Relay Device Timing Control for Collision Avoidance
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Solution Overview
Problem
Conventional communication systems face reliability and real-time performance issues due to increased load on relay apparatuses when multiple communication terminals transmit sensor information simultaneously, leading to collisions, buffer overflows, and delayed acknowledgments.
Innovation Solution
A relay device with a communication unit that receives information from multiple terminals and a deriving unit that determines timing information for transmission based on the total number of received information pieces within a predetermined time period, transmitting this information to the terminals to manage transmission timing and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If multiple communication terminals transmit sensor information simultaneously to a relay apparatus, then the real-time performance is improved, but the communication reliability deteriorates due to collisions and buffer overflows
Solution Approach 1:
The relay apparatus performs preliminary actions by deriving and notifying timing information to communication terminals before simultaneous transmissions occur. This allows terminals to adjust their transmission timing in advance, preventing collisions and buffer overflows while maintaining real-time performance.
Solution Approach 2:
The relay apparatus implements feedback by notifying communication terminals of derived timing information based on the total number of received information pieces. This feedback loop enables terminals to adjust their transmission timing dynamically, resolving the contradiction between real-time performance and communication reliability.
2Productivity
If the relay apparatus processes information from multiple terminals simultaneously, then the data collection efficiency is improved, but the device load increases causing buffer overflows
Solution Approach 1:
The relay apparatus performs preliminary derivation of timing information based on the total number of received information pieces before processing all data. This preliminary action allows the system to manage device load proactively while maintaining efficient data collection from multiple terminals.
3Ease of operation
If communication terminals transmit information without timing control, then the ease of operation is improved, but collisions and buffer overflows occur reducing system reliability
Solution Approach 1:
Communication terminals perform self-service by automatically adjusting their transmission timing based on timing information notified by the relay apparatus. This eliminates the need for complex centralized scheduling while preventing collisions, maintaining ease of operation alongside improved reliability.
Data Source
AI summary
A relay device according to an embodiment includes a communication unit that receives information, transmitted from a plurality of communication terminals, and transmits the received information to a server; and a deriving unit that, in accordance with the total number of pieces of information received by the communication unit between a first point and a second point that elapses a predetermined time period, derives the timing information related to the transmission timing of information transmitted after the second point by at least one communication terminal among the communication terminals, and the communication unit transmits the timing information to the at least one communication terminal.