Dynamic MIMO Layer Configuration Per Bandwidth Part
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in efficiently managing bandwidth parts (BWP) to minimize latency and maximize data transmission efficiency due to limited radio resources, which is critical for applications requiring low latency and high reliability.
Innovation Solution
A method and apparatus for a user equipment (UE) in a multi-input multi-output (MIMO) communication system that receives and switches between multiple MIMO layer configurations per BWP, adapting to different BWP configurations for downlink and uplink transmissions based on requests, allowing dynamic adjustment of MIMO layers to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple MIMO layer configurations are maintained per bandwidth part, then adaptability to different transmission scenarios is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic MIMO layer configuration by allowing the UE to switch between different MIMO layer configurations based on received MAC CE indications. The system transitions from static configuration to dynamic adaptation, where the active MIMO layer configuration can change over time based on transmission requirements, thereby improving adaptability without permanently increasing hardware complexity
Solution Approach 2:
The patent creates multiple MIMO layer configurations (first, second, third configurations) that can be universally applied across different bandwidth parts and transmission scenarios. Each configuration serves multiple purposes: downlink reception, uplink transmission, and can be switched based on BWP changes, providing universal functionality that improves adaptability while sharing the same physical hardware resources
2Productivity
If dynamic switching between MIMO layer configurations is implemented, then transmission efficiency is improved, but processing overhead increases
Solution Approach 1:
The patent changes the MIMO layer configuration parameters dynamically by receiving MAC CE indications that specify which MIMO layer configuration to activate. Instead of changing physical hardware parameters, the system changes logical configuration parameters (first, second, or third MIMO layer configuration), thereby improving transmission efficiency through software-controlled parameter adjustment rather than hardware reconfiguration
Solution Approach 2:
The patent performs preliminary configuration by pre-establishing multiple MIMO layer configurations (first, second, and third configurations) before actual transmission occurs. When transmission needs to adapt to different scenarios, the system simply switches between pre-configured options rather than creating new configurations in real-time, reducing processing overhead during active transmission
Data Source
AI summary
A method for transmitting signals by a user equipment (UE) in a multi input multi output (MIMO) communication system is disclosed. The method comprises steps of receiving two or more MIMO layer configurations per bandwidth part (BWP); receiving a medium access control (MAC) control element (CE) indicating a first MIMO layer configuration for a downlink reception via a first BWP and a second MIMO layer configuration for an uplink transmission via a second BWP among the two or more MIMO layer configurations; and transmitting and receiving signals based on the first and second MIMO layer configurations.