Multipath Wireless Protocol Activation via Local Delay Time
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Solution Overview
Problem
Conventional wireless communication devices take a long time to detect link deterioration or network congestion, leading to prolonged delays and limited bandwidth in single-link mode, as they rely on Round-Trip Time (RTT) or packet loss rate, which are determined only after deterioration occurs.
Innovation Solution
A wireless communication device uses local delay time to control the activation of a multipath communication protocol, switching to a multilink mode by determining the time from a packet transmission request to the start of transmission or packet reception, and activating the protocol based on predetermined thresholds to preemptively switch to multipath communication when link deterioration or congestion is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the mobile phone uses single-link mode of communications, then the device complexity is reduced, but the bandwidth and delay performance deteriorate when link deterioration or network congestion occurs
Solution Approach 1:
The patent applies preliminary action by measuring local delay time continuously and comparing it against a predetermined threshold before actual link deterioration severely impacts performance. This proactive measurement and comparison enables the system to switch to multipath communication mode in advance, preventing the worsening of bandwidth and delay performance rather than reacting after deterioration occurs.
2Productivity
If the mobile phone switches to multipath communication mode, then the bandwidth and delay performance improve, but the device complexity increases
Solution Approach 1:
The patent implements feedback by continuously measuring the local delay time and comparing it against a predetermined threshold. This feedback mechanism enables the system to dynamically decide when to switch between single-link and multipath communication modes based on real-time performance degradation, thereby managing device complexity through intelligent, data-driven decision-making rather than constant complex operation.
3Measurement precision
If the mobile phone uses RTT or packet loss rate to detect link deterioration, then the detection accuracy is improved, but the response time worsens due to long detection delay
Solution Approach 1:
The patent extracts the essential timing information from the complete RTT measurement process by focusing only on the local delay time component (time from packet transmission request to actual transmission start or packet reception). This extraction provides sufficient accuracy for detecting link deterioration while dramatically reducing the measurement time, as it eliminates the need to wait for round-trip acknowledgment signals.
4Reliability
If the mobile phone waits for RTT measurement to detect link deterioration, then the detection reliability is improved, but the productivity deteriorates due to prolonged single-link mode operation
Solution Approach 1:
The patent applies preliminary action by continuously monitoring local delay time and comparing it against a predetermined threshold before significant link deterioration occurs. This proactive approach maintains detection reliability through consistent measurement while improving productivity by enabling early switching to multipath communication mode, thus preventing prolonged periods of degraded bandwidth utilization.
Data Source
AI summary
A wireless communication device including two wireless transceivers and a controller is provided. The first and second wireless transceivers provide a first connection and a second connection for wireless transmission and reception using a first wireless technology and a second wireless technology, respectively. The controller determines a first period of time from reception of a request for transmitting a packet transmission of a data flow by the first wireless transceiver to a start of the packet transmission over the first connection via the first wireless transceiver, or a second period of time from reception of the request for transmitting the packet of the data flow by the first wireless transceiver to reception of the packet by a router, and activates a multipath communication protocol, based on the first or second period of time, for transmitting subsequent packets of the data flow over both the first and second connections.