PUCCH Format 0 Time-Domain Processing for Multi-UE Detection
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Solution Overview
Problem
Processing of PUCCH Format 0 (FMT0) signals in wireless communication systems becomes highly complex and resource-intensive when multiple user equipment (UEs) are multiplexed on the same communications resource, leading to excessive computing power consumption and time requirements.
Innovation Solution
Performing PUCCH FMT0 signal processing in the time domain, involving grouping UEs by payload type, applying an Inverse Discrete Fourier Transform (IDFT) to convert from frequency to time domain, calculating correlation power values, and extracting maximum correlation power for each UE to reduce complexity and resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PUCCH FMT0 signal processing is performed in the frequency domain with multiple UEs multiplexed on the same communications resource, then the number of correlations increases linearly with the number of UEs, but this leads to highly complex processing and excessive computing power consumption
Solution Approach 1:
The patent inverts the conventional frequency-domain processing approach by performing PUCCH FMT0 signal processing in the time domain instead. This inversion allows the network device to collect signals from multiple UEs and process them collectively through time-domain correlation, avoiding the linear increase in complexity that occurs when processing each UE separately in the frequency domain.
2Measurement precision
If PUCCH FMT0 signal processing is performed in the frequency domain, then each UE requires separate correlations, but this results in excessive time consumption and computing power requirements
Solution Approach 1:
The patent merges the processing of multiple UEs by collecting PUCCH FMT0 signals from all UEs in a group and performing collective time-domain correlation processing. This combining approach allows the network device to extract payloads from multiple UEs simultaneously through a unified processing framework, significantly reducing the total processing time compared to sequential frequency-domain processing of each UE individually.
3Productivity
If the number of multiplexed UEs increases on the same communications resource, then network capacity improves, but processing complexity and resource consumption become excessive
Solution Approach 1:
The patent creates a universal processing framework that handles PUCCH FMT0 signals from multiple UEs through a single time-domain correlation approach. The network device uses a common reference signal and performs correlation processing that simultaneously extracts payloads from all multiplexed UEs, making the processing system multi-functional and efficient regardless of the number of UEs, thus preventing computing power consumption from increasing linearly with network capacity.
Data Source
AI summary
A network device includes receiver and a processor. The receiver receives a signal from a group of terminal devices, over a physical uplink control channel (PUCCH) Format 0 (FMT0). The processor is coupled to the receiver, performs processing on the received signal to detect payloads corresponding to the terminal devices in the group, and utilizes the detected payloads for handling further communications with the terminal devices in the group. In the processing, the processor obtains a time domain sequence from the received signal by performing a transform from a frequency domain into a time domain, determines a plurality of correlation power values from the time domain sequence, and extracts, from the plurality of correlation power values, a maximum correlation power value corresponding to each terminal device among the terminal devices in the group.