摘要
PON(无源光网络)作为下一代接入网重要的接入方案,在能源短缺的今天,其能耗效率理应受到关注。1bit能量是衡量能耗效率的指标。单用户1bit能量在PON的P2MP(点对多点)网络中,其增减不仅仅依赖于ONU(光网络单元)接入带宽的变化,还受到OLT(光线路终端)广播有效因子α的影响。通过改进设备以增加带宽,可使1bit能量总能耗减小,能量利用率得到提高。
As Passive Optical Network （PON） is an important access scheme for next generation access networks, much atten- tion ought to be paid to its energy efficiency, especially when energy shortage has become a serious problem in the world today. 1 bit energy is an index for measuring energy efficiency. In PON P2MP networks, the increase or decrease of a single user＇s 1 bit energy is not directly dependent on the changes of ONU assess bandwidth as it is also affected by the OLT broadcast ef- fective factor a. Besides, device improvement will lead to bandwidth increase and the reduction of the total consumption of 1 bit energy will enable energy efficiency improvement.
出处
《光通信研究》
北大核心
2013年第3期29-32,共4页
Study on Optical Communications
