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:
May. 02, 2006
Filed:
Jan. 17, 2002
Apparatus and method for transmitting packet data using walsh codes in a mobile communication system
Jin-woo Heo, Seongnam-shi, KR;
Sang-min Bae, Suwon-shi, KR;
Seong-woo Ahn, Yongin-shi, KR;
Jong-han Kim, Yongin-shi, KR;
Jin-Woo Heo, Seongnam-shi, KR;
Sang-Min Bae, Suwon-shi, KR;
Seong-Woo Ahn, Yongin-shi, KR;
Jong-Han Kim, Yongin-shi, KR;
Abstract
There is provided an apparatus and method for using QOF (Quasi-Orthogonal Function) Walsh codes when enough orthogonal Walsh codes are not available for a packet data service in a mobile communication system supporting concurrent provision of a high rate packet data service and a circuit call service. A data rate (DR1) in the case of using available orthogonal Walsh codes is first obtained. Then, a data rate (DR2) in the case of using QOF Walsh codes is obtained considering a power reduction factor due to the increase of interference involved with the use of the QOF Walsh codes. Packet data is transmitted at a higher data rate of DR1 and DR2. At the same time, information about the selected data rate and information about whether the QOF Walsh codes are used or not are transmitted.