RACH Failure Rate Feedback for 5G Cell Optimization
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Solution Overview
Problem
Current wireless communication networks, particularly in 5G systems, face challenges in efficiently managing Random Access Channel (RACH) procedures, leading to high failure rates due to factors like interference and suboptimal parameter settings.
Innovation Solution
The proposed solution involves an apparatus that determines the rate of failure for RACH attempts in its controlled cells and shares this information with a second apparatus. This apparatus also receives and aggregates RACH failure rates from other cells in the network, allowing for comparative analysis and potential adjustments to RACH configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RACH procedures are performed in wireless networks, then user equipment can connect to access nodes, but high failure rates occur due to interference and suboptimal parameter settings
Solution Approach 1:
The patent implements a feedback mechanism where RACH failure rate information is collected from multiple cells and fed back to the network controller. This feedback enables the system to identify problematic cells and adjust parameters accordingly, transforming the harmful interference issue into a manageable parameter optimization problem through continuous monitoring and adjustment
Solution Approach 2:
The patent directly addresses suboptimal parameter settings by implementing a system that measures, compares, and adjusts RACH parameters based on failure rate data. The network controller uses the aggregated failure rate information to modify RACH configuration parameters in affected cells, directly resolving the parameter optimization issue
2Productivity
If RACH failure rate information is collected and shared across multiple cells, then network performance can be optimized, but system complexity increases due to information exchange requirements
Solution Approach 1:
The patent creates a universal information exchange mechanism that serves multiple functions: collecting failure rate data, comparing performance across cells, identifying problematic areas, and triggering parameter adjustments. This multi-functional approach consolidates what could be multiple separate systems into a single integrated solution, reducing overall complexity
Solution Approach 2:
The network controller acts as an intermediary that centralizes the information exchange process. Rather than requiring direct communication between all cell components, the controller mediates the collection, aggregation, and distribution of RACH failure rate information, simplifying the information exchange architecture
Data Source
AI summary
An apparatus comprising means for performing: determining information comprising: a rate of failure for random access channel attempts in at least one cell controlled by the apparatus; and/or a number of successful random access channel attempts in the at least one cell controlled by the apparatus and a number of failed random access channel attempts in the at least one cell controlled by the apparatus; and sending the information from the apparatus to a second apparatus.