Communication Device Dynamic Response Waiting Time Adjustment
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Solution Overview
Problem
Existing communication technologies face inefficiencies in frame exchange due to prolonged waiting times for response acknowledgments, leading to power consumption issues and delayed processing in sensor networks.
Innovation Solution
A communication device with a response request determination unit, transmission unit, timer, reception state determination unit, communication processing deciding unit, and response reception check unit, which allows for dynamic adjustment of response waiting times and efficient frame exchange by distinguishing between received and unreceived frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication device waits for a response acknowledgment for a fixed response waiting time, then the transmission reliability is improved, but the processing efficiency deteriorates because any processing cannot be carried out until the next frame is transmitted
Solution Approach 1:
The patent applies dynamics by making the response waiting time adjustable rather than fixed. The communication control unit dynamically extends the response waiting time when a response frame is received but not correctly received, and shortens it when the response frame is correctly received. This dynamic adjustment resolves the contradiction by maintaining reliability through adequate waiting time while improving processing efficiency by reducing unnecessary waiting.
Solution Approach 2:
The patent changes the parameter of response waiting time based on reception status. The communication control unit modifies the response waiting time parameter according to whether the response frame is correctly received, transforming a static parameter into a variable one that adapts to communication conditions, thereby balancing reliability and processing efficiency.
2Reliability
If the communication device extends the response waiting time to ensure correct reception, then the reception reliability is improved, but the time efficiency deteriorates due to prolonged waiting periods
Solution Approach 1:
The response waiting time is dynamically adjusted based on the reception status of the response frame. When the response frame is correctly received, the waiting time is shortened to time efficiency. When it is not correctly received, the waiting time is extended to ensure reliable reception, thus resolving the contradiction between reception reliability and time efficiency.
Solution Approach 2:
The communication control unit uses feedback from the reception state determination unit to adjust the response waiting time. The feedback mechanism allows the system to learn from previous reception outcomes and optimize the waiting time parameter, improving reception reliability while minimizing time loss through adaptive control.
3Use of energy by moving object
If the communication device uses intermittent reception with short preambles, then the power consumption is reduced, but the boot-up time of the reception device becomes longer leading to extra power consumption
Solution Approach 1:
The patent changes the response waiting time parameter dynamically based on communication conditions and reception status. By adjusting this parameter, the system optimizes the balance between power consumption and boot-up time, reducing unnecessary waiting periods while ensuring reliable reception, thereby addressing the contradiction between energy efficiency and time efficiency in intermittent reception modes.
Data Source
AI summary
Provided is a communication device including: a response request determination unit that determines whether a response request is included, from content of a transmission frame; a transmission unit that carries out processing to transmit a frame; a timer that starts to measure a time period after transmission processing is completed; a reception state determination unit that determines whether a response frame is being received when a first time period is measured; a communication processing deciding unit that decides that the time period to be measured by the timer is to be extended by a second time period in when it has been determined that the response frame is being received, and decides that predetermined processing is to be carried out when it has been determined that the response frame is not being received; and a response reception check unit that checks whether the response frame is being received correctly.