Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-07-19
2011-07-19
Desir, Pierre-Louis (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S432100, C455S436000, C455S439000
Reexamination Certificate
active
07983679
ABSTRACT:
A communication system provides for an active handoff of a voice call between a packet switched network and a circuit switched network. An active handoff from the packet switched network to the circuit switched network is accomplished by multicasting the call over forward links of both networks during the handoff. An active handoff from the circuit switched network to the packet switched network is accomplished by multicasting the call over reverse links of both networks during the handoff. The former handoff further may be facilitated by routing the call for each network through a same packet data control switch, and the latter handoff further may be facilitated by routing the call for each network through a same mobile switching center. In order for a subscriber unit to operate concurrently in both networks, the subscriber unit may comprise multiple transceivers or a single transceiver that is rapidly switched between the networks.
REFERENCES:
patent: 5487174 (1996-01-01), Persson
patent: 5778338 (1998-07-01), Jacobs et al.
patent: 6141353 (2000-10-01), Li
patent: 6400946 (2002-06-01), Vazvan et al.
patent: 6721565 (2004-04-01), Ejzak et al.
patent: 6741695 (2004-05-01), McConnell et al.
patent: 6795444 (2004-09-01), Vo et al.
patent: 6944150 (2005-09-01), McConnell et al.
patent: 6996079 (2006-02-01), Bergenwall et al.
patent: 7010300 (2006-03-01), Jones et al.
patent: 7197307 (2007-03-01), Kirla
patent: 7260399 (2007-08-01), Oh et al.
patent: 7295843 (2007-11-01), Ejzak et al.
patent: 7359347 (2008-04-01), Ahmavaara et al.
patent: 2002/0066011 (2002-05-01), Vialen et al.
patent: 2002/0102962 (2002-08-01), Grinn et al.
patent: 2003/0031160 (2003-02-01), Gibson Ang et al.
patent: 2003/0193911 (2003-10-01), Zhao et al.
patent: 2004/0199637 (2004-10-01), Li et al.
patent: 2004/0240430 (2004-12-01), Lin et al.
patent: 2004/0246990 (2004-12-01), Krishnamurthi et al.
patent: 2004/0259549 (2004-12-01), Ejzak et al.
patent: 2005/0245261 (2005-11-01), Ejzak
patent: 2006/0019659 (2006-01-01), Rosenberg et al.
patent: 2006/0083199 (2006-04-01), Yang
patent: 2006/0109817 (2006-05-01), Ramanna et al.
patent: 2006/0109818 (2006-05-01), Ramanna et al.
patent: 2006/0109819 (2006-05-01), Marin et al.
patent: 2006/0126564 (2006-06-01), Ramanna et al.
patent: 1182900 (2004-04-01), None
patent: 2005297591 (2004-10-01), None
patent: 0189251 (2001-11-01), None
patent: 2004082219 (2004-09-01), None
Kahl, Marcus: “Supplementary European Search Report”, European Patent Office, Munich, Germany, completed: Jun. 4, 2010, mailed Jun. 15, 2010, all pages.
Balasuriya Senaka
Marin James S.
Desir Pierre-Louis
May Steven A.
Motorola Mobility, Inc.
Schwartz Joshua
LandOfFree
Method and apparatus for inter-system active handoff of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for inter-system active handoff of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for inter-system active handoff of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2705689