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:
Nov. 20, 2007
Filed:
Feb. 02, 2001
Hiroyuki Atarashi, Yokohama, JP;
Sadayuki Abeta, Yokosuka, JP;
Koichi Okawa, Yokohama, JP;
Takehiro Ikeda, Yokosuka, JP;
Mamoru Sawahashi, Yokohama, JP;
Fumiyuki Adachi, Sendai, JP;
Hiroyuki Atarashi, Yokohama, JP;
Sadayuki Abeta, Yokosuka, JP;
Koichi Okawa, Yokohama, JP;
Takehiro Ikeda, Yokosuka, JP;
Mamoru Sawahashi, Yokohama, JP;
Fumiyuki Adachi, Sendai, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.