Reducing handover frequency error

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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C370S332000, C370S333000, C375S136000, C375S137000, C375S147000, C375S344000, C455S436000, C455S437000, C455S438000, C455S439000, C455S440000, C455S196100, C455S442000

Reexamination Certificate

active

07580390

ABSTRACT:
Frequency estimation information obtained when a wireless communication device (WCD) is in one wireless communication system, such as frequency error or offset information, may be translated to a corresponding frequency error in another system, thereby allowing the WCD to perform a handover to the other system with reduced initial frequency error. As a result, the acquisition time involved in acquiring a signal in the other system may be significantly reduced.

REFERENCES:
patent: 5276706 (1994-01-01), Critchlow
patent: 5432819 (1995-07-01), Mui
patent: 5691974 (1997-11-01), Zehavi et al.
patent: 5784695 (1998-07-01), Upton et al.
patent: 6078570 (2000-06-01), Czaja et al.
patent: 6278725 (2001-08-01), Rouphael et al.
patent: 6463266 (2002-10-01), Shohara
patent: 6546252 (2003-04-01), Jetzek et al.
patent: 6564067 (2003-05-01), Agin
patent: 6567666 (2003-05-01), Czaja et al.
patent: 6584090 (2003-06-01), Abdelgany et al.
patent: 6587446 (2003-07-01), Sakar et al.
patent: 6760599 (2004-07-01), Uhlik
patent: 6775261 (2004-08-01), Banister
patent: 6845238 (2005-01-01), Muller
patent: 6956895 (2005-10-01), Vihriala
patent: 6996158 (2006-02-01), Bradley
patent: 7027535 (2006-04-01), Aftelak
patent: 0665659 (1995-01-01), None
patent: 1104974 (2000-11-01), None
patent: 1126637 (2001-08-01), None
patent: 0057601 (2000-09-01), None
patent: 0154442 (2001-01-01), None
patent: 0178322 (2001-10-01), None
International Search Report—PCT/US02/037427, International Search Authority—European Patent Office—Apr. 4, 2003.
International Preliminary Examination Report—PCT/US02/037427, IPEA/US—Aug. 12, 2004.
Garcia-Luna-Aceves, J.J., et al, “A Multicast Routing Protocol for Ad-Hoc Networks,” Infocom '99, 18th Annual Joint Conference of the IEEE Computer and Communications Societies, Proceedings, vol. 2, pp. 784-792, Mar. 21-25, 1999.

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