UE Mobility History Storage for Handover Optimization
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and 5G, do not effectively share user equipment (UE) mobility history information between nodes, limiting mobility optimization and handover efficiency.
Innovation Solution
Implementing a method in user equipment (UE) to store and transmit UE mobility history information to a remote computing platform when the RAN connection state changes, allowing for enhanced handover preparation and mobility optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the network collects and stores UE mobility history information at the network side, then handover preparation can be enhanced, but the information is released when UE enters idle state and cannot be shared with other nodes
Solution Approach 1:
The UE stores mobility history information locally in advance and proactively transmits it to the target node during handover preparation, before the idle state release occurs. This preliminary action ensures information availability without relying on network-side collection and storage mechanisms that drop information upon idle state entry.
Solution Approach 2:
The UE acts as an intermediary that holds mobility history information and facilitates its transfer to the target node. Instead of relying on the network to collect and maintain this information, the UE mediates the information sharing process by transmitting stored history data during handover, enabling information persistence across idle states.
2Adaptability or versatility
If mobility history information is not shared between nodes, then network complexity is reduced, but mobility optimization cannot be performed
Solution Approach 1:
The UE autonomously manages its own mobility history information by storing it locally and transmitting it proactively during handover preparation. This self-service approach enables the UE to participate in mobility optimization without requiring complex network-side coordination or centralized management mechanisms.
Solution Approach 2:
The mobility history information is segmented and stored at the UE level rather than centralized at the network level. This segmentation allows distributed management where each UE independently handles its own history data, reducing overall system complexity while enabling targeted mobility optimization for each user.
3Loss of information
If UE stores mobility history information locally, then information availability is improved, but additional memory and processing resources are required
Solution Approach 1:
The UE stores only the necessary mobility history information (visited cell list and time spent) rather than all possible network parameters. This partial action approach minimizes memory usage and processing overhead while maintaining sufficient information for handover optimization and mobility management.
Data Source
AI summary
This disclosure provides systems, methods, apparatus, and computer programs encoded on a computer storage media for providing user equipment mobility history information to a remote computing platform. In one aspect, a user equipment may store user equipment mobility history information in memory within the user equipment. The user equipment may determine whether a radio access network connection state has changed from a primary cell in a radio resource controller state to another cell outside a radio access network, to an inter-radio access technology cell, or to an out of service. The user equipment may transmit the user equipment mobility history information to the remote computing platform in response to determining that the user equipment radio access network connection state has changed from a primary cell in a radio resource controller state to another cell outside a radio access network, an inter-radio access technology cell, or an out of service state.