Core Network Reachability Check for Connection Release
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Solution Overview
Problem
Current communication network connection release procedures lead to resource wastage and increased load on network elements when user equipment becomes unreachable, particularly in situations where relocation occurs without the access network's knowledge, resulting in unnecessary signaling and resource allocation attempts.
Innovation Solution
A method and system that determine whether user equipment is still reachable via the original access network subsystem before initiating a connection release, sending a specific indication element to prevent further signaling and resource allocation attempts when the equipment is deemed unreachable, thereby optimizing resource management and reducing unnecessary operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network subsystem initiates connection release procedures when user equipment becomes unreachable, then the connection management is maintained, but radio and processing capacity are wasted on useless signaling and resource allocation attempts
Solution Approach 1:
The core network subsystem performs a reachability determination before initiating the connection release procedure. By checking whether the user equipment is still reachable via the original access network subsystem beforehand, the system avoids triggering unnecessary release procedures, thereby preventing waste of radio and processing capacity while maintaining proper connection management.
2Reliability
If the access network subsystem attempts to release connections when relocation occurs without its knowledge, then connection management is maintained, but unnecessary signaling and resource allocation attempts increase network load
Solution Approach 1:
The system implements a feedback mechanism where the core network subsystem determines reachability based on information about user equipment relocation. When the core network subsystem learns that the user equipment has been relocated to a different access network subsystem, it provides feedback by determining that the equipment is unreachable via the original access network, thereby preventing the original access network from initiating unnecessary connection release procedures and reducing network load.
3Loss of energy
If the core network subsystem sends indication elements to prevent further signaling, then resource wastage is reduced, but additional signaling overhead is introduced
Solution Approach 1:
The core network subsystem determines reachability and sends an indication element to the access network subsystem before the access network initiates connection release procedures. This preliminary indication prevents the access network from performing unnecessary signaling and resource allocation attempts, reducing overall resource wastage. Although this introduces some signaling overhead, it prevents much larger amounts of wasted resources by avoiding futile connection release procedures.
Data Source
AI summary
A communication management mechanism for a communication network, in which the core network determines whether a user equipment, which was connected to the core network via an access network subsystem, is still reachable via a signaling connection to this specific access network subsystem when a connection release procedure is to be performed. When it is determined that the access network subsystem is assumed by the core network to not be able to reach via a signaling connection the user equipment, an indication element is generated which indicates the result of the core network that the user equipment can not be reached by the access network subsystem via this hitherto signaling connection. This indication element is transmitted to the access network, for example, in connection with a connection release command.