Inter-access network topology discovery

Details Inter-access network topology discovery Inter-access network topology discovery

2011-05-10

2011-05-10

Shah, Chirag G (Department: 2477)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

Reexamination Certificate

active

07940726

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.

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