Patent ID: 9179387
Filing Date: 2015-11-03
Classification: H04W

Abstract:
1. A method of performing vertical handover of a wireless voice connection, which is part of a voice connection set up between a portable communication device and another communication device, said handover being performed for the portable communication device between a local area wireless network, having an area comprising at least one building, and a wireless wide area network, comprising the steps of: measuring a set of handover factors for the wireless connection to the portable communication device, the handover factors comprising: determining a dynamic handover border based on the current position, speed and direction vector of the portable communication device and the structural layout of the interior of the building, the handover border having a distance to an insufficient coverage area that is large enough to ensure that a handover mechanism is completed before the insufficient coverage area is reached for the current speed and direction vector of the portable communication device; learning atypical movement patterns of certain individuals; ignoring the learned atypical movement patterns of the certain individuals by not performing a handing over when the handing over would otherwise be performed; and handing over the connection from the local area wireless network to the wireless wide area network or from the wireless wide area network to the local area wireless network when the portable communication device reaches the handover border, wherein handovers for different users are differentiated at potentially different times based on past movement patterns of individual users in correlation to time.