CSFB method was adopted to realize voice business exist fallback failure and delay problems in LTE network. The LTE network CSFB optimization strategy based on signalanalysis is presented

precise positioning CSFB fallback failures and delay too long through the signaling flow split method

signaling trace analysis method

and gives specific solutions. Experimentalresults show that the strategy can effectively improve fallback success rate and reduce the time delay

thus improved the optimization efficiency.