Dynamic Retransmission Importance for Wireless Data Packets
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Solution Overview
Problem
Current communication systems face inefficiencies in retransmitting data packets, as high importance messages require significant resources, leading to power consumption and a lower user experience, while low importance messages may not be verified, resulting in inconsistent user experiences due to opaque transmission issues.
Innovation Solution
Implementing a method where data packet retransmission importance is attenuated based on circumstances, such as the receipt of acknowledgments, with triggers for subsequent retransmissions, allowing for power-efficient communication without immediate error presentation to the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If significant resources are allocated to retransmit high importance data packets, then transmission reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the retransmission importance dynamic rather than static. The importance of a data packet changes over time based on whether acknowledgments are received. Initially, unacknowledged packets are treated as high importance, but after a threshold time without acknowledgment, the importance attenuates to low. This dynamic adjustment allows the system to adapt resource allocation to actual transmission conditions, resolving the contradiction between maintaining reliability and reducing power consumption.
Solution Approach 2:
The patent changes the parameter of retransmission importance based on time and acknowledgment status. By modifying this parameter, the system transitions from a fixed high-importance retransmission policy to a variable policy where importance decreases over time. This parameter change enables the system to balance reliability requirements with power consumption constraints by adjusting retransmission effort according to the attenuating importance level.
2Use of energy by moving object
If no resources are used to verify low importance messages, then power consumption is reduced, but user experience consistency deteriorates due to opaque transmission issues
Solution Approach 1:
The patent applies dynamics by implementing a time-based attenuation mechanism for retransmission importance. Low importance messages initially receive minimal verification resources, but if acknowledgments are not received within a threshold time, the system dynamically adjusts by attempting retransmission when triggers occur. This dynamic approach ensures that while power consumption is reduced for truly low-priority messages, user experience consistency is maintained through conditional retransmission attempts that resolve opaque transmission issues.
Solution Approach 2:
The patent uses feedback mechanisms where the system monitors acknowledgment status of transmitted messages. Based on this feedback (whether acknowledgments are received or not), the system adjusts its behavior: messages with received acknowledgments confirm successful transmission, while messages without acknowledgments after threshold time trigger retransmission attempts. This feedback loop ensures user experience consistency by resolving transmission uncertainties without continuously expending resources on all messages.
3Reliability
If immediate retransmission is performed for all unacknowledged packets, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing data packets into different importance categories (high and low importance) based on acknowledgment status and time elapsed. This segmentation allows the system to apply different retransmission strategies to different segments of traffic: aggressive immediate retransmission for high importance packets and delayed trigger-based retransmission for low importance packets. By segmenting the communication protocol this way, the system maintains reliability for critical messages while reducing overall device complexity through simplified handling of non-critical messages.
Solution Approach 2:
The patent applies partial action by not performing immediate retransmission for all unacknowledged packets, but only for those segmented as high importance. For low importance packets, the system takes partial action by waiting for triggers rather than immediate retransmission. This partial approach reduces device complexity by avoiding the need to implement complex immediate retransmission logic for all packets, while still maintaining reliability through selective application of the principle to high-importance traffic.
Data Source
AI summary
Certain data packets for transmission between a first device and a second device may have an importance that changes depending on different circumstances. After the data packet is initially communicated from the first device to the second device, if an acknowledgement is not received at the first device, the first device may retransmit the data packet. If no acknowledgement is received after a certain period of time, communication of the data packet may be considered to have a lower importance, and so additional retransmissions bay be delayed until a retransmission trigger is identified. Examples of such a trigger may be powering on of an antenna for a second different data packet transmission, or identification that a subsequent data packet was successfully received by the second device.