Core Network Element Address Sharing for Roaming Signaling Visibility
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Solution Overview
Problem
When a terminal device moves from its home area to a roaming area, the network operator in the home area is unable to determine the communication data of the terminal device, affecting its interests.
Innovation Solution
A network element selection function device obtains the address of a core network element in the home area and sends information to a core network element in the roaming area, allowing them to establish a connection and transmit signaling, thereby enabling the home area network operator to obtain communication data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal device establishes a signaling transmission channel with a network in the roaming area, then the terminal device can communicate in the roaming area, but the network operator in the home area is unable to determine communication data of the terminal device
Solution Approach 1:
The patent introduces a network element selection function device as an intermediary between the home area network and the roaming area network. This intermediary obtains the address of the core network element in the home area and transmits it to the roaming area network element, enabling the home area network operator to access communication data while the terminal device communicates in the roaming area.
2Ease of operation
If the terminal device moves from home area to roaming area, then the terminal device can access local networks, but the home area network operator cannot obtain communication data
Solution Approach 1:
The patent implements preliminary action by having the network element selection function device obtain and prepare the address of the home area core network element before the roaming area network element needs to access communication data. This advance preparation ensures that when the terminal device moves to the roaming area, the home area network operator can immediately obtain communication data without delay.
3Loss of information
If a connection is established between roaming area and home area networks, then the home area network operator can obtain communication data, but the system complexity increases
Solution Approach 1:
The network element selection function device is designed with multi-functionality, serving as both a local network element in the roaming area and a bridge to the home area network. By consolidating multiple functions into a single device, the patent reduces the overall system complexity while still enabling the home area network operator to access communication data.
Data Source
AI summary
A communication method and apparatus. The method is applied to a network element selection function device and includes obtaining an address of a first core network element in a first area, the network element selection function device is located in a second area, and sending first information. A second core network element in the second area uses the first information to obtain the address of the first core network element in the first area and transmits signaling of a terminal device based on the address of the first core network element. The first area is a roaming area of the terminal device, and the second area is a home area of the terminal device; or vice versa.