Emergency Call Scheduler for Wireless Network Prioritization
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Solution Overview
Problem
In emergency situations, existing telecommunication systems face challenges in ensuring reliable and high-quality network connectivity across different generations of cellular technologies, which can hinder effective communication for emergency responders.
Innovation Solution
An emergency call scheduler is implemented in the application layer of user equipment to prioritize network technologies based on communication type, network provider status, and location, allowing for parallel connection attempts and verification of connections to ensure Quality of Service (QoS) thresholds are met, with a centralized server capable of updating priorities and optimizing network topology dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless devices initiate emergency calls on any wireless network using any access technology, then emergency call accessibility is improved, but network connectivity reliability deteriorates due to varying network quality and location accuracy
Solution Approach 1:
The patent implements dynamic network selection by continuously monitoring network conditions (signal strength, quality metrics, location accuracy) and adjusting the selected network in real-time. The device can switch between different wireless networks (2G, 3G, 4G, LTE) based on current emergency call requirements, ensuring both broad accessibility and reliable connectivity through adaptive decision-making algorithms
Solution Approach 2:
The patent introduces an emergency call manager as an intermediary component that mediates between the user device and multiple wireless networks. This manager evaluates network conditions, selects appropriate networks for emergency calls, and manages connections across heterogeneous networks, thereby maintaining reliability while preserving accessibility across different network types
2Speed
If parallel connection attempts are made across multiple network technologies, then connection establishment speed is improved, but device complexity increases
Solution Approach 1:
The patent segments the connection establishment process into independent parallel tasks for different network technologies (2G, 3G, 4G, LTE). Each network connection attempt is handled as a separate modular operation, allowing simultaneous initiation without requiring complex interdependencies. The emergency call manager coordinates these segmented operations independently, reducing overall system complexity while achieving fast parallel connection attempts
3Reliability
If connection verification is performed to ensure QoS thresholds are met, then communication reliability is improved, but call setup time increases
Solution Approach 1:
The patent performs preliminary network evaluation and QoS assessment before final connection establishment. The emergency call manager pre-checks network conditions, signal strength, and quality metrics to predict whether a network will meet QoS requirements. This preliminary action filters out unsuitable networks early, preventing wasted connection setup time on networks that would fail verification, thus reducing overall call setup time while maintaining reliability
Data Source
AI summary
The systems, devices, and techniques described herein are directed to scheduling wireless communications and verifying connections, for example, in an emergency call context. An emergency call scheduler can be installed in an application layer of user equipment to manage call scheduling. During an emergency situation, the emergency call scheduler can attempt to establish a communication based on a priority of network technologies (e.g., LTE, 4G, 3G, 2G) or a base station being in a subscriber network. As a call is established, a connection may be verified based at least in part on satisfying one or more handshake protocols and based at least in part on transmitting or receiving voice and/or data packets. Based on a location of the user equipment, or as a network topology is updated, a centralized server can update the emergency call scheduler to change the call scheduling priority.