Open Access Open Access  Restricted Access Subscription Access

A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs


Affiliations
1 School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2 College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
 

High energy consumption in Ethernet Passive Optical Networks (EPONs) has caused intense research on energy-saving methods in recent years. The most common method for EPON energy saving is to cause optical network units (ONUs) to sleep which are idle or low loaded. With the popularity of multimedia applications, the ONUs carry not only unicast traffic but alsomore and more multicast traffic. However, existing studies mainly focus on ONUs that support only unicast traffic. The many differences between multicast traffic and unicast traffic make it necessary to design novel energy-saving methods. This paper proposes a multicasttraffic-oriented energy-saving algorithm for EPONs, called the energy-saving algorithm for multicast traffic (ESMT). To save as much energy as possible, the proposed algorithm uses a hybrid sleep mode (composed of a deep sleep state and an independent sleep mode) in which not only can ONU enter a deep sleep state, but also the ONU transmitter and receiver can sleep independently. Simulation results show that the proposed algorithm, which is oriented to multicast traffic in EPONs, is more energy efficient than other algorithms.
User
Notifications
Font Size

Abstract Views: 78

PDF Views: 0




  • A Multicast-Traffic-Oriented Energy-Saving Algorithm with a Hybrid Sleep Mode for EPONs

Abstract Views: 78  |  PDF Views: 0

Authors

Lincong Zhang
School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
Lei Guo
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Yejun Liu
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Kefeng Wei
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
Weigang Hou
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China

Abstract


High energy consumption in Ethernet Passive Optical Networks (EPONs) has caused intense research on energy-saving methods in recent years. The most common method for EPON energy saving is to cause optical network units (ONUs) to sleep which are idle or low loaded. With the popularity of multimedia applications, the ONUs carry not only unicast traffic but alsomore and more multicast traffic. However, existing studies mainly focus on ONUs that support only unicast traffic. The many differences between multicast traffic and unicast traffic make it necessary to design novel energy-saving methods. This paper proposes a multicasttraffic-oriented energy-saving algorithm for EPONs, called the energy-saving algorithm for multicast traffic (ESMT). To save as much energy as possible, the proposed algorithm uses a hybrid sleep mode (composed of a deep sleep state and an independent sleep mode) in which not only can ONU enter a deep sleep state, but also the ONU transmitter and receiver can sleep independently. Simulation results show that the proposed algorithm, which is oriented to multicast traffic in EPONs, is more energy efficient than other algorithms.