Patent ID: 9479926
Filing Date: 2016-10-25
CPC Classification: H04W

Claim Text:
1. A method for obtaining an international mobile equipment identity (IMEI) of a mobile station, comprising: sending, by a base station controller, a request message to a core network device, wherein the request message is an attach request message or the request message is a routing area update request message; receiving, by the base station controller, an accept message of the request message sent by the core network device, wherein the accept message is an attach accept message or the accept message is a routing area update accept message; sending, by the base station controller, an identify request message to the mobile station for obtaining the IMEI, wherein a frame sequence number of the identify request message is the same as a frame sequence number of the accept message; receiving, by the base station controller, an identify response message sent by the mobile station; and re-sending, by the base station controller, the request message to the core network device, wherein a frame sequence number of the re-sent request message is the same as a frame sequence number of the identify response message.