User Equipment Emergency Messaging via Wi-Fi Location Filtering
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Solution Overview
Problem
User equipment devices may fail to receive emergency messages due to location or environmental factors, or because they are not actively connected to a cellular network, necessitating alternative methods for emergency message delivery.
Innovation Solution
User equipment devices are configured to establish connections via wireless local area networks, satellite links, or peer-to-peer relay links, allowing them to receive and display emergency messages by transmitting an indication of support for emergency messaging and comparing location information to determine relevance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment devices rely solely on cellular broadcast technology for emergency messaging, then the messaging system is simple to implement, but the devices may fail to receive emergency messages due to location, environmental factors, or inactive cellular radio
Solution Approach 1:
The user equipment device is configured to receive emergency messages through multiple communication channels including cellular broadcast technology and wireless local area network (WLAN) connections. This multi-functionality ensures that if one channel fails due to location, environmental factors, or inactive radio, the device can alternatively receive emergency messages through another channel, thereby improving reliability without significantly increasing system complexity.
2Reliability
If user equipment devices continuously monitor multiple communication channels for emergency messages, then the reliability of message reception improves, but the energy consumption increases
Solution Approach 1:
The device dynamically adjusts its monitoring strategy by first attempting to receive emergency messages through the cellular broadcast channel when the cellular radio is active. If the cellular channel is unavailable or the device determines it cannot receive cellular broadcasts (based on location or environmental factors), the device then activates WLAN monitoring. This dynamic approach ensures reliable emergency message reception while minimizing energy consumption by only activating additional channels when necessary.
3Measurement precision
If user equipment devices transmit location information to network entities for emergency message delivery, then the accuracy of location-specific message delivery improves, but user privacy is compromised
Solution Approach 1:
The system extracts only the necessary location information needed to determine whether the device is within the geographic region specified by the emergency message. The network entity compares the device's location with the message's target region and delivers the message only if the device is within the specified area. This extraction approach ensures accurate location-specific message delivery while minimizing privacy loss by not transmitting or storing unnecessary location data.
Data Source
AI summary
This disclosure relates to transmitting an emergency message to a user equipment device (UE) over a wireless local area network (WLAN). The UE may establish a connection with an access point through WLAN. The UE may transmit, via the access point and to a network entity, an indication that the UE supports receiving emergency messaging through the WLAN. At least in part in response to communicating the indication, the UE may receive, from the network entity and via the access point, an emergency message and location information. The UE may compare the location information with a location of the UE to determine whether the UE is located within a first region specified by the location information. Based on a determination that the location of the UE is within the first region, the UE may display the emergency message on a display of the UE.