QoS Profile Adaptation in 5G Handover Signaling
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Solution Overview
Problem
Current communication systems, particularly in 5G networks, face challenges in ensuring quality of service (QoS) due to radio resource shortages and changing channel conditions, leading to uncertainties in handling requested QoS profiles during handovers and resource allocation.
Innovation Solution
Implementing a method where a radio access node receives a requested QoS profile and alternative profiles, determines the feasibility of each, and temporarily switches to an alternative profile if the requested one cannot be met, allowing for efficient communication by configuring the user equipment with parameters based on the available alternative QoS, thereby reducing signaling and enabling faster recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the requested QoS profile is strictly enforced during handover, then service quality is maintained, but communication continuity is disrupted when resources are insufficient
Solution Approach 1:
The patent implements dynamic QoS profile selection by allowing the source base station to identify and switch to alternative QoS profiles when the requested profile cannot be satisfied. This dynamic adaptation enables the system to maintain communication continuity by adjusting QoS parameters in real-time based on available resources, resolving the contradiction between strict QoS enforcement and communication continuity.
Solution Approach 2:
The patent changes QoS parameters by providing multiple alternative QoS profiles with different parameter sets (e.g., different bit rates, latency requirements). When the requested QoS profile cannot be met, the system selects an alternative profile with adjusted parameters that are feasible given current resource conditions, thereby maintaining communication while adapting to resource constraints.
2Productivity
If alternative QoS profiles are implemented and switching is enabled, then communication continuity is maintained, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple alternative QoS profiles in the source base station before handover occurs. The source base station identifies suitable alternative profiles and prepares the switching mechanism in advance, which simplifies the actual handover process and reduces the complexity of real-time QoS management during critical handover moments.
Solution Approach 2:
The source base station acts as an intermediary that manages the QoS profile selection and switching logic. By centralizing the alternative QoS profile management in the source base station and providing indication information to the target base station, the system avoids distributing complex QoS management logic across multiple nodes, thereby controlling system complexity while maintaining communication continuity.
3Measurement precision
If frequent QoS reconfigurations are performed to adapt to changing conditions, then QoS management accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by providing indication information about alternative QoS profiles only when necessary - specifically when the requested QoS profile cannot be satisfied or when switching from a lower to higher QoS profile is possible. This selective signaling approach maintains QoS adaptation accuracy by providing relevant information only when needed, thereby reducing unnecessary signaling overhead.
Data Source
AI summary
There is provided a method at a first network node, comprising: receiving, from a second network node, a message comprising a requested quality of service (QoS) profile and one or more alternative QoS profiles, wherein the QoS profiles are associated with a communication with a user equipment; determining that the requested QoS profile cannot be provided by the first network node for a communication between the first network node and the user equipment; determining that at least one of the one or more alternative QoS profiles can be provided by the first network node for a communication between the first network node and the user equipment; transmitting, to the second network node, an indication that an alternative QoS profile can be provided by the first network node; and, transmitting, to the second network node, an indication for configuring the user equipment based on the requested QoS profile.