U need the following documents to apply for ur visa.
ur husband's salary certificate.
Noc from ur husband's employer.
ur Husband's QID copy.
ur and ur husband's passport copy.
Attested (Indian foriegn affairs-Delhi) copy of ur marriage certificate.(here also need attestation by Indian embassy and expatriate affairs.-for attestation u need original marriage certificate here. )
if ur husband have all these documents with him he can directly go to gharraffa emigration and submit the application.ur husband's company's PRO also can do it.
Fees Qrs.200/-
then u will get family visit visa.
ur entry visa's validity up to 1 month.
after ur entry in qatar u wants to go to medical check up .
then u can get 5 months more.fees Qrs.200/- per month.
u can stamp it in ur passport monthly or 5months together.
Then ur husband can apply a permanent visa for u in this period.It can start immediate after ur entry here or after five months.

For permanent visa also u wants to follow up the same procedure.(like new application)
ur husband need minimum 7000/- riyal salary.(Minimum 3months bank statement must).
Electricity and water bill(it should be in the name of ur husband.) if ur husband's company providing company's accommodation to him give proof of it, then no need for electricity bill.
ur medical check up validity is for 6 months. if u will get permanent visa with in this period u don't want to under go the medical check up again.
goodluck
if u need some more information regarding this, don't hesitate to send a PM to me.