Patent ID: 8493944
Filing Date: 2013-07-23
Classification: H04W

Abstract:
1. A position managing server that manages a position of a mobile terminal wirelessly connected to an access point of a network, comprising: a processor, memory coupled to and accessible by the processor, and program instructions stored in the memory and executable by the processor for implementing: an access point group table in which a plurality of access points are grouped into a plurality of groups each including at least one access point, one group of access points corresponding to a current position of the mobile terminal; a terminal position table in which the groups and the mobile terminal are correlated; a registering unit that registers the current position of the mobile terminal in the terminal position table based on an identifier of the mobile terminal and an identifier of a connected access point that is an access point to which the mobile terminal is connected; a changing unit that changes, when the connected access point does not belong to any of the groups in the terminal position table, the position registered in the terminal position table to the current position based on the access point of the current connection destination; and a notifying unit that, when the terminal changes connection destinations to another of the access points belonging to a different group while maintaining connection, notifies a call control server of a group to which the other of the access points belongs, and time of change of the connection destinations, wherein the position managing server is part of a wireless Internet Protocol telephone system.