Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2010-11-22
2011-10-25
Chou, Albert T (Department: 2471)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C455S456100
Reexamination Certificate
active
08045526
ABSTRACT:
A method for selecting a wireless coverage sector to serve a mobile station, such as in response to a handoff request that designates a sector-identifier that represents two or more possible sectors. A serving radio access network (RAN) may identify potential sectors in the region and may then select the sector whose azimuth is closest to the geographic bearing of the mobile station from the sector's base station. Further, in the event of a tie between two or more sectors or in other circumstances, the RAN may also take into consideration how close the mobile station is to various base stations, such as selecting the sector to whose base station the mobile station is closest. In a system that uses neighbor lists to govern handoff, the invention can help to facilitate handoff in a scenario where a mobile station requests handoff to a sector not listed in the mobile station's neighbor list.
REFERENCES:
patent: 6950664 (2005-09-01), Chen et al.
patent: 7881263 (2011-02-01), Vargantwar et al.
patent: 2004/0067759 (2004-04-01), Spirito et al.
patent: 2008/0293435 (2008-11-01), Maher et al.
Canjeevaram Ashvini G.
Oroskar Siddharth S.
Rai DeveshKumar N.
Shetty Manoj
Vargantwar Sachin R.
Chou Albert T
Sprint Spectrum L.P.
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