PUCCH Precoding Across Multiple Antennas for Reliable Uplink Control
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Solution Overview
Problem
Existing 5G communication systems face challenges in efficiently transmitting physical uplink control channel (PUCCH) signals due to the lack of methods for utilizing multiple antennas, leading to potential reliability issues and reduced transmission diversity.
Innovation Solution
An electronic device equipped with multiple antennas generates a precoded PUCCH signal by obtaining precoding information, generating a PUCCH precoding vector, and transmitting the signal using a plurality of antennas, either through shared codebooks or channel-based calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used for PUCCH signal transmission, then transmission diversity and signal reliability are improved, but the system lacks an effective precoding method which limits performance
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting precoding vectors based on channel conditions and antenna configurations. The base station configures precoding parameters including codebook indices and transformation precoding matrices, allowing the system to adapt to different signal-to-noise ratios and antenna setups while maintaining reliable PUCCH transmission
Solution Approach 2:
The patent introduces precoding vectors as an intermediary between the PUCCH signal and the multiple antennas. These precoding vectors act as a mediator that transforms the original signal into a form suitable for transmission through the antenna array, enabling transmission diversity without directly modifying the antenna hardware or signal structure
2Productivity
If precoding is implemented for PUCCH signals, then spectral efficiency is improved, but the processing complexity increases
Solution Approach 1:
The patent segments the precoding process into distinct components: codebook-based precoding vectors and transformation precoding matrices. This segmentation allows the system to apply different precoding strategies for different signal components, improving spectral efficiency by optimizing each segment independently while managing overall processing complexity through modular design
Solution Approach 2:
The base station performs preliminary configuration of precoding parameters before actual PUCCH transmission. By pre-configuring codebook indices and transformation matrices based on channel conditions, the system prepares the precoding structure in advance, reducing real-time processing complexity while maintaining high spectral efficiency during actual transmission
Data Source
AI summary
Provided is an operation method of an electronic device including a plurality of antennas, the operation method including obtaining precoding information from a base station, generating a physical uplink control channel (PUCCH) precoding vector based on the precoding information, generating a precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and transmitting the precoded PUCCH signal to the base station by using the plurality of antennas.