Patent ID: 8311545
Filing Date: 2012-11-13
Classification: H04W

Abstract:
1. A method performed by a mobile system, the method comprising: storing system information from a handover previously performed by the mobile system between a macrocell and a target femtocell; estimating based on said system information when said mobile system enters again within a coverage area of said target femtocell; recognizing said coverage area based on said system information; scanning for said target femtocell prior to performing handover again with said target femtocell; synchronizing a latest system information of the target femtocell by receiving control information from the target femtocell; and if the macrocell cannot obtain the system information of the target femtocell requested by the mobile system, the mobile system synchronizes with the target femtocell and receives on a mobile system downlink control channel while maintaining a current service connection to the macro cell, otherwise, receiving control information from the macrocell while maintaining a current service connection to the macrocell and while concurrently receiving control information directly from the target femtocell.