With the keeping spread of TD-SCDMA network construction

the reselection between 2G and 3G is frequent

the long reselection time between 2G and 3G is an important factor which affects the network call completing rate.How to cut down the reselection time

improve the problem that can not reach the subscriber and advance the consumer’s feeling is a very important task to the network combination of 2G and 3G.TD/GSM semi fast return technology proves a method that TD subscriber can return to TDSCDMA network quickly.We can only change the TD system and subscribers to carry out the same effect of Rel-6 and without cosmically upgrading the existing GSM network.