Connected-State Mobility Handover with Active-Service Target Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In service-based wireless systems like 6G networks, handover procedures between network entities disrupt ongoing communications between user equipment (UE) and active core network services, leading to service disruptions.
Innovation Solution
A UE and/or source network entity identifies a trigger condition for handover, with a mobility service selecting a target network entity that supports active core network services, and transmitting a handover command to perform the procedure, minimizing service disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If handover procedures are performed between network entities, then mobility and connectivity are maintained, but service disruptions occur due to interruption of ongoing communications with core network services
Solution Approach 1:
The mobility service proactively identifies and selects a target network entity that supports the UE's active core network services before the handover is triggered. This preliminary selection ensures that when handover occurs, the target entity is already prepared to maintain service continuity, thus resolving the contradiction between fast handover and service reliability.
Solution Approach 2:
The mobility service acts as an intermediary between the source network entity and the target network entity, coordinating the handover process to ensure seamless service transition. By managing the handover signaling and selecting appropriate target entities, the mobility service minimizes service disruptions while maintaining connectivity, thus resolving the contradiction between handover speed and service continuity.
2Device complexity
If traditional handover procedures are used, then mobility management is simplified, but service disruptions increase due to lack of awareness of active core network services
Solution Approach 1:
The mobility service performs multiple functions: it manages handover procedures, identifies active core network services, selects appropriate target network entities, and coordinates the transition. This multi-functional approach maintains service continuity without significantly increasing the complexity of the handover procedure itself, as the mobility service handles the additional responsibilities centrally.
Solution Approach 2:
The system implements feedback mechanisms where the mobility service receives information about the UE's active core network services and uses this feedback to make informed decisions about target entity selection. This feedback loop ensures service continuity while keeping the handover procedure manageable in complexity.
3Ease of operation
If target network entity selection is based on traditional criteria, then handover decision-making is straightforward, but service support continuity is compromised
Solution Approach 1:
The mobility service acts as an intermediary that handles the complex task of selecting target network entities based on both traditional criteria (signal strength, load) and service support criteria (which entities support the UE's active core network services). This intermediary approach maintains ease of operation at the UE level while ensuring service continuity through intelligent target selection.
Solution Approach 2:
The mobility service proactively identifies and pre-selects target network entities that support the UE's active core network services before handover is needed. This preliminary action ensures that when handover decisions must be made quickly, the mobility service already has a prepared list of suitable target entities, maintaining both ease of operation and service continuity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a measurement configuration including trigger conditions for performance of handover procedures within a service-based wireless system. The UE may transmit a message indicating a satisfaction of a trigger condition to a source network entity, a mobility service offered by a service-based network, or both. After performance of a handover decision by the source network entity, the mobility service, or both, the mobility service may select a target network entity for the handover procedure. The mobility service may select a target network entity that supports at least one active core network service at the UE. The UE may then receive a handover command from the mobility service, and may perform a handover procedure to the target network entity.