Satellite Control Message Feedback via Terrestrial Links
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Solution Overview
Problem
Satellite broadcast receivers often fail to receive control information due to poor atmospheric conditions or being powered down, leading to repeated transmissions of control messages over satellite links, which consume bandwidth and are inefficient.
Innovation Solution
Implementing a feedback mechanism using terrestrial communication links to confirm receipt of control messages, allowing the control system to terminate unnecessary retransmissions and optimize bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control messages are transmitted multiple times over satellite links to ensure receipt, then reliability of control information delivery is improved, but satellite bandwidth consumption increases and transmission efficiency deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the broadcast receiver sends acknowledgment signals back to the control system via terrestrial communication links. This feedback loop allows the control system to track which control messages have been successfully received and which require retransmission, eliminating unnecessary repeated transmissions over the satellite link while maintaining reliable delivery of control information.
Solution Approach 2:
The patent uses terrestrial communication links as an intermediary channel between the broadcast receiver and control system. Instead of relying solely on the satellite link for both transmission and confirmation, the terrestrial link serves as a mediator that carries feedback information, allowing the satellite link to focus on one-way control message delivery while the terrestrial link handles the acknowledgment protocol.
2Reliability
If control messages are transmitted multiple times over satellite links to ensure receipt, then reliability of control information delivery is improved, but satellite bandwidth consumption increases
Solution Approach 1:
The feedback mechanism enables the control system to maintain an accurate count of successfully delivered control messages. By knowing which messages have been received, the system can terminate retransmission attempts after a single failed delivery attempt, significantly reducing the quantity of control messages that need to be transmitted over the satellite link while preserving reliable delivery.
Solution Approach 2:
The broadcast receiver autonomously tracks its own receipt status of control messages and generates feedback signals accordingly. This self-service capability allows the receiver to manage its own communication needs without constant intervention from the control system, reducing overall transmission volume while ensuring reliable message delivery.
Data Source
AI summary
A method of communicating control information in a satellite broadcast communication system is presented. In the method, at least one copy of a control message set is transmitted from a control system by way of a satellite to a broadcast receiver. The control message set includes at least one control message. At least one copy of each of the control messages of the control message set is received at the broadcast receiver. A feedback message is transmitted from the broadcast receiver by way of a terrestrial communication link to the control system. The feedback message includes an indication that all of control messages of the control message set were received at the broadcast receiver. The feedback message is received at the control system. In response to receiving the feedback message, transmission of subsequent copies of the control message set is terminated at the control system.