4G/5G通信を用いる映像転送のリアルタイム性についての考察

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  • Consideration of real-time video transmission using 4G/5G communication

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<p>5G communications are characterized by eMBB (enhanced Mobile Broad Band), URLLC (Ultra Reliable and Low Latency Communication), and mMTC (Massive Machine Type Communication). These communication areas are expected to be applied to industrial fields in the future. In network-based teleoperation systems, 5G has the potential to realize stress-free real-time video transmission by a camera on a mobile robot and robot control from a base station. To evaluate the communication performance of 4G and 5G, this study first measured and compared the delay time per packet and the time required for data transfer in the transfer of random data equivalent to the image size. The measurement results showed that the amount of data that can be transferred within the allowable transfer time for remote operation of a mobile robot is about 2K for 5G and about HD for 4G. Future tasks will be to show the evaluation of the usefulness of 4G/5G communication by comparing the transfer time of random data including retransmission requests by TCP/IP and the video transmission time including codec processing time.</p>

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