Patent ID: 9380504
Filing Date: 2016-06-28
CPC Classification: H04W

Claim Text:
1. A method for changing an access cell, the method applies to a user equipment (UE), the method comprising: determining, by the UE, that the UE leaves coverage of a first radio network; sending, by the UE, to a base station, a first message that reports an A receiving, by the UE, a second message which is sent by the base station according to the first message and used to instruct the UE to perform inter-system measurement; sending, by the UE to the base station, a state information message comprising state information in a third message and a measurement result for a second cell of a second radio network, wherein the state information comprises an access state of the UE, and wherein the measurement result for the second cell is used for the base station instructing the UE to initiate a handover from the first cell to the second cell, wherein the access state of the UE is a dual-camped state that indicates the UE currently accesses the first cell of the first radio network and the second cell of the second radio network; receiving, by the UE, a handover command that is sent by the base station according to the state information and that instructs the UE to initiate a handover of service in the first cell from the first cell to the second cell; and when the UE is in a connected state in the first cell of the first radio network, initiating, by the UE, the handover of the service in the first cell from the first cell to the second cell.