Antenna combining for physical random access channel (PRACH)
AssigneeRadisys Corporation
InventorsRahul Joon, Gaurab Basu, Saptarshi Chaudhuri
Life of this patent
Estimating the term…
Abstract
The disclosed system and method address the challenge of antenna streams that are compromised and unable to provide accurate PRACH data due to a spectrum of issues, including but not limited to broken antennas. These issues may range from loose connections and damaged antenna elements to open Radio Unit (O-RU) anomalies in open RAN systems, poor channel conditions, or human error. By tackling these problems, the proposed solution significantly improves the probability of detecting the preamble and enhances the robustness of the system, ensuring more dependable PRACH data acquisition and processing.
Claims18
A method of antenna combining in a PRACH receiver so as to increase PRACH detection, the method comprising:
- detecting an RF anomaly based on a peak to average power ratio for each receive antenna;
- determining a weight factor for each receive antenna and a composite scaling value;
- in response to detection of the RF anomaly, generating a processed PRACH stream from each receive antenna, in which each processed PRACH stream is graded according to its associated weight factor and the composite scaling value;
- and
- determining a combined PRACH signal based on each processed PRACH stream such that the RF anomaly is suppressed by the associated weight factor that is lower than that of a non-anomalous PRACH signal.
A non-transitory computer-readable medium storing instructions for antenna combining in a PRACH receiver so as to increase PRACH detection, the instructions, when executed by an O-DU for a 5G communication system, configure the O-DU to:
- detect an RF anomaly based on a peak to average power ratio for each receive antenna;
- determine a weight factor for each receive antenna and a composite scaling value;
- in response to detection of the RF anomaly, generate a processed PRACH stream from each receive antenna, in which each processed PRACH stream is graded according to its associated weight factor and the composite scaling value;
- and
- determine a combined PRACH signal based on each processed PRACH stream such that the RF anomaly is suppressed by the associated weight factor that is lower than that of a non-anomalous PRACH signal.
Dependencies are inferred from the claim text.