MBMS Emergency Broadcast via Dialer PDU Conversion
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently delivering emergency information during disasters, as dedicated data channels become congested, and the Public Warning System can only carry limited text-based messages, failing to provide adequate information to users in critical situations.
Innovation Solution
A mobile communication device with a wireless transceiver and controller is configured to receive and convert Multimedia Broadcast Multicast Service (MBMS) Protocol Data Units (PDUs) to allow playback by a dialer application, determining if the MBMS belongs to an emergency service type based on system broadcast information, and converting formats to enable efficient emergency message delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If dedicated data channels are used for emergency information delivery, then information delivery capability is improved, but channel congestion occurs during major disasters
Solution Approach 1:
The patent uses the broadcast channel as an intermediary carrier to deliver emergency information. Instead of relying on dedicated data channels that become congested during disasters, the system transforms emergency messages into broadcast channel transmissions, allowing information to reach users reliably even when data channels are blocked.
Solution Approach 2:
The patent changes the transmission parameter of emergency information from dedicated data channel format to broadcast channel format. By converting the message structure and transmission method to match broadcast channel requirements, the system enables emergency information to be delivered through a different channel type that remains available during disasters.
2Reliability
If Public Warning System broadcast channel is used for emergency messages, then channel availability is improved, but information content capacity is limited to small text
Solution Approach 1:
The patent adds a new dimension to broadcast channel functionality by enabling rich media content transmission. While the broadcast channel traditionally only carries small text messages, the system extends its capability to include images, audio, and video content, effectively adding a content-type dimension to the transmission capability.
Solution Approach 2:
The patent makes the broadcast channel multi-functional by enabling it to carry both traditional text messages and rich media content. The system allows the same broadcast channel infrastructure to serve multiple information delivery purposes, from simple alerts to complex emergency instructions with visual and audio components.
3Loss of information
If custom applications are developed for MBMS playback, then emergency information playback capability is improved, but device complexity and user burden increase
Solution Approach 1:
The patent makes the native dialer application multi-functional by enabling it to play both regular phone calls and MBMS emergency broadcast content. Instead of creating a separate custom application, the system extends the existing dialer's functionality to handle emergency information playback, reducing device complexity and user burden.
Solution Approach 2:
The patent merges the emergency information playback function with the existing native dialer application. By combining these functions into a single application, the system eliminates the need for separate custom software, simplifying the user interface and reducing the overall software complexity on mobile devices.
Data Source
AI summary
A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a mobile communication network. The controller receives a Protocol Data Unit (PDU) associated with a Multimedia Broadcast Multicast Service (MBMS) from the mobile communication network via the wireless transceiver, and converts the PDU to a format which allows a dialer application to play the MBMS in response to the MBMS belonging to an emergency service type.