The invention discloses a method, a kind of uplink bandwidth allocation in passive optical network includes an optical line terminal (OLT) through the uplink bandwidth mapping domain optical network unit (ONU) uplink bandwidth allocation, the continuous transmission container assigned by ONU (T CONT) of the total transmission payload length: ONU B the forward error correction (FEC) product data byte length L encoding a codeword contains a positive integer n and the byte length R uplink burst slot minus ONU sent in addition to the payload outside the FEC protected content, i.e. B = L * n R ONU according to the total bandwidth of TCONT bytes; the size distribution of OLT assembly uplink data and send it to OLT. The invention also discloses a system for uplink bandwidth allocation in a passive optical network. The invention reduces the complexity of ONU and OLT processing FEC encoded data, improves the coding efficiency of ONU and the decoding efficiency of OLT.
【技术实现步骤摘要】
【技术保护点】
1.一种无源光网络中上行带宽分配的方法,其特征在于,该方法包括:光线路终端(OLT)通过上行带宽映射域为光网络单元(ONU)分配上行带宽,其中,为ONU分配的连续传输容器(T-CONT)的传输总净荷长度B为:所述ONU采用前向纠错(FEC)编码时的一个码字所包含的数据字节长度L与正整数n的乘积,再减去ONU发送的上行突发时隙中除净荷外受FEC保护内容的字节长度R,即B=L×n-R字节;所述ONU根据OLT分配的T-CONT总带宽大小组装上行数据并发送给所述OLT。
【技术特征摘要】
【专利技术属性】
技术研发人员:张伟良,耿丹,
申请(专利权)人:中兴通讯股份有限公司,
类型:发明
国别省市:94[]
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