Reference Signal Transmit Power Configuration for 5G Channel Estimation
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Solution Overview
Problem
The existing methods for transmitting reference signals in MIMO technology are inflexible, leading to inefficient power utilization and reduced accuracy in channel estimation, which affects data transmission reliability in 5G systems.
Innovation Solution
A method to configure transmit power for reference signals more flexibly by allowing multiple pilot patterns and power boosting values, enabling power borrowing across multiple CDM groups, thereby optimizing power allocation and utilization across multiple ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single power boosting value is used for reference signal transmission, then the system is simple to implement, but power utilization is inefficient and channel estimation accuracy is reduced
Solution Approach 1:
The patent applies dynamics by making the power boosting value adjustable rather than fixed. The network device can dynamically select from multiple preconfigured power boosting values based on the actual number of active ports and service requirements, allowing the power allocation to adapt to changing system conditions and improve power utilization efficiency
Solution Approach 2:
The patent changes the parameter of power boosting value from a single fixed value to multiple configurable values. By preconfiguring at least three different power boosting values and selecting appropriate ones based on the number of active ports, the system achieves more flexible power allocation and better power utilization without excessive complexity
2Measurement precision
If a single power boosting value is used for reference signal transmission, then the configuration is simple, but channel estimation accuracy is reduced
Solution Approach 1:
The patent improves channel estimation accuracy by enabling changes in the power boosting parameter. By selecting from multiple preconfigured power boosting values based on the number of active ports, the system can allocate appropriate power to reference signals, thereby improving channel estimation accuracy without requiring complex real-time adjustments
Solution Approach 2:
The patent introduces dynamics into the power configuration by allowing the network device to adaptively select power boosting values according to the actual number of active ports. This dynamic adjustment ensures that reference signals receive appropriate power allocation, improving channel estimation accuracy while maintaining manageable system complexity
3Loss of energy
If power is allocated based on maximum ports, then power allocation is simplified, but power waste increases when fewer ports are active
Solution Approach 1:
The patent reduces power waste by changing the power allocation parameter from a fixed maximum-based value to a dynamic value selected from multiple preconfigured options. The network device determines the appropriate power boosting value based on the actual number of active ports, ensuring power is allocated according to actual needs rather than maximum capacity, thus reducing power waste
Solution Approach 2:
The patent applies dynamics by making power allocation adaptive to the actual number of active ports. Instead of always allocating power as if all maximum ports are active, the system dynamically adjusts the power boosting value based on the actual service requirements, reducing power waste while maintaining the ability to handle varying port configurations
Data Source
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AI summary
This application provides a reference signal sending and receiving method, a network device, and a terminal device, to improve power utilization, and improve accuracy of channel estimation. The method includes: determining, by a network device, a transmit power used to transmit a reference signal, where the transmit power is related to a quantity of ports carried on an RE occupied by the reference signal; and sending, by the network device, the reference signal based on the transmit power.