UE Path Selection Policy Updates for Changing Network Conditions
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Solution Overview
Problem
Existing path selection policies in wireless communication networks are static and fail to adapt quickly to dynamically changing radio and network conditions, leading to sub-optimal path selection and adverse impacts on Quality of Service (QoS) and network performance.
Innovation Solution
A network entity dynamically updates the path selection policy for user equipment (UE) by detecting triggering events based on data related to available communication paths, considering radio and network conditions, and selecting an alternative path to support the communication service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static path selection policies are used, then device complexity is reduced and ease of operation is improved, but adaptability to changing radio and network conditions deteriorates
Solution Approach 1:
The path selection policy is transformed from a static configuration to a dynamic one by introducing triggering events that automatically initiate policy updates when specific conditions are met. The network entity monitors radio conditions, network conditions, and service requirements, and triggers policy updates dynamically without requiring manual intervention or complex decision-making processes.
Solution Approach 2:
A feedback mechanism is established where the network entity continuously monitors triggering events related to radio conditions, network conditions, and service requirements. This feedback loop enables the system to detect when path selection policy updates are needed and automatically initiate the update process, improving adaptability while maintaining operational simplicity.
2Reliability
If static path selection policies are used, then device complexity is reduced, but Quality of Service deteriorates due to sub-optimal path selection
Solution Approach 1:
The network entity pre-configures multiple communication paths and establishes triggering events that will initiate path selection policy updates when specific conditions occur. This preliminary preparation allows the system to quickly switch to optimal paths when needed, improving QoS without requiring complex real-time decision-making at the UE level.
Solution Approach 2:
The network entity acts as an intermediary that manages the complexity of path selection policy updates. Instead of requiring the UE to independently analyze and select optimal paths (which would increase device complexity), the network entity monitors conditions and provides updated policies to the UE, maintaining simplicity at the device level while improving overall QoS.
3Adaptability or versatility
If dynamic path selection is implemented, then adaptability to changing conditions is improved, but response time to detect and implement changes increases
Solution Approach 1:
The system implements periodic monitoring of triggering events at the network entity, checking for conditions that would require path selection policy updates. This periodic action ensures that the system remains adaptable to changing conditions while using efficient monitoring intervals that prevent excessive updates and minimize time loss.
Solution Approach 2:
The path selection policy is updated by changing specific parameters such as path preferences, priority levels, and selection criteria based on triggering events. This parameter-based update approach allows for rapid policy modifications without requiring complete policy reconfiguration, reducing the time needed to adapt to changing conditions.
Data Source
AI summary
The present disclosure relates generally to the field of wireless communications, and particularly to a procedure for dynamically updating a path selection policy for a UE in a wireless communication network. According to this procedure, a network entity detects a need to update the path selection policy based on data relating to a first communication path currently used in accordance with the path selection policy and at least one other communication path available in a wireless communication network. The data may comprise RRM measurements, Radio Channel measurements, QoS parameters, their statistics or predictions, and UE notifications of a success rate of the path selection policy. By using the data, the network entity dynamically updates the path selection policy by selecting, among the at least one other communication path, a second communication path to be used to support the communication service instead of the first communication path.