| US 7,555,299 B2 | ||
| Mobile communication system with position detection to facilitate hard handoff | ||
| Samir S. Soliman, San Diego, Calif. (US) | ||
| Assigned to QUALCOMM Incorporated, San Diego, Calif. (US) | ||
| Filed on Jan. 26, 2006, as Appl. No. 11/342,089. | ||
| Application 09/954910 is a division of application No. 09/187939, filed on Nov. 06, 1998, granted, now 6,321,090. | ||
| Application 11/342089 is a continuation of application No. 09/954910, filed on Sep. 17, 2001, granted, now 7,031,171. | ||
| Prior Publication US 2008/0214192 A1, Sep. 04, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04Q 7/20 (2006.01); H04B 1/00 (2006.01) | ||
| U.S. Cl. 455—438 [455/440; 455/456.1] | 19 Claims |
| 1. A base station controller for facilitating hard handoff comprising:
a position database configured to store information corresponding to locations of a plurality of handoff regions comprising
at least one handoff region selected from the group consisting of intersystem handoff regions and intrasystem handoff regions;
and
a selector bank subsystem configured to initiate tracking of the position location of a mobile unit upon detection of a pilot
signal corresponding to a region near a handoff region of the plurality of handoff regions, without regard to pilot signal
strength, to track the location of the mobile unit using at least partially a GPS system, to determine when the mobile unit
enters the handoff region according to the stored information and the location of the mobile unit, and to initiate handoff
when the mobile unit enters the handoff region.
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