Energy Efficient Mobile. Konstantinos Samdanis and Manuel Paul

Transcription

1 Energy Efficient Mobile Backhaul: A BBF Initiative Konstantinos Samdanis and Manuel Paul June 2015

2 Outline Motivation Environmental and Cost Considerations Regulatory Policies Energy Efficient Mobile Backhaul Network Planning Nodal Requirements Network Management Summary 2

3 3 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 is key to redefining broadband

4 Energy Efficiency: An Industry Vision Reduce GHG emissions by 159 kilotonnes (50% of 2003 GHG emissions) by the end of Reduce CO 2 e intensity of our worldwide business by 80%, from 1997 levels, by Dec Halve CO 2 in mature markets by % fewer CO 2 Green Action plan Reduce CO 2 per network node by 20% emissions by voluntarily agreed to reduce by 2015 in emerging markets. energy use per unit of telecoms traffic by 20% by 2012 compared to 2008 Reduce the electricity consumption relative to data growth on our network by 17% as compared Reducing our carbon intensity by 50% by Strives to save energy and reduce CO 2 emissions at its communications facilities. Launched its first line of environmentally friendly yproducts Telecom Italia Green 4 Reduce our energy consumption in networks by 30% Between 2006 and 2020 Committed to reduce CO 2 emissions by 20% Reduce energy consumption by 15%

5 Environmental Policies & Telco s Costs Kyoto protocol in 1997 introduced a strong objective to take action against global warming. EC Code-of-Conduct (1999) Policies for reducing CO 2 - mandates towards SDOs (M462) define upper bound energy limits for equipment Increasing Energy Costs Infrastructure enhancement estimations for 2020 Telcos devices > 3 times broadband access > 9 times EC Telcos s Energy OPEX Costs* 5 * 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

6 Saving Energy: How and Where How to provide energy efficiency? Match offered capacity to demand Where in telecom systems? 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

7 Energy Efficient Mobile Backhaul BBF 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 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

8 Scope and Contribution of the BBF Initiative Radio BBF TR-221 Mobile Backhaul Architecture Core MME HSS MSC P/S-Gw Planning Equipment Holistic Network-based Management 8 Align RAN and Core Network Energy

9 Energy Efficient Network Planning Place resources/dimension topology: Off-line activity BBF Architecture & Network Virtualization Fewer boxes, node consolidation Unifies 2G/UMTS/HSDPA/LTE on a common IP/packet-based infrastructure Enables infrastructure sharing & wholesale l 9 Reference Architecture BBF TR-221

10 Power Consumption Vs Operational Mode Sleeping : most effective means to save energy 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) 10

11 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 Mobile Backhaul applicability Common for LTE base stations in access and aggregation networks 11 External Behaviour Packet bundling: may introduce delay and packet loss/buffer overflow

12 IEEE Power over Ethernet (PoE) Mechanism Description Delivers power along with data saving ~ W/port IEEE 802.3af-2003 PoE:15.4 W / IEEE 802.3at-2009 PoE: 25.5 W Empowers remote devices: reduce cabling / eliminates AC outlets Provides energy control of attached devices (power-on/off) Mobile Backhaul applicability Relevant l t for small cells without t a power supply Applicable to equipment within the range of PoE power supply 12 External Behaviour RAN/backhaul coordination need for alarm avoidance

13 ONU Power Management in ITU-T PON Mechanism Description Three means of power modes: ITU-T G / G 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 13 External Behaviour:Tight relation between power reduction and SLAs

14 EEE-based Link Aggregation (LAG) Mechanism Description 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 links removed from bundle enter in low idle link state Mobile Backhaul Applicability Used in access and aggregation networks to enhance link capacity decision to remove member links of LAG can be based on observed load 14 External Behaviour LAG removal and addition of links reflects link rate

15 Energy Saving Management Energy saving management refers to: Policies i / functions managed locally, ll 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 Traffic load conditions and network utilization ensure profitable energy savings by identifying off-peak periods Performance at the node and through network management 15

16 Broadband Forum Architectures and Specifications drive Energy-Efficient, Efficient, Interoperable Implementations BBF TR-293: Energy Efficient Mobile Backhaul Planning: Multi-RAN - Virtualization - Consolidation Equipment: Energy proportionalityp Network: Coordination - Control Management: Metering and Monitoring 16

17 17 Thanks! Any Questions?