Targeted Message Delivery in Unidirectional Satellite Systems
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Solution Overview
Problem
Current direct broadcast satellite systems face inefficiencies in message delivery due to limited bandwidth, requiring a 'message flood' across multiple channels, which wastes capacity and interrupts other services when receiving devices tune to an agreed-upon channel at an agreed-upon time.
Innovation Solution
Implementing a method where messages are transmitted only on an agreed-upon channel at an agreed-upon time, with each message tagged with a unique address, allowing receiving devices to filter and decode messages efficiently, while coordinating channel and time usage between the service provider and receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If messages are transmitted using multi-channel message flood to ensure delivery, then message delivery reliability is improved, but channel capacity consumption increases
Solution Approach 1:
The system segments messages by assigning unique addresses to individual receiving devices, allowing targeted transmission on specific channels rather than flooding all channels. Each message is routed to a specific receiving device based on its address, dividing the broadcast traffic into targeted segments.
Solution Approach 2:
The system performs preliminary coordination between the service provider and receiving devices to establish agreed-upon channels and times for message transmission. This advance arrangement ensures that receiving devices are ready to receive messages on specific channels at specific times, eliminating the need for multi-channel flooding.
2Productivity
If receiving devices tune to an agreed-upon channel to receive messages, then message delivery efficiency is improved, but other services are interrupted
Solution Approach 1:
The system uses periodic action by scheduling message transmissions at agreed-upon times when receiving devices are expected to be tuned to the message channel. The service provider transmits messages at these predetermined intervals, and receiving devices temporarily tune to the message channel only during these scheduled times to receive updates.
Solution Approach 2:
The system uses copying by having receiving devices store message content in memory during the agreed-upon reception time, then copying this stored content to the user interface or other output devices. This allows the device to receive messages on a dedicated channel without permanently interrupting other services, as the message content is captured and made available later.
3Productivity
If CAP data stream bandwidth is increased to improve message delivery capacity, then message throughput is improved, but system legacy constraints prevent bandwidth increase
Solution Approach 1:
The system applies universality by using the existing CAP data stream infrastructure for multiple purposes: traditional conditional access messaging and the new targeted message delivery system. The same data stream carries both types of information, allowing the system to serve multiple functions without requiring additional bandwidth or modifying the legacy system architecture.
Solution Approach 2:
The system changes parameters by modifying the transmission strategy rather than the physical bandwidth. Instead of increasing data stream capacity, the system changes how messages are transmitted by using address tagging and coordinated channel selection, achieving improved message delivery capacity through parameter optimization rather than resource expansion.
Data Source
AI summary
A method and system for efficiently delivering messages from a service provider to individual receiving devices in a unidirectional, multi-channel communications system that provides parallel distribution of information from the service provider to the receiving devices. The messages are transferred from the service provider to the receiving device only on an agreed-upon channel at an agreed-upon time, wherein each message is tagged with an address corresponding to the receiving device by the service provider and then transmitted by the service provider to the receiving device on the agreed-upon channel with the receiving device filtering the agreed-upon channel to detect the address and decode its messages. The agreed-upon channel and the agreed-upon time of message transfers are coordinated between the service provider and the receiving device prior to transferring the message from the service provider to the receiving device.