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21.
公开(公告)号:KR1020040070477A
公开(公告)日:2004-08-09
申请号:KR1020040056694
申请日:2004-07-21
Applicant: 한국정보통신대학교 산학협력단 , 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04J14/0245 , H04J14/0249 , H04Q3/0066
Abstract: PURPOSE: A method for dynamically allocating a bandwidth in a loop-back type WDM(Wavelength Division Multiplexed)-PON(Passive Optical Network) is provided to simplify a channel connection method between an OLT(Optical Line Terminal) and an ONT(Optical Network Unit/Terminal). CONSTITUTION: An OLT(210) continuously transmits a non-modulated optical signal to an ONT(220)(S305). If the ONT(220) desires new registration or initiates its operation(S310), The ONT(220) requests registration from the OLT(210). The OLT receives a registration request frame from the ONT(220) and determines an initial frame ratio of a transmission frame(S320). The OLT(210) informs the ONT(220) that registration has been made based on the initial frame ratio(S325). The ONT(220) requests band allocation from the OLT(210) based on the initial frame ratio(S330). A scheduler of the OLT(210) determines of a non-modulated bandwidth for uplink data to be transmitted next(S335). The ratio of uplink and downlink is transmitted to the ONT(220)(S340).
Abstract translation: 目的:提供一种在环回型WDM(波分复用)-PON(无源光网络)中动态分配带宽的方法,以简化OLT(光线路终端)和ONT(光网络)之间的信道连接方法 单位/终端)。 构成:OLT(210)将无调制光信号连续发送到ONT(220)(S305)。 如果ONT(220)希望新的注册或启动其操作(S310),ONT(220)请求从OLT(210)注册。 OLT从ONT(220)接收注册请求帧,并确定传输帧的初始帧比(S320)。 OLT(210)通知ONT(220)已经基于初始帧比进行了注册(S325)。 ONT(220)基于初始帧比请求来自OLT(210)的频带分配(S330)。 OLT(210)的调度器确定接下来要发送的上行链路数据的未调制带宽(S335)。 上行链路和下行链路的比例被传输到ONT(220)(S340)。