Do some part of phd remotely

I have following situation. No good quality phd is available in my country (field: computer Science). On the other hand leaving my country for too long is also a little bit difficult for me mainly for family situation. My question is: is it not possible that I negotiate somehow with possible supervisors etc. that I do some part of my Phd remotely? Or say I visit the University for 6 month, then next 6 month I will spend in my country, etc. Or similar arrangements. I know sometimes they call such programs also Sandwich phd programs. Field is computer science so I don't need to be there in some "lab" all the time. Do you know if this is possible? And where/how can I find such programs? Who do I have to "negotiate" it with and how?