Uplink MIMO Antenna Port Swapping for Accurate Power Selection
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately selecting antenna ports for uplink MIMO operations, leading to potential performance downgrades due to differing maximum transmit power levels among antenna ports, which can strain battery life and reduce signal accuracy.
Innovation Solution
Implementing port-specific sounding reference signal transmit power calculation and antenna port swapping techniques based on device-specific characteristics and dynamic conditions to optimize antenna port selection for better performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If equal sounding reference signal transmit power is used for different antenna ports, then device complexity is reduced, but measurement precision deteriorates due to inaccurate representation of antenna port performance
Solution Approach 1:
The patent applies local quality by transitioning from uniform power allocation to port-specific power calculation. Each antenna port is assigned a customized sounding reference signal transmit power based on its individual characteristics (maximum transmit power levels, channel conditions), allowing accurate performance evaluation of each port while maintaining manageable device complexity through standardized calculation procedures.
2Measurement precision
If antenna port swapping is performed based on device-specific characteristics, then signal accuracy is improved, but device complexity increases due to autonomous port selection mechanisms
Solution Approach 1:
The patent implements self-service through autonomous antenna port swapping. The wireless device independently evaluates its own antenna port performance using port-specific sounding reference signal measurements and automatically selects the optimal port for uplink MIMO transmission without requiring network intervention or complex coordination mechanisms, thereby improving signal accuracy while keeping the selection mechanism relatively simple.
3Measurement precision
If port-specific sounding reference signal transmit power calculation is implemented, then measurement precision is improved, but use of energy increases due to additional power management operations
Solution Approach 1:
The patent applies preliminary action by calculating and configuring port-specific sounding reference signal transmit powers in advance during uplink MIMO operation setup. This preliminary configuration enables accurate antenna port performance measurement without requiring continuous power adjustments during transmission, thereby improving measurement precision while minimizing additional energy consumption during actual data transmission phases.
Data Source
AI summary
This disclosure relates to techniques for performing uplink port selection management in a wireless communication system. Information configuring a first antenna port for uplink communication may be received by a wireless device. The wireless device may determine to swap antenna ports for the uplink communication, and may perform the uplink communication using the swapped antenna ports.