Inter-access network topology discovery
US7940726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2009 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.