Dynamic Window Size Adjustment for Wireless Data Packet Transmission
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Solution Overview
Problem
In wireless communication networks, existing systems often set a fixed data rate that accommodates the slowest mobile device, wasting capabilities of faster devices and potentially overwhelming them, while also not efficiently managing network traffic based on device type, coverage, and congestion.
Innovation Solution
A method for dynamically adjusting the window size of data packet transmission based on round trip time (RTT), increasing or decreasing the number of packets sent according to RTT thresholds to optimize data transfer rates for various mobile devices and network conditions, using an 'in-flight' window approach that allows efficient communication channel use even during retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed data rate is set to accommodate the slowest mobile device, then reliability is improved for older devices, but productivity deteriorates for faster devices
Solution Approach 1:
The patent implements dynamic window size adjustment based on round trip time measurements. The sender adapts the window size in real-time according to network conditions and receiver capabilities, transitioning from a fixed rate approach to a dynamic one that optimizes both reliability and productivity for different device types
Solution Approach 2:
The system changes the data transmission window size parameter based on measured round trip times and identified device capabilities. By adjusting this key parameter, the system achieves reliable communication with slower devices while maximizing throughput for faster devices
2Ease of operation
If a fixed data rate is set to accommodate the slowest mobile device, then ease of operation is improved for network management, but adaptability deteriorates for different device capabilities
Solution Approach 1:
The system performs self-adjustment by automatically measuring round trip times and adapting window sizes without manual intervention. This maintains ease of operation while achieving high adaptability to different device capabilities through autonomous parameter optimization
Solution Approach 2:
The system uses round trip time measurements as feedback to continuously adjust transmission parameters. This feedback mechanism enables automatic adaptation to different device types and network conditions while requiring minimal manual configuration
3Productivity
If more data is sent to mobile devices at faster rates, then productivity is improved, but reliability deteriorates by overwhelming older devices
Solution Approach 1:
The system dynamically adjusts the window size based on measured round trip times and device capabilities. This prevents overwhelming older devices by adapting the data rate to match their processing capabilities while maximizing throughput for faster devices
Solution Approach 2:
The system sends more data than the absolute minimum required, adjusting the window size to be larger than traditional TCP would allow for wireless networks. This partial excessive action improves productivity for capable devices while the dynamic adjustment prevents overwhelming slower devices
Data Source
AI summary
A router is operative to perform the following actions for each one of a plurality of wireless mobile devices operating in a wireless network. The router transmits to the wireless mobile device a number of data packets matched for a window size. The router changes the window size for the wireless mobile device based on whether a round trip time for communicating the data packets is within a threshold value. The router will update the threshold value based on the round trip times associated with traffic communicated via the router for all of the wireless mobile devices.