Patent ID: 9301195
Filing Date: 2016-03-29
CPC Classification: H04W

Claim Text:
1. A method for performing a registration procedure of a mobile terminal in a mobile communications network conforming to GSM standards which compensates for a time delay on a communication channel between a base station and a base station control unit, the method comprising: providing a communications link between the base station and the mobile terminal; disposing the base station topographically between the communications link and the communications channel; providing a section of the communications channel that is subject to the time delay between the base station and the control unit; providing a device in the communication channel between the base station and the section of the communication channel that is subject to the time delay; storing, by the device, a request reference transmitted in and identifying a request message from the mobile terminal during each initiation of a registration procedure, wherein the registration procedure is an immediate assignment procedure, and the request message is a CHAN RQD message; receiving, by the device, a reply message transmitted from the control unit in response to the request message, wherein the reply message contains the request reference and is an IMM ASSIGNMENT message; and replacing the request reference in the received reply message with a last request reference stored by the device from a latest repetition of the request message transmitted from the mobile terminal and received by the device.