NWDAF and DCCF Reselection Initiation Logic
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Solution Overview
Problem
Existing systems lack clarity on how to initiate reselection of Network Data Analytics Function (NWDAF) or Data Collection Coordination Function (DCCF) when a terminal changes location, leading to potential conflicts and service disruptions.
Innovation Solution
A method and apparatus for network function selection that includes sending and receiving registration and request information to determine whether the NWDAF/DCCF supports reselection, allowing the service consumer or network function to initiate the reselection process, thereby clarifying who should initiate the reselection to avoid conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal changes location due to mobility, then the terminal can move to new service areas, but it becomes unclear who should initiate the reselection of network functions (NWDAF or DCCF)
Solution Approach 1:
The network function (NWDAF or DCCF) automatically detects terminal mobility and initiates its own reselection when the terminal moves out of its service area. This self-service mechanism eliminates the need for complex external coordination to determine who should initiate reselection, as the system autonomously handles the transition based on service area monitoring.
Solution Approach 2:
The system implements feedback mechanisms where the network function continuously monitors terminal location and service area coverage. When the terminal moves out of the service area, this feedback triggers the reselection initiation process, providing a clear and automated decision-making pathway that resolves the ambiguity about who should initiate reselection.
2Device complexity
If reselection of network functions is not clearly initiated, then the system maintains simplicity, but service continuity may be disrupted
Solution Approach 1:
The network function performs preliminary actions by pre-configuring service area boundaries and mobility detection mechanisms. When terminal mobility is detected, the reselection process is already prepared and can be initiated immediately, ensuring service continuity without adding complex real-time decision-making logic during the actual reselection moment.
Solution Approach 2:
The patent introduces an intermediary mechanism (the network function itself acting as mediator) that bridges the gap between terminal mobility and reselection initiation. This intermediary automatically translates mobility events into reselection actions, ensuring reliable service continuity while keeping the overall system architecture relatively simple.
3Ease of manufacture
If the system does not define clear reselection initiation rules, then the implementation is simpler, but conflicts may occur during network function reselection
Solution Approach 1:
The network function (NWDAF or DCCF) autonomously determines and executes reselection initiation without requiring complex external arbitration mechanisms. This self-service approach prevents conflicts by eliminating the need for multiple entities to negotiate reselection timing and authority, while keeping the implementation relatively straightforward.
Solution Approach 2:
Instead of having the terminal or external entities initiate reselection and requiring network functions to respond, the system inverts the initiation authority to the network function itself. This inversion naturally prevents conflicts by making the network function the sole decision-maker for reselection timing and execution.
Data Source
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AI summary
A method and apparatus for selecting a network function, a communication device and a readable storage medium are provided, which belong to the technical field of communications. The method for selecting the network function according to an embodiment of the present disclosure includes: sending, by a first network function, a registration request to a second network function; wherein the registration request includes first information, and the first information is used to indicate that the first network function supports or does not support initiating reselection of a target first network function, and/or the first information is used by a service consumer to determine whether the reselection of the target first network function is initiated by the first network function.