Antenna Combiner RACH Detection via SINR Selection
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Solution Overview
Problem
Current wireless communication systems face high probabilities of misdetecting network access requests due to the detection of peaks in combined signals from multiple antennas, leading to inefficient Random Access Channel (RACH) detection.
Innovation Solution
The implementation of an antenna combiner that determines the Signal to Interference plus Noise Ratio (SINR) for each received signal from multiple antennas, selects the RACH sequence with the maximum SINR, and sends it to a peak search device for analysis, improving the detection of valid network access requests by using a linear combination method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single antenna receiver performs frequency domain correlation and linear combination of received signals from multiple antennas, then the system can process multiple antenna inputs, but the probability of misdetection of network access requests increases
Solution Approach 1:
The patent divides the detection process into separate processing paths for each antenna. Instead of combining signals first and then detecting, the system performs frequency domain correlation separately for each antenna's received signal, generating individual sets of correlation values that are then processed independently before final combination. This segmentation prevents interference and misdetection issues that arise from premature signal combination.
2Device complexity
If the system performs linear combination of received signals from multiple antennas to produce a uniform combined signal, then signal processing is simplified, but detection precision of valid RACH sequences decreases
Solution Approach 1:
The patent applies preliminary frequency domain correlation processing to each antenna's received signal before combination. By performing the correlation operation in advance for each antenna separately, the system prepares the signals in a form that maintains their individual characteristics and detection accuracy. This preliminary action ensures that when signals are later combined, the detection precision is preserved while still achieving processing efficiency.
Data Source
AI summary
A method including receiving, by an antenna combiner of a wireless communication system, a set of Random Access Channel (RACH) sequences of a first RACH signal from a first antenna and a set of RACH sequences of a second RACH signal from a second antenna. The method further including selecting, by the antenna combiner, each RACH sequence of the set of RACH sequences of a selected RACH signal from a selected antenna that has a best Signal to Interference plus Noise Ratio (SINR) from each RACH sequence of the set of RACH sequences of the first RACH signal from the first antenna that has a first SINR and each RACH sequence of the set of RACH sequences of the second RACH signal from the second antenna that has a second SINR.