5G Network Slice Resource Adjustment for Seamless Handovers
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Solution Overview
Problem
Current 5G networks lack efficient mechanisms for managing and adjusting slice resources, particularly during handovers, which are essential for ensuring seamless service continuity and adapting to varying service requirements across different scenarios.
Innovation Solution
The implementation of a communication method that involves sending slice resource adjustment messages between access network devices and terminals, and between core and access network devices, to dynamically adjust resources such as spectrum bandwidth and center frequency, enabling smooth handovers between slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a unified pipeline architecture is used to provide communication services, then the network structure is simple and easy to implement, but it cannot effectively meet the differentiated performance requirements of different services
Solution Approach 1:
The patent segments the unified pipeline architecture into multiple network slices, each tailored to specific service requirements. The network is divided into independent slice entities that can be independently configured and managed, allowing different services (e.g., eMBB, URLLC, mMTC) to have dedicated resource pools while sharing the underlying infrastructure.
Solution Approach 2:
The patent implements dynamic slice resource adjustment mechanisms that allow the network to adaptively allocate resources based on real-time service demands. Slice resources can be dynamically scaled, modified, or reconfigured without disrupting the overall network structure, enabling the system to respond to changing traffic patterns and service requirements.
2Stability of the object's composition
If slice resources are statically allocated, then the network configuration is simple and stable, but it cannot adapt to varying service requirements and handover scenarios
Solution Approach 1:
The patent implements dynamic slice resource adjustment mechanisms that allow the network to adaptively allocate resources based on real-time service demands. Slice resources can be dynamically scaled, modified, or reconfigured without disrupting the overall network structure, enabling the system to respond to changing traffic patterns and service requirements.
Solution Approach 2:
The patent incorporates feedback mechanisms where the network continuously monitors slice resource utilization and service performance metrics. Based on this feedback, the system automatically adjusts slice configurations and resource allocations to maintain optimal service quality while adapting to varying demands across different scenarios.
3Device complexity
If handover mechanisms are not designed for slice-specific scenarios, then the control logic is simple, but service continuity cannot be ensured during slice transitions
Solution Approach 1:
The patent implements preliminary handover preparation mechanisms where target slice resources are pre-configured and validated before actual handover execution. The network performs advance resource reservation and compatibility checks to ensure seamless service continuity during slice transitions, reducing handover failure rates and service interruptions.
Solution Approach 2:
The patent introduces intermediary handover control entities that coordinate slice-specific handover procedures. These intermediaries manage the complex interactions between source and target slices, ensuring proper resource allocation, data forwarding, and service state preservation during transitions, thereby maintaining service continuity without requiring complex end-to-end control logic.
Data Source
AI summary
The present disclosure describes example communication methods, terminals, access network devices, and core network devices. One example communication method includes sending, by an access network device, a slice resource adjustment message to a terminal, where the slice resource adjustment message includes target resource information, and wherein the slice resource adjustment message is used to instruct the terminal to adjust a resource of a slice currently accessed by the terminal to the target resource. The access network device receives a slice resource adjustment complete message sent by the terminal, where the slice resource adjustment complete message is used to indicate that the terminal has adjusted the resource of the slice currently accessed by the terminal to the target resource.