Wireless 911 Call Routing Optimization via Historical Density Analysis
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Solution Overview
Problem
The existing 911 emergency call routing system for wireless devices often introduces delays as calls are initially routed to the Highway Patrol before being redirected to the appropriate Public Safety Answering Point (PSAP), leading to inefficiencies and longer response times due to the historical routing method that was rationalized by the initial placement of cell towers along highways.
Innovation Solution
A system and method that determine the historical density of 911 calls in a geographical area to optimize the routing of future calls, allowing for the efficient initial routing of wireless 911 calls directly to the most appropriate PSAP, rather than relying on the Highway Patrol, by analyzing call data and adjusting routing based on jurisdictional boundaries and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If wireless 911 calls are initially routed to the Highway Patrol following historical routing methods, then the routing system maintains simplicity and consistency with original cell tower placement along highways, but the response time increases due to the need to reroute calls to the appropriate PSAP
Solution Approach 1:
The system performs preliminary analysis of historical 911 call data to determine the most appropriate initial routing destination for each cell tower sector. By pre-determining the optimal PSAP for each sector based on historical patterns, the system eliminates the need for time-consuming rerouting while maintaining simple operational procedures. The analysis is performed in advance using stored historical data, so no complex real-time calculations are needed during actual emergency calls.
Solution Approach 2:
The routing system dynamically adjusts initial routing destinations based on analyzed historical data patterns. Instead of using static, uniform routing rules, the system adapts the routing destination for each cell tower sector according to where historical calls most frequently required intervention. This dynamic approach optimizes response times while the underlying data structure remains manageable.
2Productivity
If all wireless 911 calls are routed to the Highway Patrol regardless of location, then the routing method remains simple and consistent, but the burden on the Highway Patrol increases and efficiency decreases
Solution Approach 1:
The system segments the service area into multiple cell tower sectors and analyzes historical call patterns for each sector separately. By dividing the overall routing problem into smaller, location-specific segments, the system can determine the most appropriate initial destination for each sector without overwhelming complexity. This segmentation allows the Highway Patrol to handle only the minority of calls that truly require them, while other PSAPs handle their respective local calls directly.
Solution Approach 2:
The system uses historical 911 call data as feedback to continuously improve routing decisions. By analyzing where calls originated and which PSAP ultimately handled them, the system learns the optimal initial routing for each sector. This feedback mechanism enables the system to reduce unnecessary Highway Patrol involvement while maintaining simple routing logic based on proven patterns.
3Loss of time
If the routing system uses historical data analysis to determine optimal routing destinations, then response time improves, but the system complexity and data processing requirements increase
Solution Approach 1:
The system performs all complex data processing and analysis in advance, before actual emergency calls occur. Historical call data is collected, analyzed, and stored in a format that directly supports routing decisions. When a 911 call comes in, the system simply queries the pre-analyzed data structure to determine the appropriate destination, avoiding any complex real-time processing. This preliminary action eliminates the trade-off between analysis complexity and response time.
Data Source
AI summary
A system and method for determining the historical density of 911 calls from wireless devices. This determination is made over a certain geographical area for a statistically significant amount of time. Once the historical density of these wireless 911 calls has been determined, further determining the most efficient routing of future 911 calls in order to improve the delivery of the wireless 911 call to the responding emergency service provider. The system and the method further provides a method for use by public safety officials, communication providers and other governmental or private entities to manage and control approval and actual changes to the routing of wireless 911 calls.