AMF Redirection Authentication Protection for 5G UE Registration
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Solution Overview
Problem
In the 5G communications protocol, the initial AMF directly forwarding the complete registration request message to the first AMF can result in the user equipment discarding the authentication request message, leading to registration failures.
Innovation Solution
A method where the first AMF receives an indication to protect the authentication request message, preventing the user equipment from discarding it, thereby increasing the probability of successful registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is mounted on a head-mounted display to capture images, then spatial relationship information between the user and objects can be obtained, but the device complexity and weight increase significantly
Solution Approach 1:
The patent introduces a separate image capturing device as an intermediary component that communicates with the head-mounted display through wireless or wired connections. This mediator captures images independently and transmits them to the HMD for processing, allowing the HMD to obtain spatial relationship information without permanently mounting a camera on its structure, thus reducing device complexity while maintaining measurement capability
Solution Approach 2:
The system is divided into separate functional modules: the head-mounted display handles rendering and user interface functions, while an independent image capturing device handles image acquisition. This segmentation allows each component to be optimized independently, reducing the overall device complexity by avoiding the integration of multiple functions into a single worn device
2Measurement precision
If a camera is mounted on a head-mounted display to capture images, then spatial relationship information between the user and objects can be obtained, but the weight of the head-mounted display increases
Solution Approach 1:
By using a separate image capturing device as an intermediary, the weight of the camera is not added to the head-mounted display. The mediator device can be placed on other parts of the user's body or held externally, allowing the HMD to remain lightweight while still acquiring spatial relationship information through wireless or wired communication channels
Solution Approach 2:
The system weights are segmented and distributed: the head-mounted display maintains its original lightweight design for comfort, while the image capturing function is separated into an independent device that can be positioned elsewhere on the user's body or in the environment, thus achieving measurement precision without increasing HMD weight
3Measurement precision
If depth information is obtained by capturing two images at different focal depths, then depth perception can be achieved, but the time required to obtain depth information increases
Solution Approach 1:
The system performs preliminary actions by capturing a first image at a first focal depth before the user actually needs the depth information. When depth information is required, the system has already captured preliminary image data that can be quickly processed or combined with a second image, reducing the perceived time to obtain depth information while maintaining measurement precision
Solution Approach 2:
The image capturing device operates continuously or in rapid succession to capture images at different focal depths, ensuring that the useful action of depth measurement is continuous rather than interrupted. This allows the system to maintain a stream of depth information ready for immediate use, reducing the time delay between when depth information is needed and when it becomes available
Data Source
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AI summary
Embodiments of this application provide a method and an apparatus for registration. The method for registration is used in an access and mobility management function AMF redirection scenario. The method includes: determining, by a first AMF selected, during AMF redirection, to serve UE, to protect a first message; and sending the protected first message to the UE, where the first message includes an authentication request message. This prevents the user equipment from discarding the authentication request message, and increases a probability of successful registration of the user equipment.