US Patent No. 11,071,110

METHOD AND DEVICE FOR ALLOCATING DYNAMIC FREQUENCY FOR SECONDARY USER IN COGNITIVE RADIO NETWORK


Patent No. 11,071,110
Issue Date July 20, 2021
Title Method And Device For Allocating Dynamic Frequency For Secondary User In Cognitive Radio Network
Inventorship Seong-Lyun Kim, Seoul (KR)
Jee Min Kim, Goyang-si (KR)
Hye Sung Kim, Seoul (KR)
Han Cha, Seoul (KR)
Seung-Woo Ko, Seoul (KR)
Assignee INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, Seoul (KR)

Claim of US Patent No. 11,071,110


1. A dynamic frequency allocation device for allocating a dynamic frequency for a secondary user in a cognitive radio network, the dynamic frequency allocation device comprising:an OP map generation unit configured to generate an OP (opportunity) map by using one or more of spectrum sensing information, an access request message, and a density and a transmission power of primary transmitters, the spectrum sensing information comprising identifier information, location information, and a sensing measurement matrix and received from a spectrum sensor which has completed sensing, the access request message comprising identifier information, location information, and operable band information and received from a secondary transmitter wishing to acquire a frequency access opportunity, the OP map representing a probability of successful communication of the secondary transmitter in each region of the cognitive radio network; and
a response message generation unit configured to generate a response message based on the generated map, the response message comprising a channel having a highest probability of successful communication from among channels accessible from a location of the secondary transmitter and the probability of successful communication,
wherein the probability of successful communication is a probability of a SINK (signal-to-interference-plus-noise ratio) at a particular location exceeding a predefined reference value ?*,
and the OP map representing the probability of successful communication in each region comprises the probability of successful communication of the secondary transmitter in a region in which the spectrum sensor is not installed.