Block Reference Signal Power Allocation for Channel Estimation
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Solution Overview
Problem
Existing communication systems face performance degradation due to the lack of consideration for channel variations between different input delay resources, leading to deteriorated reception performance as Doppler frequency increases, especially in high mobility scenarios like 6G communication.
Innovation Solution
A method and apparatus for channel estimation in a communication system that configures a block reference signal with varying power levels across resources in a two-dimensional domain, allowing for accurate channel estimation and equalization across different input delay resources, using a processor to demodulate and estimate channels for resources with a first reference signal at a higher power level and second reference signals at a lower power level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing channel estimation techniques are used without considering channel variation between different input delay resources, then the system structure remains simple, but channel estimation accuracy deteriorates as Doppler frequency increases
Solution Approach 1:
The patent applies local quality by configuring different power levels for reference signals at different locations within the same block. Specifically, first reference signals at first power levels and second reference signals at second power levels are allocated to different resources in the two-dimensional domain, allowing the channel estimation to account for local channel variations between different input delay resources while maintaining a unified block structure.
2Measurement precision
If reference signals are allocated to all resources uniformly, then channel coverage is complete, but estimation precision for resources with different channel characteristics is insufficient
Solution Approach 1:
The patent implements local quality by differentiating reference signal power levels based on resource location. First reference signals at higher power levels are allocated to certain resources while second reference signals at lower power levels are allocated to other resources, enabling precise channel estimation for resources with different channel characteristics without requiring uniform reference signal density across all resources.
3Device complexity
If block reference signal structure is used, then processing complexity is reduced, but channel variation between different input delay resources cannot be captured
Solution Approach 1:
The patent resolves this contradiction by incorporating local quality variations within the block reference signal structure. Different power levels are assigned to different reference signals within the same block based on their resource locations, enabling the simplified block processing approach to simultaneously capture channel variations between different input delay resources and maintain high reception performance.
Data Source
AI summary
A method of a terminal, for channel estimation in a communication system, may comprise: receiving configuration information of a block reference signal from a base station; receiving a modulated data channel including the block reference signal according to the configuration information; and demodulating the block reference signal in the received data channel to estimate a channel for resources in a two-dimensional domain, to which the block reference signal is allocated.