Communication Device Control Frame Transmission Period Adaptation
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Solution Overview
Problem
Existing communication technologies, such as IEEE802.15.4, face challenges in maintaining synchronous communication while minimizing power consumption and network load, as the longer wakeup frame transmission period in asynchronous communication modes leads to increased power consumption and network load, and shorter periods may result in data frame transmission failures due to synchronization misalignment.
Innovation Solution
A communication device and method that continuously transmits control frames during a predetermined period prior to data frame transmission, adjusting the control frame transmission period based on past transmission results, to maintain synchronization while reducing the total control frame transmission time, by extending the period when transmission fails and shortening it when successful.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the wakeup frame transmission period is shortened in synchronous communication mode, then power consumption and network load are reduced, but data frame transmission may fail due to synchronization misalignment
Solution Approach 1:
The transmitter continuously transmits control frames (wakeup frames) during a predetermined control frame transmission period before the actual data frame transmission. This preliminary transmission of control frames ensures that the receiver is properly synchronized and ready to receive the data frame, thereby maintaining transmission reliability even when the overall transmission period is shortened
Solution Approach 2:
The transmission process is divided into two distinct segments: a control frame transmission period and a data frame transmission period. The control frame transmission period is set to be shorter than traditional asynchronous modes, reducing power consumption, while still maintaining sufficient synchronization through the segmented control frame transmissions
2Reliability
If the wakeup frame transmission period is lengthened to ensure synchronization, then data frame transmission reliability is improved, but power consumption and network load increase
Solution Approach 1:
Instead of continuous transmission, the transmitter sends control frames periodically at specific intervals within the control frame transmission period. This periodic transmission pattern maintains synchronization reliability by ensuring control frames are sent at appropriate intervals while avoiding unnecessary continuous transmission that would increase power consumption
Solution Approach 2:
The control frames are transmitted in advance during the control frame transmission period, performing the synchronization action preliminarily before the actual data frame transmission. This allows the system to use a shorter overall transmission period while maintaining reliability through the preliminary synchronization established by the control frames
3Productivity
If the control frame transmission period is shortened, then network load is reduced, but the probability of successful synchronization decreases
Solution Approach 1:
The transmission process is segmented into control frame transmission and data frame transmission phases. Within the control frame phase, multiple control frames are transmitted at optimized intervals, providing sufficient synchronization opportunities while keeping the overall control frame transmission period short, thus maintaining network efficiency
Solution Approach 2:
The system dynamically adjusts the control frame transmission period and interval parameters based on communication conditions. By optimizing these parameters, the system achieves sufficient synchronization probability while minimizing the control frame transmission period, thereby improving overall network efficiency
Data Source
AI summary
There is provided a communication device including (1) a communication controller that causes a control frame for synchronization to be transmitted during a control frame transmission period to a transmission destination of a data frame such that the data frame is transmitted after transmission of the control frame has completed, (2) a transmission section that continuously transmits the control frame for the control frame transmission period, (3) a reception section that receives a frame transmitted by a communication device of the transmission destination, (4) a control frame transmission information saving section that saves information for respective destination addresses, (5) a control frame transmission controller that references the information saved in the control frame transmission information saving section, and determines the control frame transmission period for when to transmit the next control frame, based on the control frame transmission period from the past and the data frame transition result.