Flexible TDMA/WDMA passive optical network: Energy efficient next-generation optical access solution

Dixit, Abhishek; Lannoo, Bart; Das, Goutam; Colle, Didier; Pickavet, Mario; Demeester, Piet

doi:10.1016/j.osn.2013.03.001

Cited by 37 publications

(28 citation statements)

References 34 publications

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“…At central office, a wavelength selective switch (WSS) is used instead of static AWG to allocate the wavelength dynamically according to the instantaneous traffic demand [16]. By incorporating WSS switch to connect OLT and different ODNs, the number of assigned wavelengths are also changed depending upon the load of particular ODN.…”

Section: Previous Related Workmentioning

confidence: 99%

“…This provides the dynamicity in the resource sharing and routes the wavelengths towards the high traffic load of the network for load balancing. By reducing effective number of required wavelengths, up to 60% of the OLT energy is reduced [16]. However, dual rate and broadcasting features are not available in the schemes proposed in [14][15][16].…”

Section: Previous Related Workmentioning

confidence: 99%

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Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

Garg

Janyani

2017

Telecommun Syst

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This paper reviews various energy efficient approaches in existence and proposes a Hybrid WDM-TDM PON architecture that allows the adaptive bandwidth allocation mechanism to reduce central office power consumption with acceptable performance. Our proposed architecture allows sending two signals, one broadband and other narrowband to each optical networking unit so an appropriate signal can be utilized according to the traffic demand. In case of very low traffic, only narrowband signal is used and a significant amount of energy consumption and OPEX is reduced. By using 2 × N power splitter and interleaver, proposed architecture provides broadcasting at both broadband and narrowband signal depending on the required link rate. This further reduces energy consumption and OPEX by avoiding the transmission of same signal from multiple sources. Offered data rates to the optical distribution networks (ODNs) may also be varied by doubling the wavelength spacing of remote node AWG so that two contiguous wavelengths can be transmitted at each port or ODN. This provides the geographical dynamic bandwidth allocation. Proposed architecture also support simultaneous transmission of both broadband and narrowband signals to the ODN to provide bandwidth scalability and network extensibility for supporting future access network in terms of new users and data rates. As two signals are reaching to any ODN, resiliency against OLT TRx and line card failure is also achieved. The performance of the proposed design is verified by simulation results in terms of bit error rate and receiver sensitivity to demonstrate its feasibility for the next-generation optical access network.

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Section: Previous Related Workmentioning

confidence: 99%

Section: Previous Related Workmentioning

confidence: 99%

Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

Garg

Janyani

2017

Telecommun Syst

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“…Although some FTTH networks consume power at the remote nodes (like AONs), they only have a minor market share in the current FTTH rollouts. 2 As aggregation, a 200 Gb/s aggregation switch shared by 100 OLTs is assumed, and as core, several levels of 200 Gb/s IP routers are assumed shared by 4 aggregation switches at the first level [3]. 3 We define NGOA as a next generation compared to the XG-PON standard and in a 2020 time frame, i.e.…”

Section: Next Generation Optical Access Networkmentioning

confidence: 99%

“…Note that a legacy ONU, is reachable all the time and in this case there are no sleep possibilities. The sleep potential, however, could be enabled by a sleep mode aware (SMA) dynamic bandwidth allocation (DBA) protocol as proposed in [1], [2] and discussed in section 4.2.2.…”

Section: Potential Of Energy Efficient Designsmentioning

confidence: 99%

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How sleep modes and traffic demands affect the energy efficiency in optical access networks

et al. 2015

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An ever-increasing bandwidth demand is the main driver to investigate next generation optical access (NGOA) networks. These networks, however, do not only have to comply with increasing data rates, they should also meet the societal green agenda. As the access part consumes a major fraction of the energy consumption in today's fiber-to-the-home (FTTH) based telecommunication networks, the energy efficiency of NGOA networks should be an important design parameter. In this paper, we present a detailed evaluation of the energy consumption in different NGOA technologies. Furthermore, we analyze the effects of (1) introducing low power modes (e.g., sleep and doze modes) in the various NGOA technologies and (2) using optimal split ratios adjusted to the traffic demands so that the energy consumption is optimized for the desired quality of service (QoS) level.

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Flat ball topology basics multi‐transceivers 100 km/2.5 Tbps gigabit‐ethernet PON architecture for energy efficiency in data centers

Kumari,

Arya

2023

Trans Emerging Tel Tech

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Existing electronic data sources desire high‐power requisites, in order to obtain a large bandwidth, minimum power dissipation and low latency in networks. In this instance, a gigabit ethernet passive optical network (GEPON) architecture based on a dynamic Flat Ball topology incorporating multi‐transceivers to minimize network energy consumption via passive devices along with bandwidth reconfiguration potential and low latency is reported in this paper. The proposed architecture connected with 200 nodes exhibits 26 as well as 40 dB total loss in uplink as well as downlink considerably, compared to Sirius and Sandwich tree. Also, Flat ball GEPON architecture permits 9 and 10 dBm energy saving in downlink as well as uplink, respectively, than conventional GEPON architecture at 1 ms delay. The proposed architecture with 50 Erlang load allows energy ratio of 39% in downlink and 37% in uplink, at 25 × 100 Gbps traffic rate for 55 nodes. Besides this, the faithful fiber range of 100 km considering fiber no‐linearities and impairments can be obtained successfully. The architecture can be bordered with 1:64 splitting ratio with 35 ms in downlink as well as 31 ms in uplink transmission delay at bit error rate of 10−3. Additionally, on comparing the proposed topology with existing architectures depict its superiority with minimal implementation cost, low‐power dissipation, less traffic delay as well as high scalability and high flexibility.

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Flexible TDMA/WDMA passive optical network: Energy efficient next-generation optical access solution

Cited by 37 publications

References 34 publications

Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

Adaptive bandwidth mechanism using dual rate OLT for energy efficient WDM–TDM passive optical network

How sleep modes and traffic demands affect the energy efficiency in optical access networks

Flat ball topology basics multi‐transceivers 100 km/2.5 Tbps gigabit‐ethernet PON architecture for energy efficiency in data centers

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