Mobile Radio Network Verification via Three-Way Handshake
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Solution Overview
Problem
Current self-organizing network (SON) techniques in mobile radio communication networks have limitations in verifying operational changes due to a limited view of individual eNodeBs, leading to challenges in identifying and resolving verification collisions and optimizing network performance.
Innovation Solution
A method involving a three-way handshake between network entities to manage undo requests, categorize cells, and calculate optimal time slots for resolving collisions, using graph coloring theory and constraint satisfaction methods to identify safe and conflicting undo areas, and employing a SON coordinator to block interfering reconfiguration tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If SON techniques are implemented only at the eNodeB level, then each eNodeB can independently perform self-configuration and self-optimization, but the eNodeB has a limited view of the entire network and cannot verify operational changes effectively
Solution Approach 1:
The patent introduces a verification entity as an intermediary component that receives operational parameter changes from SON functions, determines verification areas, and coordinates verification processes. This intermediary enables individual eNodeBs to maintain their autonomous SON capabilities while providing network-wide verification through a centralized coordination mechanism, thus resolving the contradiction between local automation and global information availability.
2Reliability
If multiple verification areas share cells showing anomalous behavior, then comprehensive network monitoring is achieved, but verification collisions occur and it cannot be determined which CM changes caused the degradation
Solution Approach 1:
The patent segments the verification process into distinct phases: determining verification areas, identifying anomalous behavior, and resolving verification collisions through iterative undo requests. When verification collisions occur, the system divides the problem into manageable steps by performing multiple iterative undo requests, each targeting specific configuration changes, until the root cause is isolated and resolved.
Solution Approach 2:
The patent implements preliminary actions by determining verification areas and identifying potential verification collisions before executing configuration changes. The verification entity proactively analyzes the network state, identifies cells that may show anomalous behavior, and prepares verification plans in advance, preventing verification collisions from causing system-wide issues.
3Measurement precision
If iterative undo requests are performed to resolve verification collisions, then the root cause of network degradation can be identified, but the verification process time increases
Solution Approach 1:
The patent implements a feedback mechanism where the verification entity continuously monitors network performance during iterative undo requests. After each undo operation, the system evaluates whether the anomalous behavior is resolved and uses this feedback to determine the next verification area or configuration change to test. This feedback-driven approach systematically narrows down the root cause while minimizing unnecessary verification steps, balancing precision with time efficiency.
Data Source
AI summary
A method for verifying an operation of a mobile radio communication network is provided, wherein the method comprises sending an Initiation Message from a first network entity to a second network entity, the Initiation Message defining an undo request and comprising an UNDO section defining an undo area, a TRIGGERING_CM section indicating changes to the network, and an ASSISTANCE section; receiving an Assistance-Response Message, the Assistance-Response Message comprising the UNDO section, and an ASSISTED_CM section; and sending an Assistance-Acknowledge Message including an ACK flag and the UNDO section from the first network entity to the second network entity.