Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-09-11
2007-09-11
Le, Danh (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S439000, C455S552100, C370S331000, C370S332000
Reexamination Certificate
active
11176686
ABSTRACT:
A control node (26) of a radio access network (24) comprises a soft handover unit (62) and a power control unit (50). The soft handover unit (62) controls a soft handover procedure wherein a user equipment unit (30) has diversity in radio transmissions with plural radio base stations (28) comprising an active set of base stations. The power control unit (50), during the soft handover procedure, facilitates an adjustment of an uplink power level used by the user equipment unit (30) for uplink radio transmissions to the plural base stations by an adjustment amount. The adjustment amount is determined to promote uplink synchronization for all radio base stations of the active set. In one example embodiment, the power control unit (50) comprises a soft handover power boost function (70) which, during the soft handover procedure, increases the uplink power level used by the user equipment unit (30) for uplink radio transmissions by the adjustment amount. The adjustment amount is preferably a function of a difference between power levels of downlink reference signals of the active set.
REFERENCES:
patent: 6144861 (2000-11-01), Sundelin et al.
patent: 6154450 (2000-11-01), Wallentin et al.
patent: 6445917 (2002-09-01), Bark et al.
patent: 6473624 (2002-10-01), Corbett et al.
patent: 6487420 (2002-11-01), Jönsson
patent: 6493541 (2002-12-01), Gunnarsson et al.
patent: 6577875 (2003-06-01), Brouwer
patent: 6584330 (2003-06-01), Ruuska
patent: 6633766 (2003-10-01), van der Pol
patent: 6690939 (2004-02-01), Jonsson et al.
patent: 6760594 (2004-07-01), Murasawa et al.
patent: 6799045 (2004-09-01), Brouwer
patent: 6823193 (2004-11-01), Persson et al.
patent: 6836661 (2004-12-01), Mohebbi
patent: 6845238 (2005-01-01), Müller
patent: 6912228 (2005-06-01), Dahlman et al.
patent: 7010315 (2006-03-01), Pan et al.
patent: 2002/0077113 (2002-06-01), Spaling et al.
patent: 2002/0094833 (2002-07-01), Lieshout et al.
patent: 2002/0115460 (2002-08-01), Rune et al.
patent: 2003/0092463 (2003-05-01), Charriere et al.
patent: 2004/0209264 (2004-10-01), Rune et al.
patent: 2005/0025100 (2005-02-01), Lee et al.
patent: 2005/0030964 (2005-02-01), Tiedemann et al.
patent: 2005/0037797 (2005-02-01), Hamabe
patent: 01/95521 (2001-12-01), None
patent: 03/077584 (2003-09-01), None
International Search Report and Written Opinion mailed Nov. 28, 2006 in corresponding PCT Application No. PCT/SE2006/050233.
Hamabe, “Adjustment Loop Transmit Power Control During Soft Handover in CDMA Cellular Systems”, Vehicular Technology Conference, 2000, IEEE VTS Fall VTC 2000, 52ndSep. 24-28, 2000, Piscataway, NJ, IEEE, publ. Sep. 24, 2000, vol. 4, pp. 1519-1523.
Gunnarsson Fredrik
Hagerman Bo
Ostman Thomas
Le Danh
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
LandOfFree
Wireless telecommunications with adjustment of uplink power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wireless telecommunications with adjustment of uplink power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless telecommunications with adjustment of uplink power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3791494