Locally-Generated TEIDs for Wireless Core Node Failover
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Solution Overview
Problem
Existing communication systems face disruptions and downtime when connectivity to core nodes such as MME, SGW, AAA server, PGW, etc., is lost, leading to significant service interruptions.
Innovation Solution
A method is introduced to provide locally-generated Tunnel Endpoint Identifiers (TEIDs) to identify and migrate User Equipment (UE) from a failing node to an accessible node, ensuring uninterrupted service by using a set of TEIDs to facilitate seamless UE migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional core node connectivity is used, then service continuity is maintained under normal conditions, but service disruption occurs when core node connectivity is lost
Solution Approach 1:
The patent pre-allocates TEID pools at each RAN node before any failure occurs. When a core node fails, the RAN node can immediately use the pre-configured TEIDs to establish alternative connections without waiting for TEID allocation during the failure recovery process, thereby eliminating downtime.
Solution Approach 2:
The patent introduces locally-generated TEIDs as an intermediary mechanism between the RAN node and core network nodes. These TEIDs enable the RAN node to independently identify and migrate UEs to alternative core nodes without requiring real-time interaction with the failed core node, thus maintaining service continuity.
2Reliability
If core node failure detection and UE migration is implemented, then service disruption is reduced, but system complexity increases
Solution Approach 1:
The patent enables RAN nodes to autonomously detect core node connectivity issues and perform UE migration using pre-allocated TEID pools. The system self-manages the failover process without requiring complex centralized control or coordination with multiple network entities, thereby limiting the increase in system complexity.
3Reliability
If TEID reallocation is performed during core node failure, then UE connectivity is restored, but service interruption occurs during the reallocation process
Solution Approach 1:
The patent pre-allocates TEID pools at each RAN node before any failure occurs. When a core node fails, the RAN node can immediately use the pre-configured TEIDs to establish alternative connections without waiting for TEID allocation during the failure recovery process, thereby eliminating service interruption.
Data Source
AI summary
Systems, methods and computer software are disclosed for providing core High Availability (HA) for a wireless network. In one embodiment, a method is disclosed, comprising: providing a first node, a second node and a third node; allocating a set of locally generated Tunnel Endpoint Identifiers (TEIDs) for UEs anchored on the second node; detecting, by a first node, a second node having a connectivity issue; and migrating a User Equipment (UE) connected to the second node to a third node which is accessible; using the set of locally generated TEIDs to identify the UE migration.