Systems and methods for interoperability positive train control
US8340056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L27/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for implementing communications in a railroad communications system having a base station radio and remote radios, the remote radios including a mobile radio and a wayside radio. The method includes assigning a common radio communications channel for allowing a remote radio to connect with the base station radio using a carrier sense multiple access (CSMA) communications protocol and assigning a local channel for allowing communications between the radio base station and the remote radios and between the remote radios, wherein communications on the local channel utilizes a selected one of fixed time division multiple access (FTDMA) and dynamic time division multiple access (DTDMA) communications protocols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.