Relay Handover Local Identifier for Secure Service Continuity
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Solution Overview
Problem
In sidelink relay communication, ensuring service continuity while maintaining communication security is challenging due to the potential security risks associated with using a device identifier to identify terminal devices during network handovers.
Innovation Solution
A communication method involving the allocation of a local identifier to terminal devices during handovers, allowing secure relay communication by using a first local identifier to identify the terminal device after the handover to a relay device, which is different from the device's regular identifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device identifier of a terminal device is directly used to identify the terminal device in relay communication, then service continuity can be maintained, but communication security deteriorates due to potential security risks
Solution Approach 1:
The patent introduces a local identifier as an intermediary element that mediates between the terminal device and the relay communication system. Instead of directly exposing the device identifier, the local identifier acts as a safe intermediary that enables identification and service continuity while preventing security risks associated with direct device identifier exposure in relay communication
2Object-affected harmful factors
If a local identifier is allocated to identify the terminal device in relay communication, then communication security is improved, but device complexity increases due to identifier management
Solution Approach 1:
The patent segments the identification system into two distinct parts: the device identifier (kept secure and private) and the local identifier (used in relay communication). This segmentation allows the system to maintain security by keeping the device identifier separate while using the local identifier for communication purposes, thereby reducing the complexity burden on the terminal device
Data Source
AI summary
The present disclosure provides a communication method. The method includes: sending a handover request to a second network device, where the handover request is used to request a handover of a terminal device to a relay device, and the relay device is within a coverage of the second network device; receiving a handover response from the second network device, where the handover response includes a first local identifier, the first local identifier is used to identify the terminal device in relay communication after a handover to the relay device, and the first local identifier is different from a device identifier of the terminal device.