Enhanced system acquisition while roaming

摘要

Various methods, apparatus, and computer readable media are disclosed for enhanced system acquisition while a user equipment (UE) is roaming. The UE may detect roaming from a coverage area associated with a first public land mobile network (PLMN) supporting hybrid voice and data to a coverage area associated with a second PLMN without support for hybrid voice and data. In response to the detection, the UE may store data corresponding to the second PLMN such that the second PLMN is a registered PLMN (RPLMN). The UE may initiate system acquisition, wherein the system acquisition includes searching for the RPLMN prior to searching for any other PLMN. The other PLMN may include a home PLMN (HPLMN). The coverage area associated with the first PLMN may be within a first country, and the coverage area associated with the second network may be within a second country different from the first country.

主权项

1. A method of wireless communication, the method comprising:
detecting roaming from a coverage area associated with a first public land mobile network (PLMN) supporting hybrid voice and data into a coverage area associated with a second PLMN without support for hybrid voice and data, wherein the second PLMN is configured to support circuit-switched fallback (CSFB) operation, and wherein roaming into the coverage of the second PLMN is detected prior to initiating acquisition of the second PLMN; in response to the detecting, storing data corresponding to the second PLMN such that the second PLMN is a registered PLMN (RPLMN); and initiating system acquisition, wherein the system acquisition comprises searching for the RPLMN prior to searching for any other PLMN, wherein the hybrid voice and data comprises a first software stack for data services over a packet-switched network and a second software stack for voice services over a circuit-switched network concurrent with the data services, and wherein the CSFB operation comprises a third software stack for data services over the packet-switched network and for voice services over the circuit-switched network concurrent with the data services.