Energy efficiency analysis of high speed triple-play services in next-generation PON deployments

Abstract

In this paper, the energy consumption of high speed access services up to 1 Gb/s per customer is estimated for different passive optical network (PON) technologies. While other studies on PON power consumption typically assume a fixed split ratio, we also consider a greenfield approach, where the split ratio can be optimized for each technology, taking full advantage of its capacity and reach. The split ratio optimization takes into account Quality of Service (QoS) in terms of bandwidth availability and packet loss for triple-play services (voice, television and Internet). This paper includes an in-depth discussion of our split ratio dimensioning approach and our power consumption model for an optical access network in a major city. The obtained results show that statistical gain provided by dynamic bandwidth allocation as well as power splitting ratio optimization in PONs are key factors for achieving energy efficiency. For access rates up to 900 Mb/s, XG-PON1 turns out to be the most energy efficient option. For higher access rates up to 1 Gb/s, the optimal technology depends on split ratio restrictions. If an existing optical distribution network (ODN) with split ratio 1:64 is used, XG-PON1 remains the most energy efficient technology. If higher split ratios up to 1:256 can be achieved, TWDM PON becomes the most energy efficient solution for access rates up to 1 Gb/s.

Provisioning 1 Gb/s symmetrical services with next-generation passive optical network technologies

“…The cost of uplink transceivers, which is dependent on split ratio, packet loss, and demand distribution, is not included. The reader can find an uplink analysis based on Monte Carlo simulations in [9]. For TWDM-PON, the cost of the WDM mux is also included here.…”

“…Capacity planning based on oversubscription works because of the empirical observation that only a small portion of subscribers are simultaneously active at a given random instant [8,9]. Network designers leverage this fact to provide access to a large number of users at a moderate expense of resources.…”

Network Planning for Dual Residential-Business Exploitation of Next-Generation Passive Optical Networks to Provide Symmetrical 1 Gb/s Services

“…Oversubscription-based capacity planning in access networks works well because of the empirical observation that only a small portion of subscribers are simultaneously active at a given random instant [12]. Network designers leverage this fact to provide access to a large number of users at a moderate expense of resources.…”

Power Consumption Modeling and Analysis of Integrated Optical-Wireless Access Network

“…Table 3. Parameters considered in the simulation [21], [23], [24] OLT We also considered the effect of power consumption performance when the network is connected to different wireless access technologies. We take into account the wireless technologies that applicable for small cell application such as UMTS, HSPA, WiMAX and LTE.…”