Isochronous Retransmission Topologies Using Error Correction
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Solution Overview
Problem
Wireless devices experience packet losses and failed transmissions due to increased distance or environmental interference, leading to decreased link budget and communication quality.
Innovation Solution
Transmitting data packets over a first isochronous stream and supplemental data packets over the same time intervals to recreate or enhance missing data, using error correction codes to improve robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted over wireless connection, then communication capability is achieved, but packet loss occurs due to distance and interference
Solution Approach 1:
The patent applies preliminary action by transmitting error correction codes (ECC) and supplemental data packets before the actual data packets are needed for reconstruction. The source device prepares and sends redundancy information in advance, allowing the sink device to reconstruct lost packets without requiring retransmission, thus preventing the harmful effects of wireless interference and distance.
Solution Approach 2:
The patent implements beforehand cushioning by incorporating error correction codes and supplemental data that act as a protective buffer against packet loss. These redundant data elements are transmitted alongside the main data stream, providing a cushion against the harmful effects of wireless interference and distance, allowing reconstruction of lost packets without compromising communication reliability.
2Adaptability or versatility
If devices are moved away from each other to increase distance, then mobility is improved, but link budget decreases and quality deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-transmitting error correction codes and supplemental data packets that enable reconstruction of lost data. This allows devices to maintain communication quality even when moved apart, as the redundant information prepared in advance compensates for the degraded link budget caused by increased distance.
Solution Approach 2:
The patent uses error correction codes and supplemental data packets as intermediaries that mediate between the transmitted data and the received data. These intermediary elements enable the sink device to reconstruct lost packets, thereby maintaining communication reliability despite the harmful effects of increased distance between devices.
3Reliability
If error correction codes are transmitted, then data recovery capability is improved, but transmission bandwidth requirement increases
Solution Approach 1:
The patent applies partial action by transmitting error correction codes and supplemental data for only a portion of the total data packets, rather than providing full redundancy for every packet. This selective approach maintains data recovery capability for the most critical packets while limiting the additional bandwidth consumption, thus balancing reliability improvement with bandwidth constraints.
Data Source
AI summary
Methods and systems for improving the robustness of wireless communications. The methods and systems provided transmit data packets over one or more isochronous stream and transmit one or more supplemental data packets over the same time intervals. The one or more supplemental data packets are used to recreate and/or enhance at least a portion of one or more data packets of the plurality of data packets that have already been sent. Alternatively, the one or more supplemental data packets are used to create and/or enhance at least a portion of one or more data packets of the plurality of data packets that will be received during the next isochronous intervals. The methods and system described herein allow for increased robustness by allowing for better retransmission with correctly received packets.