Patent ID: 9451505
Filing Date: 2016-09-20
CPC Classification: H04W

Claim Text:
1. A method of wireless communications, comprising: detecting, by a user equipment (UE), one or more instances of failure during a pre-registration procedure with a first radio access network (RAN) through an air interface of a second RAN as part of an optimized handover process, wherein one instance of the one or more instances of failure comprises a dedicated bearer establishment failure and wherein the detecting further comprises determining whether the UE has handed over to an evolved high rate packet data (eHRPD) network; determining, by the UE, whether the one or more instances of failure include an instance of failure at the air interface of the second RAN; and performing, by the UE, one or more pre-registration retry processes with the first RAN through the air interface of the second RAN based on the detected one or more instances of failure when the one or more instances of failure do not include an instance of failure at the air interface of the second RAN, wherein the performing further comprises: wherein the pre-registration procedure includes one or more check points; and wherein the performing comprises performing a portion of the pre-registration procedure from a point after the one or more check points at which the failure is detected, the pre-registration procedure being barred from restarting until after expiration of a timer associated with the detected failure.