IoV Mobility Management via RRC Reconfiguration
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Solution Overview
Problem
In Internet of Vehicles (IoV) technology, conventional D2D communication methods struggle to efficiently allocate resources due to the high density of terminals in the same location area, leading to signaling load imbalances and inadequate resource management.
Innovation Solution
A mobility management method is introduced, where a network side device sends a RRC connection reconfiguration message to an IoV terminal, prompting it to update its physical location information and optimize radio resource allocation based on neighboring terminals' resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional D2D communication technology is used for resource allocation in Internet of Vehicles, then terminals can automatically obtain communication resources from resource pools, but resource allocation cannot meet the demands of Internet of Vehicles communication due to high terminal density in the same location area
Solution Approach 1:
The patent segments the resource allocation process into two parts: (1) automatic resource pool configuration for general cases, and (2) network-side scheduled resource allocation for high-density scenarios. This segmentation allows the system to adaptively switch between allocation modes based on terminal density, improving overall resource allocation efficiency while managing high terminal density effectively.
Solution Approach 2:
The patent implements dynamic resource allocation by allowing the network side to dynamically adjust resource pool configurations and switch between different allocation modes (automatic vs. scheduled) based on real-time terminal density conditions. This dynamic adaptation enables the system to optimize resource allocation efficiency for Internet of Vehicles communication under varying density conditions.
2Productivity
If location information update mechanisms are not implemented, then signaling load remains balanced, but resource allocation and optimization are affected due to outdated location information
Solution Approach 1:
The patent implements preliminary location information update mechanisms by configuring terminals to proactively report location information at predetermined intervals or when entering/leaving location areas. This preliminary action ensures location information is updated before resource allocation decisions are made, enabling optimized resource allocation while managing signaling load through predetermined update triggers rather than continuous reporting.
3Reliability
If location information is not updated timely, then signaling load remains stable, but resource allocation cannot be optimized for moving terminals
Solution Approach 1:
The patent implements feedback mechanisms where the network side receives location information updates from terminals and uses this feedback to dynamically adjust resource pool configurations and allocation parameters. This feedback loop ensures resource allocation accuracy is maintained by continuously adapting to terminal location changes, while the feedback trigger conditions (interval-based or event-based) help manage the timing and frequency of updates.
Data Source
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AI summary
Disclosed in the present invention is a mobility management method. The method comprises: when a network side device determines that network switching needs to be performed on an Internet-of-vehicles terminal, the network side device sends a radio resource control (RRC) connection reconfiguration message to the Internet-of-vehicles terminal; and the Internet-of-vehicles terminal receives the RRC connection reconfiguration message sent by the network side device, and after the Internet-of-vehicles terminal completes radio resource reallocation according to the RRC connection reconfiguration message, the Internet-of-vehicles terminal sends, to the network side device, an RRC connection reconfiguration completion message carrying current physical position information of the Internet-of-vehicles terminal. Also disclosed in the present invention are a network side device, an Internet-of-vehicles terminal, and a system.