hi, i would like some expert information from the railway community regarding likely candicates for information passing between trains and a control centre, as i am currently working on my dissertation for my msc in critical software engineering degree.
as part of the system i am building i aim to model in software a number of trains and a control centre. the aim is for the trains to communicate with the control centre simulataneously in a transaction.
A transaction is a number of related logical operations grouped together so as to become indivasable such as crediting a bank balance i.e. read balance, increment balance and finally write new balance - all seen as one operation - "credit account".
the help i need is to identify a feasable resource which the trains would like to use from the control centre. this would be something that the control centre has and that trains would like to use, some sort of information.
identifying this information without contriving it is proving an unexpected major headache.
thanks in advance
mark laird lancaster university