Multiplex communications – Communication over free space – Repeater
Reexamination Certificate
2007-05-15
2007-05-15
To, Doris H. (Department: 2616)
Multiplex communications
Communication over free space
Repeater
C370S208000, C370S209000, C375S130000
Reexamination Certificate
active
09693377
ABSTRACT:
A pilot channel transmission method is provided of transmitting a pilot channel through a downlink from a base station in a CDMA mobile communication system including base stations. Each base station is installed in one of a plurality of cells, uses a same frequency, and divides its channels using orthogonal codes uniquely assigned to the channels. Each of the cells is identified by multiplying a spreading code assigned to each base station by the channels spread by the orthogonal codes. In the pilot channel transmission method, when a plurality of orthogonal code sets, each of which includes a plurality of spreading codes assigned thereto, using by each base station, a pilot channel is assigned to each orthogonal code set, and at least one of the pilot channels is transmitted. The pilot channel can be provided with a symbol rate higher than the minimum symbol rate defined in the system.
REFERENCES:
patent: 5930230 (1999-07-01), Odenwalder et al.
patent: 6061338 (2000-05-01), O
patent: 6073021 (2000-06-01), Kumar et al.
patent: 6094450 (2000-07-01), Shockey
patent: 6097954 (2000-08-01), Kumar et al.
patent: 6285655 (2001-09-01), Lundby et al.
patent: RE37420 (2001-10-01), Asano et al.
patent: 6577608 (2003-06-01), Moon et al.
patent: 0 795 969 (1997-09-01), None
patent: 0 851 601 (1998-07-01), None
patent: 0 884 918 (1998-12-01), None
patent: 1198550 (1989-08-01), None
patent: 9238098 (1997-09-01), None
patent: 9252266 (1997-09-01), None
patent: 9261763 (1997-10-01), None
patent: 10145839 (1998-05-01), None
patent: 11252002 (1999-09-01), None
patent: 2000031939 (2000-01-01), None
patent: 2001008262 (2001-01-01), None
patent: 2001053720 (2001-02-01), None
patent: 2002-507855 (2002-03-01), None
patent: WO 97/29596 (1997-08-01), None
patent: WO99/48228 (1999-09-01), None
Usuda et al., “Optimizing the Number of Dedicated Pilot Symbols for Forward Link in W-CDMA Systems”, 51stIEEE Vehicular Technology Conference (VTC 2000-Spring), pp. 2118-2122, May 2000.
Ericsson, “Proposal for downlink interference measurement method revised”, 3GPP (3rdGeneration Partnership Project) TSG-RAN Working Group 1 meeting #5, TSGR1#5(99)644, Jun. 1999.
Official Notice of Rejection Patent Application No.: 11-301710 Case No.: DCMH110154.
Ishikawa Yoshihiro
Usuda Masafumi
NTT DoCoMo Inc.
To Doris H.
Tsegaye Saba
Workman Nydegger
LandOfFree
Transmission method of downlink pilot channel in CDMA mobile... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission method of downlink pilot channel in CDMA mobile..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission method of downlink pilot channel in CDMA mobile... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3815323