Terminal Handover Security Control for Consecutive Cell Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional communication systems face challenges in efficiently managing security updates and Layer 2 processing during handover processes, leading to frequent signaling overhead and potential disruptions in service continuity, especially in scenarios involving multiple handovers.
Innovation Solution
A communication method and system that allows terminal devices to determine whether to perform security updates and Layer 2 processing based on scenario information, using candidate cell configurations provided by the network, thereby optimizing handover processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security update and Layer 2 processing are performed for every handover, then security reliability is improved, but signaling overhead increases and service continuity may be disrupted
Solution Approach 1:
The patent changes the parameter of security update frequency from 'every handover' to 'conditional based on scenario information'. The terminal device determines whether to perform security update and Layer 2 processing by evaluating scenario information, which includes handover type (intra-frequency, inter-frequency, inter-RAT), handover cause (mobility, load balancing, optimization), and security configuration parameters. This conditional approach reduces unnecessary security updates while maintaining security reliability when needed.
Solution Approach 2:
The terminal device autonomously determines whether to perform security update and Layer 2 processing by evaluating scenario information itself, without requiring explicit network instruction for each handover. The device uses pre-configured parameters and current handover context to make the determination, reducing signaling overhead while ensuring security requirements are met.
2Reliability
If security update and Layer 2 processing are performed for every handover, then security reliability is improved, but service continuity is disrupted
Solution Approach 1:
The patent changes the parameter of security update timing from 'every handover' to 'conditional based on scenario information'. By evaluating handover type, cause, and security configuration, the terminal device performs security updates only when necessary, reducing service disruption duration while maintaining security reliability for handovers that require it.
Solution Approach 2:
The patent introduces dynamic decision-making where the terminal device adapts security update behavior based on current handover conditions. The scenario information evaluation allows the device to dynamically adjust whether to perform security update and Layer 2 processing, optimizing the balance between security reliability and service continuity for each specific handover situation.
3Reliability
If frequent security updates are performed, then security reliability is improved, but handover efficiency decreases
Solution Approach 1:
The patent changes the frequency parameter of security updates from 'frequent (every handover)' to 'conditional based on scenario information'. The terminal device evaluates handover type, cause, and security configuration to determine appropriate update frequency, improving handover efficiency by eliminating unnecessary updates while maintaining security reliability when required.
Solution Approach 2:
The terminal device autonomously optimizes security update frequency by evaluating scenario information, eliminating the need for network-controlled frequent updates. This self-service approach improves handover efficiency while ensuring security updates occur only when the scenario warrants them.
4Productivity
If flexible security update control is implemented, then handover efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring scenario information parameters and security configuration information before handovers occur. The terminal device has pre-defined evaluation criteria including handover type, handover cause, and security parameters, which simplifies the decision-making process during actual handovers while maintaining flexible security update control and high handover efficiency.
Data Source
Figure 1~2
Figure 3~4
Figure 5~8
AI summary
The present application relates to a communication method, a terminal device, and a network device. The method comprises: when executing a first handover to one or more candidate cells, a terminal device determines, on the basis of first scene information, whether to perform security updating and/or layer-2 processing. According to embodiments of the present application, the security updating and/or layer-2 processing can be flexibly controlled on the basis of scene information in the handover process.