Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-12-05
2006-12-05
Ho, Duc (Department: 2665)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S332000, C455S444000
Reexamination Certificate
active
07145890
ABSTRACT:
A method for carrying out an idle handoff from a macrocell to a microcell (picocell) in a hierarchical cell structure includes the steps of: a) allocating different frequency assignments (FA) to the macrocell and the microcell in a same service band, to construct the hierarchical cell structure; b) transmitting cell structure information of neighboring base stations and pseudo noise (PN) code from base station to mobile station; c) checking whether the mobile station is in the hierarchical cell by using the cell structure information of neighboring base station; and d) checking whether a value of the pseudo noise (PN) code is greater than T_ADD and greater than Ec/Io of the macrocell by periodically searching the pseudo noise (PN) code of the microcell, to carry out an idle handoff to the microcell, wherein the T_ADD represents a value of base station pilot strength required for the base station of neighboring set to be included in a candidate set, the Ec represents an pilot energy accumulated during one pseudo noise (PN) chip period, and the Io represents a total power spectrum density within a reception bandwidth.
REFERENCES:
patent: 5278991 (1994-01-01), Ramsdale et al.
patent: 5542098 (1996-07-01), Bonta
patent: 5548806 (1996-08-01), Yamaguchi et al.
patent: 5987332 (1999-11-01), Gettleman et al.
patent: 6085091 (2000-07-01), Yoo et al.
patent: 6141554 (2000-10-01), Choi
patent: 6178197 (2001-01-01), Froelich et al.
patent: 6771963 (2004-08-01), Cheng et al.
patent: 6873647 (2005-03-01), Tiedemann et al.
patent: 1212593 (1999-03-01), None
patent: 99-0038047 (1999-06-01), None
patent: 1999-0055979 (1999-07-01), None
patent: WO 95/35604 (1995-12-01), None
Kim Tae-Gue
Lee In-Hong
Park Sun
Park Tae-Hoon
Seo Sang-Hoon
Blakely & Sokoloff, Taylor & Zafman
Ho Duc
SK Telecom Co. Ltd
LandOfFree
Method for carrying out handoff between macrocell and... 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 for carrying out handoff between macrocell and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for carrying out handoff between macrocell and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3715731