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:
Dec. 31, 2013
Filed:
Dec. 05, 2008
Gwangzeen Ko, Seoul, KR;
Sung-jin You, Daejeon, KR;
Myung-sun Song, Daejeon, KR;
Sung-hyun Hwang, Daejeon, KR;
Jung-sun Um, Suwon, KR;
Chang-joo Kim, Daejeon, KR;
Gwangzeen Ko, Seoul, KR;
Sung-Jin You, Daejeon, KR;
Myung-Sun Song, Daejeon, KR;
Sung-Hyun Hwang, Daejeon, KR;
Jung-Sun Um, Suwon, KR;
Chang-Joo Kim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A channel switching method is provided for a base station to allocate a slot for data exchange with each of a plurality of terminals in a frequency channel that is not used by an incumbent user (IU). The method includes include transmitting a channel switching message for requesting to switch to a backup channel when a signal of the IU is sensed in the frequency channel; transmitting a beacon frame via the backup channel, wherein the beacon frame comprises allocation information about slots which are in the frequency channel and which are respectively allocated to each of the plurality of terminals; and allocating the slot for data exchange with each of the plurality of terminals to the backup channel according to the allocation information, and communicating with each of the plurality of terminals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile