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Wireless data offload system

  • US 20160219251A1
  • Filed: 09/27/2013
  • Published: 07/28/2016
  • Est. Priority Date: 09/27/2013
  • Status: Abandoned Application
First Claim
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1. A system for transferring video surveillance data between a mobile communication unit of a public transportation vehicle and a wayside communication unit, said system comprising:

  • a mobile communication unit and a wayside communication unit, wherein;

    the mobile communication unit is arranged to obtain video surveillance data from one or more video surveillance cameras arranged in functional connection with the mobile communication unit, the mobile communication unit including;

    a video recorder arranged to buffer at least a part of the obtained video surveillance data before transmission to the wayside communication unit;

    at least one encoder arranged to encode said obtained video surveillance data into a stream format compatible with a wireless standard, anda transmitter arranged to transmit the encoded video surveillance data stream in accordance with said wireless standard to the wayside communication unit; and

    the wayside communication unit includes a receiver arranged to receive the encoded video surveillance data stream in accordance with said wireless standard, and wherein the wayside communication unit is arranged to;

    monitor whether a transmission signal from the mobile communication unit is available;

    check that a quality of the transmission signal is sufficient for transmitting the encoded video surveillance data stream and, if affirmative send an offload request to the mobile communication unit; and

    wherein in response to receiving an acknowledgement from the mobile communication unit, the wayside communication unit is arranged to;

    start reception of the encoded video surveillance data stream by synchronising into the transmission signal; and

    forward the encoded video surveillance data stream to a data target for decoding.

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