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. 23, 2005
Filed:
Jun. 05, 2003
Tomoyuki Harada, Hitachi, JP;
Takuji Hamada, Hitachioota, JP;
Hideaki Masuko, Hitachi, JP;
Shinichi Hanada, Hitachi, JP;
Yoshiaki Adachi, Hitachioota, JP;
Hisao Ogawa, Hitachi, JP;
Tomoyuki Harada, Hitachi, JP;
Takuji Hamada, Hitachioota, JP;
Hideaki Masuko, Hitachi, JP;
Shinichi Hanada, Hitachi, JP;
Yoshiaki Adachi, Hitachioota, JP;
Hisao Ogawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Occurrence of significant difference of transmission rate between communication zones can be prevented to maintain the transmission rate of overall network uniform. The radio network system includes a plurality of radio communication control units are connected with each other via radio main line, and each radio communication control unit has a communication function with at least one radio communication terminal arranged within own communication area. Each of the radio communication control units includes means for broadcasting a transmission rate restriction demand to all of other radio communication control units and all of radio communication terminals when data amount stored in a transmission and reception buffer exceeds a predetermined threshold value, and means for lowering a transmission rate when a transmission rate restriction demand is received from any other radio communication control unit within a predetermined period and for increasing the transmission rate when no transmission rate restriction demand is received from any other radio communication control unit.