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    METHOD OF FREQUENCY CHANNEL ASSIGNMENT USING EFFECTIVE SPECTRUM SENSING IN MULTIPLE FREQUENCY ASSIGNMENT SYSTEM
    2.
    发明专利
    METHOD OF FREQUENCY CHANNEL ASSIGNMENT USING EFFECTIVE SPECTRUM SENSING IN MULTIPLE FREQUENCY ASSIGNMENT SYSTEM 未知

    公开(公告)号：CA2625370C

    公开(公告)日：2014-09-16

    申请号：CA2625370

    申请日：2006-10-13

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KANG BUB-JOO ,  SONG MYUNG-SUN ,  KIM CHANG-JOO

    IPC: H04W72/00 ,  H04J1/00 ,  H04W16/14 ,  H04W72/04 ,  H04W72/08

    Abstract: 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 state sets according to usage states, periodically senses 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.

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