Pilot Signal Transmission Resource Block Segmentation
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Solution Overview
Problem
In LTE and LTE-A systems, the existing pilot signal transmission methods face challenges in efficiently utilizing resource blocks, leading to interference and limitations in extending pilot ports due to the dense placement of common and dedicated demodulation pilot signals within the same resource blocks.
Innovation Solution
The method involves configuring dedicated demodulation pilot signals and common demodulation pilot signals on different resource blocks within a TTI, allowing for flexible resource allocation and reducing the number of pilot symbols, thereby facilitating the extension of pilot ports by optimizing the placement of pilot signals across different resource blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If common demodulation pilot signals and dedicated demodulation pilot signals are placed in the same resource blocks, then resource block utilization is achieved, but interference increases and pilot port extension is limited
Solution Approach 1:
The patent divides the resource block structure by separating common demodulation pilot signals and dedicated demodulation pilot signals into different resource blocks. This segmentation prevents their mutual interference while maintaining efficient resource utilization through structured allocation patterns.
2Productivity
If common demodulation pilot signals and dedicated demodulation pilot signals are placed in the same resource blocks, then resource block utilization is achieved, but pilot port extension is limited
Solution Approach 1:
By segmenting pilot signals into separate resource blocks, the patent creates independent allocation spaces that enable pilot port extension without disrupting existing resource block utilization patterns.
Solution Approach 2:
The patent introduces a new dimension of resource organization by allocating different pilot signal types to different resource blocks, thereby expanding the system's capability to support additional pilot ports while maintaining backward compatibility.
3Measurement precision
If pilot signals are densely placed in resource blocks, then channel estimation coverage is improved, but flexibility of frequency band usage is reduced
Solution Approach 1:
The patent applies local quality by allocating common and dedicated pilot signals to different resource blocks with specific allocation patterns, allowing dense placement for coverage while maintaining flexibility through configurable allocation rules that adapt to different frequency band requirements.
Data Source
AI summary
This application provides a pilot signal transmission method, a base station, and user equipment. A dedicated demodulation pilot signal and a common demodulation pilot signal in a TTI may be configured on different resource blocks of the TTI. The method in embodiments of the present invention includes: determining, by a base station, a resource location that is in a TTI and that is used to send a pilot signal, where the pilot signal includes a common demodulation pilot signal and a dedicated demodulation pilot signal, and the dedicated demodulation pilot signal and the common demodulation pilot signal are located on different resource blocks of the TTI; and sending, by the base station, the pilot signal at the resource location used to send the pilot signal.