Patent ID: 6992999

Claim:
A method for transmitting information about a synchronous system to a mobile station in an asynchronous mobile communication system including at least one mobile station and at least one asynchronous radio network, the method comprising the steps of: a) by the asynchronous radio network, acquiring handover-related information from a plurality of neighboring synchronous systems; b) determining to handover based on a measurement value from the mobile station; c) if a system for a handover is the synchronous system, by the asynchronous radio network, transmitting a first message including activation time information and long code state information to the mobile station; and d) after receiving the activation time information and the long code state information, by the mobile station, making use of the long code state information based on the activation time information, wherein the first message further includes an inter-system handover message that is transmitted to the mobile station at the time of the handover from one system to the other system, and the inter-system handover message is transmitted to the mobile station by inserting the long code state information into a first subfield within an inter-system message included in the inter-system handover message in order to provide the mobile station with the long code state information wherein the first subfield is a NOTE 2 field including the long code state information, the NOTE 2 field included in a message filed within the inter-system message.