Proxy Mobile Station Selection for Public Safety Network Resilience
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Solution Overview
Problem
Public safety agencies face challenges in maintaining priority and quality of service for certain application services when the connection between mobile stations and networks is compromised, particularly during incidents that cause congestion or loss of access in the allocated broadband spectrum.
Innovation Solution
A method and apparatus that enable a mobile station operating on a first wireless access technology to select and communicate with a proxy mobile station operating on a second wireless access technology, using ad-hoc networks and local area network transceivers to maintain communication and access to network resources, even when the primary network is congested or unavailable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile stations rely on broadband network connections for critical communication services, then quality of service and priority access can be maintained under normal conditions, but communication reliability deteriorates when the network becomes congested or unavailable during incidents
Solution Approach 1:
The patent introduces intermediary mobile stations that act as proxies between disconnected mobile stations and the network. These intermediary stations receive messages from disconnected stations via ad-hoc wireless connections and forward them to the network when available, or store them for later delivery. This intermediary mechanism maintains communication reliability without requiring fundamental changes to the core network architecture.
Solution Approach 2:
The system performs preliminary actions by establishing ad-hoc communication channels between mobile stations before network disconnection occurs. Mobile stations pre-register their capabilities and establish peer-to-peer communication paths, so that when the network becomes unavailable, they can immediately switch to using intermediary stations without delay. This preliminary setup ensures seamless failover and maintains service continuity.
2Productivity
If multiple users share the broadband spectrum allocated for public safety, then spectrum utilization efficiency is improved, but network congestion and loss of access occur during incidents
Solution Approach 1:
The patent segments the communication system into multiple independent layers: the primary broadband network layer for normal operation, and a secondary ad-hoc mesh network layer for emergency operation. Mobile stations can operate on either layer or switch between layers based on network conditions. This segmentation allows high spectrum utilization on the broadband network during normal times while providing an alternative reliable path during congestion through the ad-hoc layer.
3Adaptability or versatility
If mobile stations use ad-hoc networks for device-to-device communication, then access to network resources is maintained during outages, but device complexity and resource requirements increase
Solution Approach 1:
The patent implements self-service mechanisms where mobile stations autonomously detect network availability, select appropriate intermediary stations, and manage their own message routing without requiring centralized control. Each mobile station maintains a local cache of intermediary station information and automatically switches communication paths based on real-time network conditions. This self-service approach provides high adaptability while minimizing the need for complex centralized management infrastructure.
Data Source
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AI summary
A first mobile station operating on a first network according to a first network protocol receives a proxy request for access to a network resource, by from a second mobile station operating on a second network according to a second network protocol. The proxy request is received according to a third network protocol. The first mobile station determines a priority of the proxy request; accepts or denies the proxy request based on the determined priority of the proxy request; allocates resources to the proxy request, if the proxy request is accepted; and serves as a proxy mobile station for the second mobile station to access the network resource.