Methods and apparatus for improving a call fallback user experience

摘要

Certain aspects of the present disclosure relate to techniques for improving a circuit-switched fallback (CSFB) user experience. In aspects, methods and systems for autonomously returning a user equipment (UE) from a 2G (2nd generation)/3G (3rd generation) network to an LTE (Long Term Evolution) network are provided. The UE may store a flag to note whether a current circuit switched (CS) call in the 2G/3G network is a result of a CSFB. The UE, in response to detecting a termination of the current CS call in the 2G/3G network and determining that the terminated call was a CSFB call (e.g., from the status of the flag), may trigger a mobility mechanism to autonomously return the UE to the LTE network.

主权项

1. A method for wireless communications, comprising:
receiving at a user equipment (UE), an indication that a call in a first radio access network (RAN) has ended; detecting that a PLMN (Public Land Mobile Network) serving the UE is included in a list of PLMNs maintained by the UE; in response to the detecting:
determining that the UE left service in a second RAN to establish the call in the first RAN; andin response to the receiving and the determination, taking one or more actions by the UE to autonomously return to the second RAN, wherein a combination of detecting that the call in the first RAN has ended and that the UE left service in the second RAN to establish the call in the first RAN triggers the one or more actions by the UE,wherein taking the one or more actions comprises sending a request to the first RAN to release a connection with the UE.