Sorry, I was in a hurry and didn’t explain the problem quite well. U r right, there is no HO between 3G and 2G. What I meant is the SGSN context transfer between both SGSNs after RA request.
Now, is it favorable to:
-keep MS on 2G after reselection & open the way for another 3G reselection when conditions are better?
-keep MS on 3G and don’t perform 2G reselection?