintaining manageable complexity through systematic evaluation.
2Productivity
If RF chains are temporarily switched for evaluation, then throughput optimization is achieved, but loss of time occurs during evaluation process
Solution Approach 1:
The system performs preliminary evaluation by temporarily switching RF chains to assess rank indications and performance metrics before making final assignment decisions. This preliminary action ensures optimal throughput configuration while the evaluation process is integrated into the normal operation timeline to minimize time loss.
3Productivity
If more RF chains are assigned to a component carrier, then throughput increases, but device complexity increases
Solution Approach 1:
The system changes the assignment parameters by evaluating multiple factors including rank indication, signal-to-noise ratio, and network grant to determine optimal RF chain allocation. This parameter-based approach allows dynamic adjustment of RF chain assignment to maximize throughput while managing complexity through systematic evaluation criteria.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus relating to intelligent resource assignment to increase throughput in LTE multiple input multiple output (MIMO) and carrier aggregation (CA) capable devices. In certain aspects, a MIMO and CA capable wireless communication device communicates with a base station (BS) on multiple component carriers (CCs) through multiple radio frequency (RF) chains. In such aspects, the device tentatively switches one or more first RF chains, not assigned to a first CC of the multiple CCs, to the first CC for evaluating a rank of the first CC. The device then determines that the first CC has a higher rank indication (RI) with the one or more RF chains. The device subsequently evaluates one or more performance factors, in conjunction with the higher rank, based on which the device then additionally assigns one or more second RF chains to the first CC.