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:
Jul. 10, 2012
Filed:
Apr. 23, 2008
Isameldin Mohammed Suliman, Oulu, FI;
Pasi Maliniemi, Varjakka, FI;
Johanna Vartiainen, Haukipudas, FI;
Timo Hongell, Oulu, FI;
Ari Tenhunen, Oulu, FI;
Isameldin Mohammed Suliman, Oulu, FI;
Pasi Maliniemi, Varjakka, FI;
Johanna Vartiainen, Haukipudas, FI;
Timo Hongell, Oulu, FI;
Ari Tenhunen, Oulu, FI;
Elektrobit Wireless Communications Oy, Oulu, FI;
Abstract
A transmitter of a cognitive radio comprises a selector for selecting from a memory a channel which is determined free, for a power measurement. A power meter measures the received power from the selected channel. Detection selector compares the measured power and a power of the same channel saved in the memory and selects the channel for detection if the power in the channel is within a predetermined range from the power saved in the memory. A detector performs detection of the channel as a response to the selection for detection. A channel selector selects the channel for communication if the channel is detected unoccupied on the basis of detection. The transmitter communicates in the channel as a response to the selection for communication.