Wireless Broadcast Message Delivery via Control Channel Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless broadcast networks lack efficient mechanisms for delivering messages to multiple mobile devices, particularly for emergency alerts, as they often rely on content policies that may restrict message propagation, and do not replicate all unicast messaging capabilities in a broadcast environment.
Innovation Solution
A method and apparatus for detecting modifications in overhead information symbols of a control channel in a wireless broadcast network to receive and forward messages to mobile devices, allowing emergency or amber alerts to be propagated regardless of content policy restrictions, by monitoring sequence number increments and evaluating message relevance based on region, subject, and content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content policy enforcement is applied to control propagation of broadcast data, then content restriction and security are improved, but message delivery efficiency and reliability deteriorate
Solution Approach 1:
The patent segments message data into control channel messages and regular broadcast data. Control channel messages are extracted and handled separately from the main broadcast stream, allowing them to bypass content policy enforcement while regular broadcast data continues to be controlled. This segmentation enables efficient message delivery without compromising content restriction for other data.
Solution Approach 2:
The patent extracts control channel messages from the overhead information symbols in the broadcast stream. By taking out these critical messages and handling them through a separate reception and processing path, the system ensures they are delivered efficiently without being subject to the same content policy restrictions that apply to regular broadcast data.
2Adaptability or versatility
If unicast messaging capabilities are replicated in broadcast environment, then messaging functionality is improved, but system complexity increases
Solution Approach 1:
The patent implements a universal control channel that can carry multiple types of messages including emergency alerts, service announcements, and other broadcast messages. This single control channel structure provides multiple messaging functions without requiring separate complex systems for each message type, thereby achieving versatility while controlling system complexity.
Solution Approach 2:
Instead of having mobile devices initiate messages as in unicast networks, the patent inverts the approach by having the network proactively push messages through the control channel. This inversion simplifies the messaging architecture by eliminating the need for complex device-side message initiation protocols while maintaining comprehensive messaging functionality.
3Productivity
If broadcast network is used for message delivery, then network efficiency is improved, but message propagation reliability worsens
Solution Approach 1:
The patent implements feedback mechanisms where mobile devices acknowledge receipt of control channel messages. The network monitors these acknowledgments to ensure successful message propagation. This feedback loop maintains high reliability for critical messages while preserving the efficiency benefits of broadcast delivery, as the acknowledgment process is streamlined and does not require full bidirectional communication.
Data Source
AI summary
Systems and methodologies are described that facilitate broadcasting and receiving messages in a wireless media broadcast network. Mobile devices are equipped to receive media over a broadcast network where presentation of the data can be enabled through a content policy. Broadcast messages can be provisioned and delivered over the network such that mobile devices can receive the message regardless of the level or existence of purchased content. The messages can be broadcast for multiple purposes, including emergency messages, which can come from an emergency or amber alert system, venue and/or location specific messages, etc. The messages can be broadcast at a regional level as well by leveraging such functionality of the media broadcast network.