Communication Device Bandwidth Identification Dynamics
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Solution Overview
Problem
Existing methods for identifying available bandwidth in communication devices are inefficient, requiring repeated extensions of the measurement bandwidth range, which can take a long time to accurately determine the available bandwidth.
Innovation Solution
A communication device that transmits measurement packets across a network to determine available bandwidth by adjusting the measurement bandwidth range based on whether the available bandwidth is on the narrowband or wideband side, using a shift amount determined by the change in bandwidth, allowing for quicker identification of available bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement bandwidth range is extended by a predetermined amount repeatedly, then the available bandwidth is eventually included in the measurement bandwidth range, but it takes a long time until the available bandwidth is identified
Solution Approach 1:
The patent applies dynamics by making the bandwidth shift amount variable rather than fixed. The shift amount determination portion dynamically adjusts the bandwidth shift amount based on the current measurement bandwidth range and the determined direction (narrowband or wideband side), allowing the measurement process to adapt its pace and efficiently converge on the available bandwidth without unnecessary repeated extensions.
Solution Approach 2:
The patent changes the parameter of bandwidth shift amount based on the relationship between the measurement bandwidth range and the available bandwidth. By determining whether the available bandwidth is on the narrowband or wideband side and adjusting the shift amount accordingly, the system optimizes the measurement process to reach the available bandwidth faster while maintaining identification accuracy.
2Measurement precision
If the measurement bandwidth range is significantly different from the available bandwidth, then the measurement process must be repeated multiple times, but this increases the time required for identification
Solution Approach 1:
The patent implements feedback by determining whether the available bandwidth is included in the measurement bandwidth range and whether it is located on the narrowband or wideband side. This feedback information is used by the shift amount determination portion to adjust the bandwidth shift amount, creating a closed-loop control system that accelerates convergence and improves identification speed while maintaining accuracy.
Solution Approach 2:
The patent performs preliminary action by determining the direction (narrowband or wideband side) where the available bandwidth is located before executing the bandwidth range extension. This preliminary directional information allows the system to shift the measurement bandwidth range more intelligently and directly toward the available bandwidth, reducing the number of repeated measurements needed.
Data Source
AI summary
A communication device transmits a plurality of measurement packets for identifying an available bandwidth to another communication device connected via a network, using bandwidths in the measurement bandwidth range. The communication device then determines whether the available bandwidth is included in the measurement bandwidth range. In a case where the available bandwidth is not included in the measurement bandwidth range, the communication device determines whether the available bandwidth is located on a narrowband side or on a wideband side with respect to the measurement bandwidth range, and determines a bandwidth shift amount based on an amount of change. The communication device updates the measurement bandwidth range by shifting one of the lower bandwidth and the upper bandwidth based on the bandwidth shift amount.