다중 FA(frequency assignment) 시스템에서 효율적인 스펙트럼 센싱 방안
송명선, 강법주, 김창주
- 8279767 (2012.10.02)
05MR2400, 스펙트럼 사용효율 개선을 위한 Cognitive radio 기술 개발,
- Provided is a method of assigning a frequency channel using efficient spectrum sensing in a multiple Frequency Assignment (FA) system. The method includes a channel sensing process, wherein a base station (BS) of a secondary user classifies multiple frequency channels licensed to a primary user into a plurality of channel states by changing a sensing period according to the types of classified channel state sets, and manages the sensed channel states as frequency channel state set information; a channel state set broadcasting process, wherein the BS transmits the frequency channel state set information managed in the channel sensing process to secondary user terminals using a broadcast message; and a channel assigning process, wherein if the BS receives a channel assignment request message from a new secondary user terminal which has received the broadcast message, the BS assigns an unused frequency channel from among frequency channels licensed to the primary user to the new secondary user terminal using the frequency channel state set information. Accordingly, a frequency channel can be assigned to a secondary user requesting channel assignment using frequency channel state set information without a primary user experiencing interference noise.
- KSP 제안 키워드
- Channel sensing, Channel state, Multiple frequency, Secondary user(Su), Sensing period, Spectrum Sensing, User terminals, base station(BS), channel assignment, frequency assignment, primary users(PUs)