Doc.: IEEE 802. 15-09-0482-02-004g Submission July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 1 Project: IEEE P802.15 Working Group.

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doc.: IEEE g Submission July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Future-Proof Platform: Introduction & Conclusion Date Submitted: July, 2009 Source: Emmanuel Monnerie, Roberto Aiello Company: Landis+Gyr, Self Mill Creek Avenue, Alpharetta, GA USA Voice: , Re: IEEE Task Group 4g Call for Proposals (CFP) on 22 January, 2009 Abstract:This presentation summarizes the advantages of OFDM for SUN Purpose: Proposal for consideration by the TG4g Notice:This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P

doc.: IEEE g Submission July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 2 A Future-Proof Platform for Smart Utility Networks Introduction & Conclusion Emmanuel Monnerie & Roberto Aiello Contributors: Roberto Aiello [Independent], Sangsung Choi [ETRI], Bob Fishette, Michel Veillette [Trilliant], Rodney Hemminger [Elster], David Howard [On-Ramp], Bob Mason [Elster] Rishi Mohindra [MAXIM], Emmanuel Monnerie [Landis & Gyr], Partha Murali [Redpine Signal], Steve Shearer [Independent], Shusaku Shimada [Yokogawa Electric Co.], Kendall Smith [Aclara]

doc.: IEEE g Submission July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 3 SUN requirements Future-Proof Platform Merged proposal Characteristics of OFDM Advantages and disadvantages of OFDM Benefits of Link Robustness Better Protection against Multipath Link Margin versus Data rate What is covered in this merged proposal? Some flexible features Conclusions (3 slides) Possible Next Steps References Outline

doc.: IEEE g Submission Merged Proposal This merged proposal combines the following individual proposals: g Sangsung Choi, Cheolho Shin and Byounghak Kim (ETRI) g/ g Steve Shearer (self) g Emmanuel Monnerie (Landis+Gyr) g Rishi Mohindra (MAXIM) July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 4

doc.: IEEE g Submission SUN requirements TG4g PAR: –Achieve the optimal energy efficient link margin –Principally outdoor communications –Keep infrastructure to a minimum –Need for maximum range as many devices are located sub-optimally (meters located in highly obstructed, high multipath locations with inflexible antenna orientation) –Data rate of at least 40 kbits per second but not more than 1000 kbits per second –Largest number of orthogonal traffic carrying channels (ie spectrally efficient modulation) July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 5

doc.: IEEE g Submission Future-Proof Platform Future-Proof views and roadmap for higher data rates. Coverage from low data rates (40kbps) to higher data rates (>100kbps and less than 1Mbps). Consideration for different types of devices and different applications (AC powered meter, battery powered meter, network device, in-home device). Availability for growth in data rate, modulation scheme, future band allocation/regulatory changes July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 6

doc.: IEEE g Submission Benefits of link robustness Lower system cost (reduced need for repeaters) Lower energy consumption (less retransmissions, reduced “Tx ON” time) Lower system latency/increased data rates July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 7

doc.: IEEE g Submission Better Protection against Multipath Each symbol includes a Guard Interval with a greater duration than the ISI. This guard interval is removed by the receiver, thus eliminating, at the same time, the ISI. July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 8 Obstacle (Building, Mountain, etc…) Tx Rx Symbol N Symbol N+1 Symbol N Symbol N+1 Symbol N Symbol N+1 Zone of InterSymbol Interference Transmitted Symbols Received Symbols OFDM

doc.: IEEE g Submission Characteristics of OFDM Adopted & proven many times –Asymmetric DSL (ADSL) –IEEE a, g & n –IEEE (WiMax) –Power Line Networking (HomePlug and HomePlug A/V) –Digital Audio (DAB) & Video (DVB), HD Radio –Many others Typically chosen for multipath characteristics, not high bit rate Higher complexity required for processing multiple carrier is typically balanced by less processing to mitigate multipath effects July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 9

doc.: IEEE g Submission Advantages and disadvantages of OFDM Pros –Spectrally efficient modulation –RF Robustness and Performance –Scalable Data rates –Adaptability to regulatory considerations Cons –More complex PHY definition/specification for the device * * better multipath characteristics usually simplify system complexity July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 10

doc.: IEEE g Submission What is covered in this merged proposal? PHY parameters: modulation, interleaving and encoding, data rate, symbol rate, guard interval, short training field, long training field, tone definition, signal bandwidth. Regulatory considerations: USA, Europe, Korea, Japan, TV white space. Performance and simulations: Bit Error Rate, Packet error rate, channel characteristics. Implementation considerations: Relative cost, power consumption. July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 11

doc.: IEEE g Submission Link Margin versus Data Rate Typically: Low data rate OFDM (<100 kbps) addresses long range, rural applications. Medium data rate OFDM (around 100kbps) address most deployments in suburban and urban areas. Higher data rate (above 100/200 kbps) address the network traffic through pole top devices. Practically: The system implementer and the chip manufacturer can design a solution with the appropriate sets of data rates. Each radio can automatically compute the required link margin, thus the appropriate data rate. July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 12

doc.: IEEE g Submission Some flexible features Channel Spacing: We recommend a band agnostic approach as defined in doc # 453 from C. Seibert (SSN). PHY Header: We recommend at least the following: –Error protection of the PHY header –11 bits of length field –Possibly other fields (Network ID, Scrambler, …) as defined in other merged proposals. July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 13

doc.: IEEE g Submission Detailed Presentations July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 14

doc.: IEEE g Submission Conclusions Future-Proof Platform Widely adopted and proven OFDM modulation schemes From network devices to battery-powered devices Low and high data rate options Wide regulatory coverage High robustness for outdoor applications and long range communication Compatibility with low cost, low complexity and low power SUN requirements July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 15

doc.: IEEE g Submission Worldwide Coverage International 2.4GHz (FCC Part ) US 915-ISM band (FCC Part ) Europe band (ERC REC70-03/ETSI EN ) Japan MHz (ARIB T-96) China MHz Korea MHz (Korean Regulation ) TV White Space (Multiple Regions) Others domains thanks to a band agnostic approach July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 16

doc.: IEEE g Submission Outdoor, Reliability & Battery Operation July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 17 Reliability Separation from 2.4GHz band entertainment gadgets. High sensitivity & link margin. Diversity: Frequency, time & space Reliability Separation from 2.4GHz band entertainment gadgets. High sensitivity & link margin. Diversity: Frequency, time & space Outdoor Operation Adequate coverage area and sufficient one hop reach. Good propagation characteristics Multiple frequency options for different regions and licensing schemes Outdoor Operation Adequate coverage area and sufficient one hop reach. Good propagation characteristics Multiple frequency options for different regions and licensing schemes Battery Operation Long battery life: Low power LSI integration Quick operation: FrameTx, Rx, CCA & everything Energy saving protocol Battery Operation Long battery life: Low power LSI integration Quick operation: FrameTx, Rx, CCA & everything Energy saving protocol OFDM in sub-1-GHz is the right fit for SUN

doc.: IEEE g Submission Merging with other proposals Interoperability features (MAC and PHY) with existing/proprietary systems and within devices operating in different modes OR Definition of different PHY modes and selection of an “independent” default mode July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 18

doc.: IEEE g Submission Q&A July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 19

doc.: IEEE g Submission References TG4g PAR ( file/P g.pdf) file/P g.pdf g Emmanuel Monnerie (Landis+Gyr) g Steve Shearer (self) g Sangsung Choi, Cheolho Shin and Byounghak Kim(ETRI) g G. Flammer (SSN), E. Monnerie (L+G), S. Shearer, S. Shimada (Yokogawa Electric Corp.) g/ g Steve Shearer (self) g Emmanuel Monnerie (Landis+Gyr) g Rishi Mohindra (MAXIM) July 2009 Emmanuel Monnerie (Landis+Gyr), Roberto Aiello (Self)Slide 20