Time Synchronization Subscription Using Serving AMF Identification
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Solution Overview
Problem
The existing 3GPP coverage area-based time synchronization method fails to accurately determine whether user equipment (UE) is within the service coverage area, leading to unnecessary subscriptions and resource wastage.
Innovation Solution
A communication method where a time synchronization function network element obtains the identifier of a serving access management network element to verify if it serves the coverage area, thereby preventing unnecessary subscriptions and optimizing time synchronization service deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the time synchronization function network element subscribes to a non-serving access management network element to determine UE location, then the subscription process can be initiated, but the subscription fails and cannot determine whether the UE is in the coverage area
Solution Approach 1:
The time synchronization function network element performs preliminary action by obtaining the identifier of the serving access management network element before initiating the subscription process. This preliminary identification ensures that the subscription is directed to the correct network element that actually serves the UE, preventing subscription failures and ensuring reliable determination of UE location within the coverage area.
2Productivity
If the time synchronization function network element initiates subscription to determine UE location, then service deployment can be controlled, but unnecessary subscriptions waste resources
Solution Approach 1:
The time synchronization function network element performs preliminary action by first obtaining the identifier of the serving access management network element and determining whether it serves the tracking area in the coverage area before initiating any subscription. This preliminary verification prevents unnecessary subscriptions to non-serving network elements, eliminating resource waste while maintaining efficient service deployment only when conditions are met.
3Loss of information
If the time synchronization function network element subscribes to access management network element, then location information can be obtained, but the process becomes complex and error-prone
Solution Approach 1:
The time synchronization function network element performs preliminary action by obtaining the identifier of the serving access management network element and verifying whether it serves the tracking area in the coverage area before initiating the subscription process. This preliminary verification simplifies the overall process by ensuring that the subscription is directed to the correct network element, thereby obtaining accurate UE location information without increasing process complexity or introducing errors.
Data Source
AI summary
A communication method and a communication apparatus are provided. According to the method, a time synchronization function network element may obtain an identifier of a serving access management network element of a terminal device, and may further determine whether a target access management network element set includes the serving access management network element of the terminal device. In this way, when determining that the target access management network element set includes the serving access management network element of the terminal device, the time synchronization function network element subscribes to, from the serving access management network element of the terminal device, whether a location of the terminal device is in a coverage area of a time synchronization service, to avoid initiating unnecessary subscription. The target access management network element set includes an access management network element that serves a TA in the coverage area of the time synchronization service.