Cell Broadcast Center Emergency Alert Link Caching
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Solution Overview
Problem
Emergency alert messages containing hyperlinks to supplemental information can cause network congestion and delays due to individual user requests for linked content, overwhelming servers and networks during critical events.
Innovation Solution
A cell broadcast center processes emergency alert messages by issuing requests for linked content and broadcasting it to user equipment without user selection, using HTTP requests to retrieve web server content and delivering it as HTML documents to browser caches, thereby avoiding individual user requests and reducing network traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual user requests are used to retrieve linked content, then users can access supplemental information, but network congestion and server overload occur during emergency events
Solution Approach 1:
The system performs preliminary actions by proactively retrieving and caching supplemental content associated with emergency alert hyperlinks before users actually request it. When an emergency alert is broadcast, the system automatically fetches linked web content and stores it in cache memory, so that when users activate hyperlinks, the content is already available locally without requiring real-time network requests.
Solution Approach 2:
The patent introduces a caching system as an intermediary between the web servers and user devices. This cache acts as a mediator that stores copies of supplemental content, allowing user requests to be satisfied from local cache rather than requiring direct communication with remote web servers during emergency events, thereby reducing network traffic and server load.
2Loss of information
If hyperlinks are included in emergency alerts, then supplemental information is provided to users, but network traffic and server load increase significantly
Solution Approach 1:
The system creates copies of supplemental web content and stores them in a caching system. Instead of requiring every user device to request and download content from original web servers, the cache holds local copies that can be served to multiple users simultaneously, dramatically reducing the volume of network traffic required to deliver the same information to all users.
3Ease of operation
If users request linked content individually, then personalized information access is enabled, but delivery delays occur during high-demand situations
Solution Approach 1:
The system performs preliminary retrieval and caching of supplemental content before users need to access it. By proactively fetching and storing content in cache memory when emergency alerts are broadcast, the system eliminates real-time network request delays, enabling instant content delivery when users activate hyperlinks during critical emergency situations.
Data Source
AI summary
A method and cell broadcast center (CBC) system are described for issuing an emergency alert message containing at least one hyperlink corresponding to content stored on a web server. The operations performed by the CBC include receiving an emergency alert message. The emergency alert message includes a hyperlink to web content. The CBC processes the emergency alert message by: issuing a request to a web server for a content corresponding to the hyperlink, and issuing an emergency broadcast request to carrier networks. The emergency broadcast request includes both: the emergency alert message, and the content corresponding to the hyperlink. The issuing the emergency broadcast request, causes delivery of the content corresponding to the hyperlink to a browser cache on a user equipment without user selection of the hyperlink on the user equipment.