Bandwidth Measurement Using Dynamic Packet Rate Adjustment
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Solution Overview
Problem
Existing bandwidth measurement methods in public networks often result in increased network load due to transmitting packets at a wider bandwidth than the available bandwidth, leading to potential packet loss and transmission delays, especially during video conferences where accurate bandwidth measurement is crucial.
Innovation Solution
A communication device and method that dynamically adjusts packet transmission rates by setting a reference point based on recent bandwidth measurements, generating redundant data to complement media data, and packetizing it to accurately measure available bandwidth, thereby optimizing data transmission and reducing packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the transmission-side communication device transmits packets in a wider bandwidth than the most recent measurement result, then the bandwidth measurement can cover more range, but the network load increases and packet loss may occur
Solution Approach 1:
The patent applies dynamics by making the transmission bandwidth adjustable and adaptive rather than fixed. The transmission-side device dynamically changes the transmission bandwidth based on feedback from the reception-side device about the actual available bandwidth, allowing the system to optimize between measurement accuracy and packet loss prevention in real-time
Solution Approach 2:
The patent implements feedback mechanisms where the reception-side device sends bandwidth information back to the transmission-side device. This feedback loop allows the transmission device to adjust its transmission bandwidth according to the actual network conditions, preventing packet loss while maintaining accurate bandwidth measurement
2Productivity
If the transmission-side communication device transmits packets at a higher transmission rate, then the data communication efficiency improves, but the receiving-side communication device may not be able to receive media data properly
Solution Approach 1:
The transmission rate is made dynamic and adjustable based on the measured available bandwidth. The transmission-side device continuously adapts the transmission rate to match the reception capability, ensuring both high efficiency and reliable data reception without fixed or static rate settings
Solution Approach 2:
The reception-side device provides feedback about the actual available bandwidth and reception capability to the transmission-side device. This feedback enables the transmission device to adjust the transmission rate appropriately, balancing communication efficiency with data reception reliability
Data Source
AI summary
A communication device measures an available bandwidth, which is a bandwidth that can be used for data communication, while changing a transmission rate of packets. The communication device comprises a range determination portion that sets a reference point and determines a search range, a bandwidth setting portion that sets a measurement bandwidth, a first generation portion that generates media data, a second generation portion that generates redundant data, a packet generation portion that packetizes the media data and the redundant data, and a packet transmission portion that transmits measurement packets.