Redundant Session Allocation for 3GPP Communication Reliability
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Solution Overview
Problem
Communication reliability is low in 3GPP networks, particularly in industrial settings, due to network interruptions, which affect service continuity.
Innovation Solution
A communication method that determines the redundancy functionality of communication apparatuses and allocates different user plane function network elements or ports to establish redundant sessions, ensuring data backup and reliability through independent links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If communication devices implement wireless connection through 3GPP network, then network coverage and connectivity are improved, but communication reliability and service continuity deteriorate due to network interruptions
Solution Approach 1:
The patent segments the communication path by establishing separate first session and second session between terminal devices and data network, allowing independent transmission paths that can operate autonomously to maintain reliability despite network interruptions
Solution Approach 2:
The patent implements data packet duplication in advance by sending duplicate data packets through both first session and second session before any potential network failure occurs, ensuring that backup data is already in transit to cushion against interruptions
2Reliability
If redundant sessions are established between terminal devices and data network, then communication reliability is improved, but network complexity and resource consumption increase
Solution Approach 1:
The patent enables terminal devices to autonomously perform data packet duplication and session management without requiring complex centralized control, allowing each terminal to self-manage its redundant sessions which simplifies overall network complexity while maintaining reliability
Data Source
AI summary
A session management network element determines whether a first communication apparatus and a second communication apparatus have a redundancy functionality, receives a session establishment request message from a first terminal device, to request to establish a first session between the first terminal device and a data network. When both the first communication apparatus and the second communication apparatus have the redundancy functionality, and the first session is a redundant session, selects a first user plane function network element to establish the first session, where the second user plane function network element is configured to establish a second session, the first session is a redundant session of the second session, and the first session and the second session are for communication between the first communication apparatus and the second communication apparatus.