Port-Specific SRS Power Calculation for Accurate MIMO Port Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in accurately managing uplink port selection in MIMO operations due to varying antenna port characteristics, leading to potential performance downgrades when equal sounding reference signals are used across different antenna ports.
Innovation Solution
Implementing port specific power calculation techniques for determining and applying different transmit powers for different antenna ports in a wireless device, specifically using the sounding reference signal, to enhance the accuracy of antenna port selection in MIMO operation, by configuring the wireless device to solve the wireless device, specifically using the sounding reference signal transmit power calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If equal sounding reference signal transmit power is used for different antenna ports, then the system operation is simplified, but the antenna port selection accuracy deteriorates
Solution Approach 1:
The patent applies local quality by assigning different transmit power levels to different antenna ports based on their specific characteristics. Each antenna port is evaluated individually, and the sounding reference signal transmit power is adjusted locally for each port rather than using a uniform power level across all ports. This enables accurate representation of each antenna port's potential performance while maintaining systematic control.
2Measurement precision
If port specific power calculation is implemented, then the antenna port selection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting the sounding reference signal transmit power parameter for each antenna port based on calculated characteristics. The system changes the power parameter from a fixed equal value to variable port-specific values, enabling accurate performance representation. This parameter adaptation is performed through systematic calculations that account for antenna port characteristics without requiring complex hardware modifications.
Data Source
AI summary
This disclosure relates to techniques for performing uplink port selection management in a wireless communication system. A sounding reference signal transmit power calculation method may be selected by a wireless device from multiple possible methods, potentially based on a number of uplink multiple input multiple output transmission layers configured for the wireless device. Sounding reference signal transmit powers for a first antenna port and a second antenna port may be determined using the selected sounding reference signal transmit power calculation method. Sounding reference signals may be transmitted using the first antenna port and the second antenna port at the determined sounding reference signal transmit powers.