Admission Control Node for Measurement Interference in Communication Networks
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Solution Overview
Problem
Large-scale communication network measurements often interfere with each other, leading to congestion and inaccurate results, and existing admission control methods are restrictive, computationally intensive, and require centralized scheduling with complex deployment updates.
Innovation Solution
An Admission Control Node that determines the current measurement situation along a path between devices and decides whether to allow or reject measurement requests, reducing interference and congestion by informing devices of decision outcomes, allowing multiple simultaneous low-overhead measurements without complex scheduling requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple simultaneous measurements are performed in a large-scale communication network, then measurement coverage and productivity are improved, but measurement interference and congestion increase leading to reduced measurement precision
Solution Approach 1:
The patent applies preliminary action by performing admission control before measurements are executed. The system evaluates measurement requests against current network conditions and existing measurement schedules, deciding whether to admit new measurements before they start. This prevents measurement interference and congestion from occurring in the first place, maintaining measurement precision while enabling multiple simultaneous measurements through proactive resource management.
2Loss of time
If earliest deadline first scheduling is used to optimize measurement schedules, then measurement timing is improved, but computational overhead increases significantly due to recalculation requirements
Solution Approach 1:
The patent introduces an intermediary admission control entity that mediates between measurement requests and network resources. Instead of requiring complex recalculation of schedules when nodes are added or removed, the intermediary evaluates new requests against the current schedule and makes admission decisions based on predefined criteria and available capacity. This approach maintains good measurement timing while avoiding the significant computational overhead of continuous EDF recalculation.
3Reliability
If centralized scheduling is implemented to control measurements, then measurement coordination is improved, but deployment complexity and update requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the centralized scheduling function into distributed admission control entities that operate autonomously at different network locations. Each entity manages local measurement admission decisions based on information from neighboring entities, eliminating the need for a single centralized controller. This maintains reliable measurement coordination through distributed consensus while significantly reducing deployment complexity and eliminating the need for updates across all measurement nodes.
Data Source
AI summary
An Admission Control Node and a method performed thereby for enabling a measurement between a first and a second device in a communication network, and a first device and a method performed thereby for performing the measurement between the first device and the second device in a communication network are provided. The method in the Admission Control Node comprises receiving, from the first device, a request for performing the measurement between the first and the second device and, determining segments comprised in a path between the first and the second device. The method also comprises determining a current measurement situation for the segments, and deciding to allow or reject the request for performing the measurement based on the current measurement situation for the segments. The method further comprises informing the first device about the decision of allowing or rejecting the request for performing the measurement.