Network Node Admittance Control Based on QoS Failure Reason
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Solution Overview
Problem
Current admission control methods in wireless communication systems struggle to accurately differentiate between quality of service (QoS) failures due to coverage issues and congestion, leading to inefficient resource allocation and unnecessary rejections of radio access bearer requests.
Innovation Solution
Implementing a method in network nodes to monitor and assess the reason for QoS failures, distinguishing between coverage limitations and congestion, and adjusting admission control decisions accordingly, such as temporarily barring users with coverage issues and proactively blocking requests for congested QoS classes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If admission control rejects all QoS failure requests without differentiation, then resource allocation simplicity is maintained, but resource utilization efficiency deteriorates due to unnecessary rejections
Solution Approach 1:
The patent segments QoS failures into two distinct categories: coverage-related failures and congestion-related failures. This segmentation enables differentiated admission control strategies - temporarily barring users with coverage issues while accepting requests for congested QoS classes, thereby improving resource utilization without excessive complexity
Solution Approach 2:
The patent implements preliminary action by proactively blocking requests for congested QoS classes before resources are fully exhausted, and by temporarily barring users experiencing coverage issues. This preventive approach optimizes resource allocation before failures occur, improving productivity while maintaining manageable control complexity
2Reliability
If admission control admits all requests without assessing QoS failure reasons, then ease of operation is maintained, but system reliability deteriorates due to pointless admissions
Solution Approach 1:
The patent employs feedback mechanisms by monitoring QoS failure reasons and using this information to adjust admission control decisions. The system continuously assesses whether failures are due to coverage or congestion, and adapts its admission strategy accordingly, improving reliability while maintaining operational simplicity through automated feedback loops
3Measurement precision
If the system monitors and differentiates QoS failure reasons, then resource allocation accuracy is improved, but measurement and detection difficulty increases
Solution Approach 1:
The patent applies parameter changes by monitoring specific QoS parameters (throughput, delay, error rates) and comparing them against thresholds to determine failure reasons. This systematic parameter-based approach enables accurate differentiation between coverage and congestion failures while keeping detection and measurement processes manageable through standardized metrics
Data Source
AI summary
Network node (110) and method (600) in a network node (110), for admission control of a request for a radio access bearer to be received from a user equipment (120). The method (600) comprises monitoring (601) the achievement of quality of service requirement of an admitted radio access bearer, detecting (602) when the quality of service requirement of the admitted radio access bearer is not achieved, assessing (603) a reason why the quality of service of the admitted radio access bearer is not achieved, and determining (604) admittance of a further request for radio access bearer, based on the reason why the quality of service of the admitted radio access bearer is not achieved.