Uplink MIMO Panel Activation via Feedback Control
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Solution Overview
Problem
In wireless communication systems, managing multiple antenna panels for efficient uplink multi-in multi-out (MIMO) transmission is challenging, as existing technologies lack efficient methods for panel activation and deactivation, leading to suboptimal performance and power management.
Innovation Solution
The system allows for the activation and deactivation of antenna panels based on reported feedback, with either the gNodeB or the WTRU determining which panels to use, enabling dynamic panel selection and configuration to optimize transmission and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna panels are activated for uplink MIMO transmission, then transmission efficiency and throughput are improved, but power consumption and device complexity increase
Solution Approach 1:
The patent implements dynamic panel activation and deactivation based on real-time feedback. The WTRU monitors channel conditions and transmission requirements, activating additional panels when high throughput is needed and deactivating panels when transmission requirements are met or conditions deteriorate. This dynamic adjustment optimizes the balance between transmission efficiency and power consumption.
Solution Approach 2:
The system changes operational parameters by adjusting the number of active panels based on feedback metrics such as channel quality, interference levels, and power headroom. The gNB configures different panel activation states corresponding to different transmission scenarios, allowing the system to adapt power consumption and transmission performance to current conditions.
2Productivity
If multiple antenna panels are activated for uplink MIMO transmission, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the WTRU reports channel measurements, panel performance metrics, and transmission status to the gNB. Based on this feedback, the gNB makes informed decisions about panel activation and configuration. This feedback-driven approach simplifies management by using objective metrics rather than complex manual configuration.
Solution Approach 2:
The WTRU autonomously performs panel selection and configuration based on pre-configured criteria and feedback from channel measurements. The device self-manages panel activation/deactivation according to transmission requirements and power conditions, reducing the need for complex network-side control and simplifying overall system management.
3Productivity
If panel configuration is optimized for transmission performance, then uplink throughput is improved, but Maximum Permissible Emission impacts increase
Solution Approach 1:
The system adjusts transmission parameters including panel activation state, power allocation per panel, and modulation schemes based on power headroom reports and MPE constraints. When MPE limits are approached, the system transitions to configurations with fewer active panels or reduced power levels, maintaining throughput within permissible emission limits.
Data Source
AI summary
Systems, methods, and devices for panel activation and/or deactivation for uplink multi-in multi-out (MIMO) transmission are disclosed. A device, such as a wireless transmit receive unit (WTRU) may have one or more antennal panels. Each panel may have an identifier (ID). Based on reported feedback that includes measurement information, one or more panels may be activated or deactivated. In some embodiments, a gNB may determine whether to activate or deactivate a panel. In other embodiments, a WTRU may determine to activate or deactivate a panel.