Multi-QoS Session Profile Switching During Wireless Handover
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing multiple Quality of Service (QoS) profiles during changes in network conditions or handovers, leading to suboptimal QoS provisioning.
Innovation Solution
The system dynamically selects a new QoS profile from a set of associated profiles based on network conditions or handover events, ensuring optimal QoS by replacing the current profile with a more suitable one.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single QoS profile is used for a session, then the configuration is simple and stable, but the system cannot adapt to changing network conditions or handover scenarios
Solution Approach 1:
The system dynamically selects QoS profiles from multiple available profiles based on current network conditions and handover scenarios. The QoS profile is no longer static but changes adaptively according to network state, resolving the contradiction between simplicity and adaptability by introducing controlled dynamic behavior through event-triggered profile selection
Solution Approach 2:
The system changes the QoS profile parameters (such as QoS flow ID, 5QI, ARP, GBR, MBR) based on network conditions and handover events. By allowing parameter changes through multiple QoS profiles associated with a session, the system achieves adaptability while managing complexity through structured parameter sets defined in the QoS profile collection
2Adaptability or versatility
If multiple QoS profiles are associated with a session, then the system can adapt to different network conditions, but the complexity of managing and selecting profiles increases
Solution Approach 1:
The system performs preliminary actions by pre-associating multiple QoS profiles with the session before handover or network condition changes occur. The QoS profile collection is established in advance, and the network device is pre-configured with multiple profiles, enabling rapid selection during events without complex real-time decision-making, thus improving ease of operation during critical moments
Solution Approach 2:
The system uses feedback mechanisms where the network device monitors network conditions and handover events, then selects the appropriate QoS profile from the associated collection based on this feedback. This closed-loop approach simplifies operation by automatically responding to network state changes without manual intervention, resolving the contradiction between adaptability and ease of operation
3Reliability
If QoS profile changes during handover, then service quality is maintained, but the handover process becomes more complex
Solution Approach 1:
The system performs preliminary actions by pre-configuring multiple QoS profiles with the session before handover occurs. The target network device receives information about the QoS profile collection in advance through the handover request message, enabling it to select an appropriate profile during handover without complex real-time negotiations, thus maintaining reliability while managing complexity
Solution Approach 2:
The network device acts as an intermediary that manages the QoS profile selection during handover. It receives the QoS profile collection from the source device, evaluates network conditions, and selects the appropriate profile for the target session. This intermediary role simplifies the handover process by centralizing the QoS management function, resolving the contradiction between reliability and complexity
Data Source
AI summary
A wireless communication system includes one or more base stations, and one or more user devices, UEs. When running a certain application, the UE is to communicate over a session, like a PDU session, the session having associated therewith a current Quality of Service, QoS, profile, the current QoS profile selected form a plurality of different QoS profiles associated with the session. In case of a certain event, the wireless communication system is to replace the current QoS profile for the session by a new QoS profile for the session, the new QoS profile selected from a subset or all of the plurality of different QoS profiles associated with the session and/or one or more QoS profiles not yet associated with the session.