Redundant Packet Transmission With Priority and Feedback Coordination
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Solution Overview
Problem
Conventional iPRP communication systems in IWLAN networks lack coordination mechanisms, leading to unnecessary redundant data transmissions and reduced data throughput due to uncoordinated data sending behaviors among access points and clients.
Innovation Solution
A communication method that introduces priority labels for redundant data copies, where a high-priority copy is sent first, and if successful, the secondary copy is discarded, while a low-priority copy is retained. If the high-priority copy fails, a failure message is sent to the secondary sender to transmit the low-priority copy, ensuring data delivery without redundant transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both redundant copies of data are transmitted simultaneously, then data delivery reliability is improved, but wireless resource waste increases and data throughput decreases
Solution Approach 1:
The patent applies preliminary action by transmitting only the first copy of data initially and marking subsequent copies as redundant. The system waits for confirmation of successful transmission of the first copy before deciding whether to transmit the second copy, thereby avoiding unnecessary redundant transmissions that waste wireless resources and reduce throughput.
Solution Approach 2:
The patent implements feedback mechanisms where the receiving end sends confirmation messages back to the sending end. This feedback loop allows the system to learn whether the first copy was successfully transmitted and whether the second copy is needed, enabling intelligent decision-making that balances reliability with resource efficiency.
2Reliability
If redundant data copies are transmitted without coordination, then data delivery reliability is improved, but unnecessary redundant transmissions occur and wireless resources are wasted
Solution Approach 1:
The system performs preliminary action by transmitting only the first copy initially and using feedback information to determine whether the second copy is necessary. This prevents unnecessary redundant transmissions that would waste wireless energy and resources while maintaining adequate reliability.
Solution Approach 2:
The feedback mechanism allows the system to learn the transmission status of the first copy and adjust its behavior accordingly. If the first copy is successfully transmitted, the system receives feedback indicating this and decides not to transmit the second copy, thereby avoiding energy waste from redundant transmissions.
3Productivity
If coordination mechanism is introduced for redundant data transmission, then data throughput is improved, but system complexity increases
Solution Approach 1:
The patent introduces a relatively simple feedback mechanism where receiving ends send confirmation messages to sending ends. This feedback approach enables coordination between redundant transmissions without requiring complex centralized control or sophisticated protocols, thus improving throughput while keeping system complexity manageable.
Solution Approach 2:
The system implements self-service by allowing each sending end to autonomously decide whether to transmit the second copy based on feedback information from the first copy's transmission status. This distributed decision-making approach improves throughput without requiring complex system-wide coordination mechanisms.
Data Source
AI summary
Teachings herein include communication methods for a redundant communication system including two sending ends, two receiving ends, and a data source. An example includes: receiving a first copy of a data packet at the first end and receiving a second copy at the second end from the data source, wherein the first has a high priority label and the second has a low; sending the first copy from the first end to the first receiving end; retaining the second copy at the second end; receiving a confirmation message from the first receiving end at the first sending end and, in response, sending a success message to the second sending end and discarding the second copy; if the first sending end does not receive the confirmation message within a given time period, sending a failure message to the second sending end and, in response, sending the second copy to the second receiving end.