CAJ | 학술논문

CSFB是一种TD-LTE话音解决方案，其基本思想是TD-LTE用户通过从TD-LTE网络回落到GSM/TD-SCDMA电路域以进行话音业务接续。本文首先介绍了CSFB话音解决方案的关键技术，重点分析了用户被叫流程时回落的重点和难点。其次介绍了MTRF关键技术及其应用场景。最后提出通过MTRF技术可解决CSFB方案的被叫回落异常问题，并分析部署MTRF技术对GSM/TD-SCDMA/TD-LTE融合网络影响。
CSFB시일충TD-LTE화음해결방안，기기본사상시TD-LTE용호통과종TD-LTE망락회락도GSM/TD-SCDMA전로역이진행화음업무접속。본문수선개소료CSFB화음해결방안적관건기술，중점분석료용호피규류정시회락적중점화난점。기차개소료MTRF관건기술급기응용장경。최후제출통과MTRF기술가해결CSFB방안적피규회락이상문제，병분석부서MTRF기술대GSM/TD-SCDMA/TD-LTE융합망락영향。
The CSFB in TD-LTE enables the provisioning of voice by reuse of CS infrastructure when the UE is served by TD-LTE. A CSFB terminal, connected to E UTRAN may use GERAN or UTRAN to connect to the CS domain. Firstly, the paper introduced key technology of CSFB, focusing on the mobile terminating call procedures for the CSFB. Secondly, it introduced the application and key technology of MTRF. Finally, the paper proposed that using the MTRF can solve the incorrect fallback of CSFB, and analyzed the impact on the converged network of GSM/TD-SCDMA/TD-LTE when deploy MTRF.