Packet Delivery Manager Link Quality Adaptation
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Solution Overview
Problem
Wireless communication technologies face quality of service (QOS) challenges due to environmental and movement-related factors, making existing time-based packet retry strategies ineffective for wireless links.
Innovation Solution
A method that determines the quality of links by examining different layers of the protocol stack, such as layer 2 and layer 4 of the OSI model, to adjust packet delivery and select the most suitable link for transmission, using a packet delivery manager to assess signal strength and link quality for retry strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-based retry strategy is used for packet delivery, then connection reliability is improved in wired links, but delivery efficiency deteriorates in wireless links due to unnecessary retries
Solution Approach 1:
The patent implements dynamic retry strategy by continuously monitoring link quality metrics (signal strength, bit error rate, packet loss rate) and adjusting retry behavior in real-time. When link quality degrades below thresholds, the system proactively reduces or suspends retries, adapting the delivery strategy to current wireless conditions rather than using fixed time-based intervals
Solution Approach 2:
The system establishes feedback loops by monitoring acknowledgment packets and link quality metrics from the remote device. Based on this feedback, the packet delivery manager dynamically adjusts retry parameters, reducing retries when acknowledgments are received or link quality is poor, and maintaining standard retry behavior when conditions are favorable
2Measurement precision
If multiple link quality parameters are monitored, then delivery accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments link quality assessment into distinct measurable parameters: signal strength, bit error rate, and packet loss rate. Each parameter is monitored independently with its own threshold, allowing the system to assess multiple aspects of link quality without creating a monolithic complex monitoring system
Solution Approach 2:
The system changes operational parameters dynamically by adjusting retry thresholds and retry counts based on monitored link quality parameters. When signal strength or bit error rate exceeds thresholds, the system modifies delivery parameters such as reducing retry attempts or switching transmission modes, enabling adaptive response to varying wireless conditions
Data Source
AI summary
A system and method for delivery of packets is provided. In an embodiment, a client is operable to query a first layer of the protocol stack used to provide a link that carries packets for said client. Based on the query, the client is operable to adjust how those packets are delivered over another layer of the protocol stack in order to help improve the likelihood of successful delivery of those packets.