RU Packet Statistics Alarms for O-RAN Fault Detection
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Solution Overview
Problem
Existing technologies do not provide a specific method for utilizing statistical information generated by O-RU and O-DU apparatuses in a radio access network, limiting effective management and fault detection in separated base station functions.
Innovation Solution
The RU and DU apparatuses are equipped with reception and transmission units to generate and transmit alarm signals based on predetermined criteria related to statistical information, allowing for efficient utilization and management of packet data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If base station functions are separated into RU and DU apparatuses, then adaptability and network flexibility are improved, but device complexity and management difficulty increase
Solution Approach 1:
The base station functions are segmented into RU (Radio Unit) and DU (Distributed Unit) apparatuses, with each handling specific layers of the communication protocol. The RU executes physical layer processing while the DU handles higher-layer processing, allowing independent optimization and deployment of each component.
Solution Approach 2:
The patent implements a feedback mechanism where statistical information about packets received at the RU is monitored and compared against predetermined criteria. When abnormalities are detected (such as packet loss exceeding thresholds), alarm signals are automatically generated and transmitted to the DU or management apparatus, enabling proactive fault detection and response.
2Reliability
If statistical information monitoring is implemented, then fault detection capability is improved, but administrative management load increases
Solution Approach 1:
The RU apparatus autonomously monitors its own received packets, generates statistical information, and automatically detects faults by comparing statistics against predetermined criteria. This self-service capability eliminates the need for manual monitoring and reduces administrative management load while maintaining high fault detection capability.
Solution Approach 2:
The system implements automatic feedback loops where the RU continuously monitors packet statistics, compares them against thresholds, and triggers alarm signals when abnormalities are detected. This automated feedback mechanism replaces manual monitoring processes, significantly reducing administrative burden while improving reliability through continuous surveillance.
3Productivity
If automatic alarm signal transmission is implemented, then productivity and response time are improved, but device complexity increases
Solution Approach 1:
The patent establishes predetermined criteria and thresholds for packet statistics before operation begins. These criteria define what constitutes an abnormal condition (such as packet loss rates exceeding specific thresholds). By pre-configuring these parameters, the system can immediately detect and respond to faults without requiring complex real-time analysis algorithms, thus improving response time while limiting the increase in device complexity.
Data Source
AI summary
An object of the present disclosure is to provide a remote unit (RU) apparatus that can effectively utilize statistical information of packets generated in a RU apparatus and a distributed unit (DU) apparatus that execute separated functions in a base station. A RU apparatus (10) according to the present disclosure includes: a reception unit (11) that receives a packet from a DU apparatus (20) that executes processing of a higher-level layer than a layer to be executed by the RU apparatus (10) among communication functions of a base station that are divided into a plurality of layers; and a transmission unit (12) that transmits an alarm signal to the DU apparatus (20) or a management apparatus that manages a network when statistical information regarding the received packet satisfies a predetermined criterion.