Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-04-12
2005-04-12
Tran, CongVan (Department: 2683)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S063400, C455S446000, C370S321000
Reexamination Certificate
active
06879845
ABSTRACT:
In a time-division multiplexing wireless communication system, an antenna module has plural antenna elements. Receiver high-frequency circuit synthesizes signals from the antenna elements according to an antenna directivity having a desired beam pattern. Demodulator selects one of the received signals from wireless terminals according to the synthesized received signals, and determines transmission beam direction information for use in directing the beam in the selected direction. Weighting circuit generates weight coefficients for setting of the beam patterns and transmission beam directions according to the transmission beam direction information, and produces transmission time slots according to a table listing the relations of the transmission beam directions and the time slots for use in the beam radiation in those directions. Down-link fixed beam-forming circuit and modulator control the antenna module using the generated beam pattern, beam direction and transmission time slots to transmit the down-link signal.
REFERENCES:
patent: 4317229 (1982-02-01), Craig et al.
patent: 5307507 (1994-04-01), Kanai
patent: 5983101 (1999-11-01), Billstrom
patent: 6058318 (2000-05-01), Kobayakawa et al.
patent: 6542746 (2003-04-01), Dean
patent: 6557869 (2003-05-01), Gillette et al.
patent: 6577869 (2003-06-01), Garrison
patent: 6707798 (2004-03-01), Klein et al.
patent: 6748218 (2004-06-01), Johnson et al.
patent: 20010012780 (2001-08-01), Edwards
patent: A-8-289366 (1996-11-01), None
patent: A-10-248086 (1998-09-01), None
patent: A-2000-59287 (2000-02-01), None
patent: 2000-59287 (2000-02-01), None
patent: 1999-0071961 (1999-09-01), None
patent: WO 9721276 (1997-06-01), None
IEEE Communications Magazine vol. 38 pp. 70-77 (Jul. 2000).
Ishida Yuuji
Suzuki Toshiro
Takahashi Satoshi
Takei Ken
Usami Hiroshi
Antonelli Terry Stout & Kraus LLP
Tran CongVan
LandOfFree
Wireless communication method and system using beam... 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 communication method and system using beam..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wireless communication method and system using beam... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3386754