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Procomuns 2016

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Presentation from i2cat speaking at the procomuns conference in Barcelona on the 11th of March 2016 in a session on IoT.

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Procomuns 2016

  1. 1. Josep Paradells, Daniel Camps, Joaquim Oller, Artur Serra, 11/03/2016 A peering node for improving LoRa networks
  2. 2. Outline • The I2CAT Foundation • Some key aspects about Low Power Wide Area Networks (LPWAN) • LoRa Technology Overview • Peering in networks • Peering with LoRa • Some comments • Some conclusions
  3. 3. I2CAT Foundation • A private non profit organisation • Created by several research groups of UPF, UPC and URL more than 15 years ago and moved to a foundation 12 years ago • Devoted to the research and development of the Internet for (to) Catalonia (I2CAT) • More that 50 people working in the project • With a multiplicative factor (total budget / government contribution) of 8
  4. 4. I2CAT Foundation • Promoting the living labs in Europe • Involvement of the user from the initial steps of the development of a new application/service • Participation on the Barcelona Laboratori and the EU project Open4Citizens • Development of video streaming platforms on open source • Development of Internet of Things protocols contributing to Contiki os • Usage of LoRa for elevator maintenance at the UPC
  5. 5. I2CAT Foundation • Contribution to Internet Engineering Task Force (IETF)
  6. 6. I2CAT Foundation • Contribution to Internet Engineering Task Force (IETF)
  7. 7. 7 Low Power WAN (LPWAN) Motivation LPWAN features: • Long Range • Low Data Rate • Low Power Consumption • Scalability RANGE CAPABILITY BANDWID TH LPWAN LoRa Technology Overview
  8. 8. 8 Low Power WAN (LPWAN) Technologies LPWAN IEEE 802.11ah NB-LTE EC-GSM LoRa Technology Overview
  9. 9. 9 LoRa and the LoRa Alliance (1/2) • LoRa is a novel radio modulation patented by • The LoRa modulation is based on Chirp Spread Spectrum (CSS) technology and the main benefit is a very high sensitivity • The LoRa modulation defines only the PHY level of the communications stack Technology Rx sensitivity Data rates Wi-Fi -84 dBm < 54 Mbps BLE -90 dBm < 1Mbps -109 dBm < 80 Kbps LoRa -135 dBm 300 bps – 10 Kbps LoRa Technology Overview
  10. 10. 10 LoRa and the LoRa Alliance (2/2) • The LoRa Alliance is an industry consortium launched at MWC’15 with the following Sponsor Members: • The LoRa Alliance has defined the LoRaWAN comprising MAC and network stack around the LoRa modulation. LoRaWAN is open ! • The LoRa Alliance has recently launched a certification program LoRa Technology Overview
  11. 11. • LoRa Spreading Factors 11 LoRa Channels and Spreading Factors (SFs) • Sub-GHz: ETSI ERC 70-03 • What does the duty cyle mean? • I just transmitted a 0.5 s long frame on the g1 sub-band. I have to be silent during the following 49.5 s (some freedom in computing the total time) Sub-band Freq. Range (MHz) Conditions (Pwr/DC) g1 868 – 868.6 14 dBm @ 1% g2 868.7 – 869.2 14 dBm @ 0.1% g3 869.4 – 869.65 27 dBm @ 10% g4 869.7 - 870 14 dBm @ 1% Spreading Factor (SF) Bit Rate SF=12 250 bps SF=11 440 bps SF=10 980 bps SF=9 1.7 Kbps SF=8 3.1 Kbps SF=7 5.4 Kbps Range LoRa:: 10 channels of 125 KHz LoRa Technology Overview
  12. 12. Multi-Channel and Multi-Rate operation Channel 1 Channel 2 Channel 3 SF 7 SF 9 SF 12 SF 7 SF 9 SF 12 SF 7 SF 9 SF 12 SF7 --SF8 --SF9 --SF1 0 --SF1 1 --SF1 2 -- SF7 --SF8 --SF9 --SF1 0 --SF1 1 --SF1 2 -- SF7 --SF8 --SF9 --SF1 0 --SF1 1 --SF1 2 -- 0 s 1 s 2 s 3 s 4 s Channel1Channel2Channel3 Time Note: End devices may have a set of configured channels and will use the one available at any moment LoRa Technology Overview
  13. 13. 13 LoRaWAN Network Architecture • LoRa Server: • Maintains association with end node • Configures data rates • Removes duplicates • Handles security and access control • Interfaces with applications Gatewa y End Device End Device End Device End Device End Device Gatewa y End Device NetServer End Device IP connectionIP connection • LoRa Gateway: • Maintains radio connectivity • Acts as transparent bridge • More than one gateway per end device posible • Enables seamless network updgrade LoRa Technology Overview
  14. 14. Peering in networks • Peer to peer exchange of data • Used in Internet as a way to skip transit traffic
  15. 15. Peering in LoRa • A end device transmission may be received by more gateway (from the same organisation or from different organisation) NetServer NetServer Peering node
  16. 16. 16 • Peering results in: • Better coverage • Overlapping may be common • Lower traffic • Less application retransmissions • Supports mobility in a more efficient manner • Peering agreement between private or public organization • Mapping LoRa network ID with organization • No specific connection is needed, just be connected to Internet • Technological aspects • Is better if Gateways are listening in all 10 channels Some comments
  17. 17. 17 • LPWAN is here to stay • Is a key technology for IoT • In the unlicensed band actors are taking positions: SIGFOX, LoRa, and … 802.11ah • Performance will depend on interference patterns • Can die from its success • Collaboration is always better than competition • Peering is an example Some conclusions
  18. 18. Josep Paradells, Daniel Camps, Joaquim Oller, Artur Serra,

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