MEC Access Point Selection Using User Location and Network Topology
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Solution Overview
Problem
In 5G networks, the current method for selecting a data network access identifier (DNAI) for multi-access edge computing (MEC) servers does not consider the actual locations of user equipment, leading to suboptimal server selection and affecting service quality for users in a terminal group.
Innovation Solution
A method for determining an MEC access point based on network topology information of MEC access points closest to the users, considering their locations and connection relationships to optimize the path and save network resources while improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AF selects a same DNAI as an access point for each user in the terminal group based on IP address, then service consistency is maintained, but service quality deteriorates due to suboptimal server selection
Solution Approach 1:
The patent applies local quality by selecting different MEC access points for different users within the same terminal group based on their individual locations. Instead of uniformly assigning the same DNAI to all users, the system evaluates each user's geographic position and connects them to the nearest suitable MEC server, thereby optimizing service quality locally for each user while maintaining group service consistency.
Solution Approach 2:
The patent implements dynamics by making the access point selection adaptive and changeable based on real-time location information. The AF dynamically determines the optimal DNAI for each user according to their current position, allowing the system to respond to location changes and optimize connections continuously rather than using static assignment.
2Ease of operation
If the AF selects DNAI according to IP address without considering location, then selection simplicity is maintained, but path optimality deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-obtaining and storing location information of users in the terminal group before the actual access point selection process. The AF retrieves location data in advance from the location management function, so that when DNAI selection is needed, the system already has the necessary location information ready, maintaining operational simplicity while enabling location-based optimization.
Solution Approach 2:
The patent introduces an intermediary mechanism by using the AF as a mediator between the terminal group and the MEC access points. The AF receives location information, processes it to determine optimal DNAIs, and then assigns appropriate access points to users. This intermediary approach simplifies the overall process by centralizing the decision-making logic while maintaining ease of operation.
3Productivity
If users are connected to non-optimal MEC servers, then network resource allocation is simplified, but network resource efficiency deteriorates
Solution Approach 1:
The patent applies parameter changes by using location information as a key parameter to determine DNAI selection. The system changes the selection criterion from static IP-based assignment to dynamic location-based assignment, thereby optimizing network resource efficiency. By changing this critical parameter, users are connected to the nearest MEC servers, reducing network latency and improving resource utilization.
Solution Approach 2:
The patent implements feedback by continuously monitoring user locations and adjusting DNAI assignments accordingly. The system obtains location information from the location management function and uses this feedback to determine the optimal access point for each user, ensuring that network resource allocation remains efficient as users move or their positions change.
Data Source
AI summary
A method includes obtaining a first multi-access edge computing (MEC) access point to be accessed by terminals in a terminal group of a first service. The first MEC access point is obtained based on network topology information of MEC access points that are respectively closest to the terminals and that support the first service. The network topology information indicates at least one of whether at least two MEC access points are connected or performance of a link between at least two MEC access points. The terminal group includes one or more of a terminal requesting the first service or a terminal subscribing to the first service. The method also includes sending an identifier of the first MEC access point to a session management network element that controls the terminals. The identifier of the first MEC access point is used by the terminals to access the first MEC access point.