he can call you in visist visa which requires your passport copy, marriage cetificate, Sponser letter stating his salary, attested in your country embassy here in qatar. a visit visa will be issued for 1 month which can be converted into Residence permit withoin that mont if you plan to stay here permanently but if you are coming here for short after one month the visa can be extended upto 6 months for which you have to go for medical test here in qatar in medical commision, this all paperwork processing for visa can be done in Gharrafa Immigration.