A Low Latency Transmission Control for Multi-link WLAN

Abstract

Stable wireless connections are required for ITS applications employing real-time video streaming. It is effective to enable multiple links which work on different channels in order to make WLAN connections stable. Therefore, we propose a transmission control scheme for multi-link WLAN assuming the real-time video streaming. In our proposed scheme, radio units, which have different types of transmission queues, transmit a video streaming collaboratively with the minimum support of a coordinator. A multi-radio receiver controls A-MPDU transmissions of the radio units using Block-Acks including a shared scoreboard context to avoid duplicated retransmissions. Our simulation results show that the proposed scheme reduces both average latency and maximum latency of video streaming traffic significantly when wireless link conditions change dynamically.