WiFi AAA Priority Access During Emergency Network Overload
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Solution Overview
Problem
During emergency situations, WiFi networks are often overloaded with non-first responder traffic, preventing adequate access for first responders to external data networks.
Innovation Solution
Implementing a system that provides priority access to first responders and designated individuals by pre-registering them to receive priority access via WiFi networks during emergencies, utilizing a clearinghouse AAA server to authenticate and authorize access through a Declared Emergency Location Registry (DELR) to verify emergency situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If WiFi networks allow access to all users during emergency situations, then network coverage is maintained, but first responders cannot access external data networks due to network overload
Solution Approach 1:
The patent applies local quality by differentiating service levels based on user identity and situation. First responders with pre-registered credentials receive priority service quality (higher bandwidth, lower latency) while regular users receive standard service quality. This is implemented through the AAA server identifying first responders via their credentials and applying different QoS parameters in the authorization response, thereby resolving the contradiction between maintaining network coverage and ensuring critical access during emergencies.
Solution Approach 2:
The patent implements preliminary action by requiring first responders to pre-register their credentials with the home AAA server before emergencies occur. The home AAA server stores their identification information and pre-configures priority access rights. When an emergency is detected and a first responder needs access, the system can immediately authenticate them using pre-stored credentials and grant priority access without delay, thus resolving the contradiction between rapid access and network capacity management.
2Reliability
If WiFi networks implement priority access for first responders, then critical communication is ensured, but network infrastructure complexity increases
Solution Approach 1:
The patent applies universality by making the existing AAA server infrastructure multi-functional. The home AAA server not only performs standard authentication and authorization functions but also maintains a database of pre-registered first responders and emergency situation information. The visited AAA server similarly handles both routine user authentication and priority access determination for first responders. This multi-functionality allows priority access implementation without adding separate dedicated systems, thereby resolving the contradiction between ensuring critical communication and avoiding infrastructure complexity.
Solution Approach 2:
The patent uses the AAA server as an intermediary that mediates between first responders and WiFi networks. The AAA server acts as an intermediary by receiving authentication requests from first responders, checking their pre-registered credentials against stored information, determining their eligibility for priority access, and issuing authorized access responses with appropriate QoS parameters. This intermediary function is implemented using existing authentication protocols and database mechanisms, avoiding the need for complex new infrastructure while ensuring reliable critical communication.
3Adaptability or versatility
If WiFi networks use roaming agreements for access, then user mobility is enabled, but authentication time increases during emergencies
Solution Approach 1:
The patent applies preliminary action by having first responders pre-register their credentials with the home AAA server before needing emergency access. The home AAA server stores their identification information and priority access rights in advance. When a first responder moves to a visited network during an emergency, the visited AAA server can quickly authenticate them by checking pre-stored credentials rather than performing lengthy real-time verification, thus resolving the contradiction between enabling user mobility and minimizing authentication time.
Solution Approach 2:
The patent implements feedback mechanisms where the home AAA server provides feedback information to the visited AAA server about first responder credentials and authorization status. The visited AAA server uses this feedback to quickly determine whether to grant priority access without needing to perform extensive authentication procedures. This feedback loop allows the system to maintain mobility flexibility while reducing authentication time for pre-registered first responders during emergencies.
Data Source
AI summary
In certain embodiments, a clearinghouse AAA server receives, from a WiFi network AAA server of a WiFi network, a request for a priority UE to access an external data network via the WiFi network, accesses a Declared Emergency Location Registry (DELR) database to determine whether a current emergency situation has been declared for the WiFi network, determines whether the priority UE is authenticated and authorized to access the external data network via the WiFi network, and determines whether the priority UE should receive priority or non-priority access to the external data network via the WiFi network. Depending on the situation, the WiFi network may be the UE's home WiFi network or a visited WiFi network having a roaming agreement with the home WiFi network. In this way, priority UEs can receive priority access to external data networks via Wifi networks during declared emergency situations.