Energy Efficient Mobile Backhaul: A BBF InitiativeBackhaul...
Transcript of Energy Efficient Mobile Backhaul: A BBF InitiativeBackhaul...
Energy Efficient Mobile Backhaul: A BBF InitiativeBackhaul: A BBF Initiative
Konstantinos Samdanis and Manuel PaulJune 2015June 2015
Outline Motivation Environmental and Cost Considerations Environmental and Cost Considerations Regulatory Policies
Energy Efficient Mobile Backhaul Network Planning Nodal Requirements Network Management Network Management
Summary
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The Broadband Forum is the central organization driving global broadband wireline solutions and empowering converged packet networks worldwide
Focused on engineering smooth evolution of broadband networks and mitigating new technology risks
Our work-– defines best practices for global networks– enables service and content delivery– engineers critical device & service management tools and
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engineers critical device & service management tools, and – is key to redefining broadband
Energy Efficiency: An Industry VisionReduce CO2e intensity of our worldwide business by 80%, from 1997 levels, by Dec 2020.
40% fewer CO2emissions by 2020.
• “Green Action” plan • voluntarily agreed to reduce
Halve CO2 in mature markets by 2020. Reduce CO2 per network node by 20% y y g
energy use per unit of telecoms traffic by 20% by 2012 compared to 2008
Reduce GHG emissions by 159 kilotonnes (50% of 2003 GHG emissions) by the end of 2020.
by 2015 in emerging markets.
Strives to save energy and Reducing our carbon intensity by 50% by 2020. gy
reduce CO2 emissions at its communications facilities.
Reduce the electricity consumption relative to data growth on our network by 17% as compared 2010.
Launched its first line of environmentally friendly products
4 Reduce our energy consumption in networks by 30%
y p“Telecom Italia Green”
Between 2006 and 2020• Committed to reduce CO2 emissions by 20% • Reduce energy consumption by 15%
Environmental Policies & Telco‘s CostsKyoto protocol in 1997 introduced a strong objective to take action against global warming.
EC Code-of-Conduct (1999) Policies for reducing CO2 - mandates towards SDOs (M462)
define upper bound energy limits for equipment
Increasing Energy Costs EC Telcos’s Energy OPEX Costs* Infrastructure enhancement estimations for 2020
Telcos‘ devices > 3 times
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broadband access > 9 times
* Source: R. Bolla, et. al., “Energy Efficiency in the Future Internet: A Survey of Existing Approaches and Trends in Energy-Aware Fixed Network Infrastructures”, IEEE Communications Surveys & Tutorials, Vol.13, No. 2, 2011
Saving Energy: How and Where How to provide energy efficiency?
Match offered capacity to demandMatch offered capacity to demand
Where in telecom systems? Access (70%): (i) High number of devices Access (70%): (i) High number of devices
(ii) High variation of Capacity-Demand Transport/Core (30%): High device expenditure
6 Source: R. Bolla, et. al., “Energy Efficiency in the Future Internet: A Survey of Existing Approaches and Trends in Energy-Aware Fixed Network Infrastructures”, IEEE Communications Surveys & Tutorials, Vol.13, No. 2, 2011
Energy Efficient Mobile BackhaulBBF TR-293
Specification for Energy Efficient Mobile Backhaul Provide conceptual background for the deployment Considering the external transport specific behavior Without an intent to define internal system design or system y g y
architecture
Energy savings in RAN equipment Motivates this effort, be reflected in mobile backhaul Defining energy requirements for RAN is out of scope
Energy savings without compromising SLAs 7
Scope and Contribution of the BBF Initiative
Radio CoreBBF TR-221 Mobile Backhaul Architecture
MSC
HSSMME
MSC P/S-Gw
Pl i Network-basedHolisticHolisticPlanning
ManagementEquipment
Network based
8 Align RAN and Core Network Energy
q p
Energy Efficient Network Planning Place resources/dimension topology: Off-line activity
BBF Architecture & Network Virtualization BBF Architecture & Network Virtualization Fewer “boxes”, node consolidation Unifies 2G/UMTS/HSDPA/LTE on a common IP/packet-based infrastructure E bl i f h i & h l l Enables infrastructure sharing & wholesale
9 Reference Architecture BBF TR-221
Power Consumption Vs Operational Mode “Sleeping”: most effective means to save energy Multiple sleeping and “off” states may exist Multiple sleeping and off states may exist Transition energy overhead
benefit only if saved energy larger than transition energy overhead
Duration of transition (may not be interruptible)
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IEEE Energy Efficient Ethernet (EEE) EEE Mechanism Description Defines a Low Idle link state Protocol to enable PHY in low idle to maintain up-to-date operational
parameters allowing fast link activation
EEE M bil B kh l li bilit EEE Mobile Backhaul applicability Common for LTE base stations in access and aggregation networks
External Behaviour External Behaviour Packet bundling: may introduce delay and packet loss/buffer overflow
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IEEE Power over Ethernet (PoE) Mechanism Description
Delivers power along with data saving ~0 6-2 1W/portDelivers power along with data saving 0.6 2.1W/port IEEE 802.3af-2003 PoE:15.4 W / IEEE 802.3at-2009 PoE: 25.5 W
Empowers remote devices: reduce cabling / eliminates AC outletsP id t l f tt h d d i ( / ff)Provides energy control of attached devices (power-on/off)
Mobile Backhaul applicability R l t f ll ll ith t lRelevant for small cells without a power supply Applicable to equipment within the range of PoE power supply
E t l B h i External Behaviour RAN/backhaul coordination need for alarm avoidance
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ONU Power Management in ITU-T PON Mechanism Description
Three means of power modes:
ITU-T G.987.3 / G.984.3
Three means of power modes: Doze mode: ONU Tx off - Rx remains continuously on Cyclic sleep mode: ONU Tx-Rx sleep/active periods in sequential periods Watchful sleep mode: Doze on ONU side and Cyclic sleep mode on OLT
The ONU power management states: Listen state: ONU Rx on - Tx off (needs synchronization) Asleep/Watch state: ONU with both Rx-Tx off / Rx periodically turned on to check DozeAware / SleepAware / WSleepAware: Both ONU Rx/Tx remain on.
Mobile Backhaul Applicability: High Bw aggregation and access
External Behaviour:Tight relation between power reduction and SLAs13
EEE-based Link Aggregation (LAG) Mechanism Description
LAG based-on IEEE 802 1AX (BBF TR-223)LAG based on IEEE 802.1AX (BBF TR 223) allows one or more links to be bundled together
Combine EEE with LAG EEE low idle link state used for each link of the bundle EEE low idle link state used for each link of the bundle links removed from bundle enter in low idle link state
Mobile Backhaul Applicability Mobile Backhaul ApplicabilityUsed in access and aggregation networks to enhance link capacity
decision to remove member links of LAG can be based on observed load
External BehaviourLAG removal and addition of links reflects link rate 14
Energy Saving Management
Energy saving management refers to: P li i / f ti d l ll t ll b th Policies / functions managed locally, centrally or both
Centralized control: manages easier a large number of entities Device control: based on local load observations
Monitoring processes collect information about: Energy consumption of equipment and functions Energy consumption of equipment and functions Traffic load conditions and network utilization
ensure profitable energy savings by identifying off-peak periods Performance at the node and through network management
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Broadband Forum Architectures and Specifications drive Energy-Efficient, Interoperable Implementationsdrive Energy Efficient, Interoperable Implementations
BBF TR-293: Energy Efficient Mobile Backhaul
Planning: Multi-RAN - Virtualization - Consolidation
Equipment: Energy proportionalityq p gy p p y
Network: Coordination - Control
Management: Metering and Monitoring Management: Metering and Monitoring
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Thanks! Any Questions?
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