Expedited IPsec Tunnel Establishment via Non-3GPP Gateway Probing
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Solution Overview
Problem
In mobile communication environments, the process of establishing a secure tunnel between User Equipment (UE) and a 3GPP network via non-3GPP interworking gateways is often slow due to sequential retrying without prior availability probing, leading to unnecessary delays in accessing the 3GPP network.
Innovation Solution
The UE initiates the establishment of an IPsec tunnel with a first non-3GPP interworking gateway and proactively probes the availability of other non-3GPP interworking gateways before successfully establishing the tunnel, allowing for immediate switch to an available gateway upon failure, thereby expediting the tunnel establishment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the UE sequentially retries with one non-3GPP interworking gateway until maximum retries are reached before trying the next gateway, then the tunnel establishment process is simple to manage, but the time required to establish a secure tunnel becomes excessively long
Solution Approach 1:
The UE performs preliminary availability probing of multiple non-3GPP interworking gateways before initiating the tunnel establishment process. By checking gateway availability in advance and maintaining an updated list of available gateways, the UE avoids time-consuming retry sequences and can immediately initiate tunnel establishment with a known available gateway, significantly reducing overall establishment time.
Solution Approach 2:
The system transitions from a static sequential retry approach to a dynamic parallel probing approach. The UE continuously monitors and updates the availability status of multiple gateways, dynamically selecting the next available gateway for tunnel establishment based on real-time status information rather than following a fixed sequential order with retries.
2Productivity
If the UE proactively probes multiple non-3GPP interworking gateways simultaneously, then the tunnel establishment time is reduced, but the energy consumption and processing load increase
Solution Approach 1:
Instead of probing all possible gateways simultaneously, the UE performs partial probing by selecting a limited number of gateways from the available list based on priority information. This partial action approach achieves sufficient productivity improvement while controlling energy consumption by avoiding unnecessary probing of all gateways.
Solution Approach 2:
The UE adjusts the probing parameters dynamically, including the number of gateways to probe, the probing interval, and the priority selection criteria. By changing these parameters based on current conditions (such as network state, battery level, and service requirements), the system optimizes the balance between tunnel establishment speed and energy consumption.
Data Source
AI summary
A method for expedited tunnel establishment with a non-Third Generation Partnership Project (3GPP) interworking gateway to access a 3GPP network is provided. A User Equipment (UE) initiates establishment of an Internet Protocol secure (IPsec) tunnel with a first non-3GPP interworking gateway associated with the 3GPP network. The UE probes availability of a second non-3GPP interworking gateway associated with the 3GPP network before the IPsec tunnel with the first non-3GPP interworking gateway is established successfully. The UE initiates establishment of an IPsec tunnel with the second non-3GPP interworking gateway in response to failing to establish the IPsec tunnel with the first non-3GPP interworking gateway and the second non-3GPP interworking gateway being available. The UE accesses the 3GPP network over the IPsec tunnel with the second non-3GPP interworking gateway.