PDN Connection Release Based on Service Status and Location
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Solution Overview
Problem
In the Evolved Packet System (EPS), when releasing a PDN connection, the system only considers if it is the last connection, leading to frequent reestablishment of PDN connections, resulting in network resource waste due to inefficient management of multiple PDN connections.
Innovation Solution
A method for user equipment to determine the service transmission status and location area information of PDN connections, allowing for targeted release of connections that are not needed, such as those with stopped transmission and non-overlapping location areas, thereby avoiding unnecessary reestablishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the EPS releases a PDN connection when it is not the last connection, then the system simplifies connection management, but the PDN connection may be reestablished frequently causing network resource waste
Solution Approach 1:
The network side performs preliminary actions by determining whether service transmission has stopped and whether the user equipment is in a location area where the PDN connection is not needed before releasing the connection. This advance assessment prevents premature release and subsequent reestablishment, resolving the contradiction between simplified management and resource waste.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring service transmission status and user equipment location. This feedback loop allows the network to make informed decisions about PDN connection release, ensuring connections are released only when appropriate and avoiding unnecessary reestablishment.
2Productivity
If the system maintains multiple PDN connections, then network end-to-end throughput rate and utilization improve, but the complexity of managing these connections increases
Solution Approach 1:
The invention extracts and separates the decision-making logic for PDN connection release from the user equipment and places it on the network side. The network side independently evaluates service transmission status and location information to determine release timing, simplifying user equipment while maintaining optimal connection management for high throughput.
Solution Approach 2:
The system changes the control parameter from user equipment-driven release decisions to network-side decisions based on service transmission status and location parameters. This parameter transformation enables more sophisticated management of multiple PDN connections without increasing user equipment complexity.
3Device complexity
If the PDN connection is released based only on whether it is the last connection, then the release process is simple, but the connection may be released when still needed requiring reestablishment
Solution Approach 1:
The network side performs preliminary assessment of service transmission status and user equipment location before releasing PDN connections. This advance evaluation ensures connections are released only when truly unnecessary, preventing premature release while maintaining simple release execution.
Solution Approach 2:
The system uses feedback from service transmission monitoring and location tracking to inform release decisions. This feedback mechanism ensures connections are maintained when needed and released when appropriate, improving reliability without significantly complicating the release process.
Data Source
Figure 1
Figure 2~4
AI summary
Embodiments of the present invention disclose a PDN connection release method and apparatus, and user equipment. In the PDN connection release method, user equipment may determine a service transmission status of a target packet data network PDN connection, location area information corresponding to the target PDN connection, and a current location of the user equipment, and may release the target PDN connection when the user equipment determines that a first condition is met. The target PDN connection is any one or more of a plurality of PDN connections maintained by the user equipment, and the first condition may include: the service transmission status of the target PDN connection is that service transmission has stopped, and a location area indicated by the location area information corresponding to the target PDN connection does not include the current location of the user equipment. This can avoid a network resource waste caused by PDN connection reestablishment that occurs when a PDN connection is randomly released.