Data Transmission Protocol Selective Retransmission
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Solution Overview
Problem
Existing data transmission protocols face challenges in minimizing airtime usage while effectively mitigating packet loss across multiple receiving devices.
Innovation Solution
The proposed solution involves a data distribution device that selects a receiving device to send retransmission requests, allowing for the use of unicast transmissions to minimize airtime while ensuring packet loss is addressed across all receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multicast transmissions are used to send data to multiple receiving devices, then packet loss mitigation is improved through retransmission requests, but airtime usage increases
Solution Approach 1:
The patent extracts the retransmission request functionality from all receiving devices and assigns it to a single selected receiving device. This reduces airtime usage by eliminating redundant retransmission requests from multiple devices while maintaining packet loss mitigation through the selected device's feedback mechanism.
Solution Approach 2:
The patent introduces a selected receiving device as an intermediary that acts on behalf of all receiving devices to send retransmission requests. This intermediary approach allows the system to maintain reliable packet loss mitigation while reducing overall airtime consumption by consolidating feedback communications.
2Loss of time
If unicast transmissions are used to minimize airtime usage, then airtime usage is reduced, but packet loss mitigation across all receiving devices becomes challenging
Solution Approach 1:
The patent makes a single unicast transmission serve multiple functions: it delivers data to the selected receiving device and simultaneously provides feedback information about packet loss conditions for all receiving devices. This multi-functionality allows airtime reduction while maintaining system-wide packet loss mitigation.
Solution Approach 2:
The patent implements a feedback mechanism where the selected receiving device monitors packet loss conditions across all receiving devices and sends retransmission requests based on this aggregated feedback. This enables effective packet loss mitigation using minimal airtime by consolidating feedback from multiple devices into a single communication channel.
Data Source
AI summary
Systems and methods for data transmission protocols are disclosed. For example, a receiving device is selected to send retransmission requests when data packet loss occurs, and then a unicast transmission of data packets may be sent to that selected receiving device. Other receiving devices may be configured to receive the unicast transmission as sent to the selected receiving device and to process the transmission as a multicast transmission. Alternatively, a multicast transmission may be sent to all of the receiving devices, and the selected receiving device may be configured to process the multicast transmission as a unicast transmission for the purpose of sending retransmission requests indicating packet loss. Backup packets may be generated and sent to all of the receiving devices to improve content output quality.