Abstract: Methods for mitigating radio de-sense between co-located radios for digital wireless communication systems for railroads. One of the co-located radios handles application-context traffic that may, at times, have higher priority wireless traffic on a first channel that is centrally managed. It is “protected” from radio de-sense caused by transmissions of a second radio on a second channel that is not centrally managed or synchronized with the first channel. The protecting radio learns the ID of the protected radio, determines when the protected radio might receive wireless packets of higher priority on the first channel and inhibits transmissions on the second channel during these times.

Abstract: A wireless train control network is adapted for forwarding data between a remote radio in an EOT unit and remote radio at the head of train using the base stations of the wireless train control network. A base station's current table of base station radios and remote radios that it hears or has a connection is distributed to neighboring base stations by a routing information exchange application. Tables are sent to and received from the application using a messaging service of the wireless train control network. A base station builds from the tables of neighboring base stations a route to a remote radio to which it is not connected, and forwards wireless data packets received for it by transmitting it to another base station radio.

Abstract: Methods and apparatus for detecting of spoofing or jamming activities near a train or other railroad assets uses a message sent from each of a plurality of base stations receiving a wireless packet transmitted by a radio of a railroad asset that reports the PNT information determined by the radio using GNSS and a timestamp for the time of arrival of wireless packet at the base station. The position of the asset is then calculated based on the time arrival of the wireless packet at each base station and compared to the reported position. A warning is generated if the difference exceeds a predetermined threshold.

Abstract: A wireless train control network is adapted for forwarding data between a remote radio in an EOT unit and remote radio at the head of train using the base stations of the wireless train control network. A base station's current table of base station radios and remote radios that it hears or has a connection is distributed to neighboring base stations by a routing information exchange application. Tables are sent to and received from the application using a messaging service of the wireless train control network. A base station builds from the tables of neighboring base stations a route to a remote radio to which it is not connected, and forwards wireless data packets received for it by transmitting it to another base station radio.