Abstract

As the mainstream wireless LAN technology, Wi-Fi can achieve fast data transfer. With the subway moving in a high speed, video data transmission between the metro and the ground is achieved through Wi-Fi technology. This paper aims at solving the Caton problem caused by switching packet loss in the process of playing real-time video on the train terminal, and proposes matrix-type packet loss compensation scheme. Finally, the feasibility of the scheme is verified by experiments.

Highlights

  • In recent years, the problem of traffic congestion has seriously affected and restricted the cities' development in China [1]

  • Rail transit has become the primary choice for most urban trips [2]

  • Wi-Fi technology, able to meet the requirements of moving data transmission for the terminal, the technology itself has some limitations, such as, a single Wi-Fi has a limited coverage, Wi-Fi's signal strength is not stable and so on

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Summary

Introduction

The problem of traffic congestion has seriously affected and restricted the cities' development in China [1]. Passengers' needs for the Metro to play real-time video information are increasing [3]. This paper is just in this background and proposes a real-time wireless video transmission scheme. This article uses the mainstream Wi-Fi technology for real-time video data transmission. Wi-Fi technology, able to meet the requirements of moving data transmission for the terminal, the technology itself has some limitations, such as, a single Wi-Fi has a limited coverage, Wi-Fi's signal strength is not stable and so on. Limited coverage cannot meet the needs of continuous receiving video data in the process of subway moving. Now is to deploy multiple wireless AP next to the subway lines to cover the entire range of traffic section

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