Quantitative analysis of optical network unit sleep technique with maintained latency for asymmetric usage by residential users

• Main Authors: Susumu Nishihara, Naoki Miura, Hiroko Nomura, Nobuyuki Tanaka, Kenichi Suzuki, Naoto Yoshimoto
• Format: Article
• Language: English
• Published: Wiley 2013-11-01
• Series: The Journal of Engineering
• Subjects: numerical analysis; optical fibre networks; optical transmitters; telecommunication traffic; quantitative analysis; optical network unit sleep technique; ONU; optical transmitter; power efficiency; residential user network; numerical simulation; power-saving effectiveness; upstream traffic; downstream traffic
• Online Access: http://digital-library.theiet.org/content/journals/10.1049/joe.2013.0099

This study provides an insight into the effectiveness of an optical network unit (ONU) sleep technique, where a subcomponent of the ONU is powered down during the absence of input traffic. The approach contributes to the realisation of advanced power efficiency over a wide range of input throughputs in situations where downstream traffic exceeds upstream traffic in recent residential networks. A numerical simulation showed that power-saving effectiveness could be achieved for an Mbit/s downstream throughput without latency implications in the Tx sleep mode.