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:
Apr. 14, 2009
Filed:
Dec. 26, 2002
Shinji Takeda, Yokohama, JP;
Atsushi Fujiwara, Yokohama, JP;
Hitoshi Yoshino, Yokosuka, JP;
Toru Otsu, Yokohama, JP;
Yasushi Yamao, Yokosuka, JP;
Shinji Takeda, Yokohama, JP;
Atsushi Fujiwara, Yokohama, JP;
Hitoshi Yoshino, Yokosuka, JP;
Toru Otsu, Yokohama, JP;
Yasushi Yamao, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
The object is to control interference in a permissible range by applying the CDMA system to signal collision in the conventional CSMA and TDMA base multihop systems and to relax the hidden terminal problem and others to enhance the throughput of the entire system by grouping of channel groups in multihop transmission and by control of transmission based on an interference level from another station. A multihop relay station calculates a desired signal level, for example, from an interference level at its own station of a packet sent from a mobile station, and notifies the mobile station of the desired signal level; and the mobile station calculates a transmission power amount of a packet from the desired signal level, determines whether the packet is transmissible to the station as a source of the desired signal level, and transmits the packet to the source station determined as a packet-transmissible station.