The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Feb. 10, 2009
Magnus Olsson, Stockholm, SE;
Catherine Mulligan, Stockholm, SE;
Magnus Olsson, Stockholm, SE;
Catherine Mulligan, Stockholm, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The disclosure relates to building a topology map that can be used to provide a requesting wireless terminal with information relevant to its current location. Information on neighboring cells of different access networks is maintained in the topology map. An inter-access network (IAN) topology apparatus builds to topology map based on results of previous IAN session transfers such as handovers from one access network to a different access network. When the requesting wireless terminal currently accessing a current network makes a request for topology information, the IAN topology apparatus provides a list of cells of other than the current access network in the area of the requesting wireless terminal. The requesting wireless terminal uses the information to scan for cells of other access networks to potentially perform the IAN session transfer. The requesting wireless terminal conserves power by scanning only for accessible cells indicated to be in its area.