Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2011-08-02
2011-08-02
Pérez-Gutiérrez, Rafael (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
C370S330000, C370S326000, C370S336000, C455S025000, C455S063400, C455S562100
Reexamination Certificate
active
07990942
ABSTRACT:
Data transmission is performed using the most suitable data rate for the radiation pattern of an antenna. Using an individual pilot channel of a first slot, a base station transmits a pilot signal in a specified direction with a beam pattern having narrow directivity. A wireless terminal located in that direction receives the pilot signal and determines a data rate according to the reception quality of the pilot signal. The wireless terminal transmits to the base station a signal requesting the determined data rate. The base station receives that signal and, based on the requested data rate, transmits data to the wireless terminal with a beam pattern in the same direction as the direction in which the pilot signal was transmitted, using a data channel of a second slot, which occurs a predetermined number of slots after the first slot.
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Fujishima Kenzaburo
Taira Masanori
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Kasraian Allahyar
Perez-Gutierrez Rafael
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