The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2002
Filed:
May. 11, 1998
Tetsuo Onodera, Kitakatsushika-gun, JP;
Hiroshi Usami, Yokohama, JP;
Akihiro Shibuya, Tokyo, JP;
Eimatsu Moriyama, Koganei, JP;
Kiyoshi Hamaguchi, Yokohama, JP;
Yoichi Saito, Wakayama, JP;
Tadashi Matsumoto, Yokosuka, JP;
Mitsuhiko Mizuno, Yokohama, JP;
Other;
Abstract
The present invention is directed to a TDMA communication system which is adapted to different communication environments or prepares different communication environments and allows each mobile station to be set for working in any one of the different communication environments. The communication system commonly uses a TDMA format that has a fixed frame-length and a constant number of bits for each of the slots composing the frame. The communication environments have prepared respective sets of communication conditions, each set including a transmission power, a modulating method, the number of multiplexed signals, error-correction, an antenna gain, a frequency hopping value and a diversity value. At each mobile station and each base station, one of plural sets of communication conditions for respective environments is selected to establish communication with each other under the selected environment.