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Haystack Integration of NFC and DASH7

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Short overview on the evolution of NFC to accommodate broader IoT use cases including security, two-factor authentication and other applications of long range, low power wireless networking.

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Haystack Integration of NFC and DASH7

  1. 1. 1 NFC + DASH7
  2. 2. 2 NFC 13.56 MHz Capacitive Match NFC +
 DASH7 13.56 MHz Cap Match 433 MHz Cap Extension Modern RF interface chipsets are 
 primarily digital. DASH7 uses GFSK modulation, 
 which is similar to NFC modulation. - Digital blocks remain intact In concept, adding DASH7 to NFC is accomplished by adding an Integer-N PLL and a small number of analog switches. - Integer-N PLL for 13.56 MHz input with:
 Divider Ref = 128, Multiplier N = 4096 ± 7 - Analog switches to tune antenna at 13.56 or 433 - DASH7 uses much less output power than NFC 433 MHz DASH7 spectrum is low enough and narrow enough that normal SiO2 fabrication is OK. More information: ht.ly/BSxMN2 NFC + DASH7 Combo Chip Licensing Opportunity DASH7 can be added to an NFC chipset & solution with minimal additions
  3. 3. DASH7 PHY Types 1,2,3 ‣ 433.92 MHz band ‣ Modulation rates: 13.56 MHz / 2n ‣ Channel spacing: 13.56 MHz / 116 DASH7 Transport Layer ‣ Fast multicast data queries ‣ UDP/IP via NDEF DASH7 Data Layer ‣ NDEF-enabled filesystem ‣ File security & encryption NFC + DASH7 Integration Potential NFC PHY ‣ 13.56 MHz band ‣ Modulation rates: 13.56 MHz / 2n ‣ Single Channel NFC Transport Layer ‣ Fast multicast data queries ‣ Single application model NFC Data Layer ‣ NDEF-enabled data blocks ‣ Block security & encryption Key Point: DASH7 & NFC congruence in PHY and Data Loop antennas are suitable for both PHYs
  4. 4. DASH7 PHY Types 1,2,3 ‣ 433.92 MHz band ‣ Modulation rates: 13.56 MHz / 2n ‣ Channel spacing: 13.56 MHz / 116 DASH7 Transport Layer ‣ Fast multicast data queries ‣ UDP/IP via NDEF DASH7 Data Layer ‣ NDEF-enabled filesystem ‣ File security & encryption NFC PHY ‣ 13.56 MHz band ‣ Modulation rates: 13.56 MHz / 2n ‣ Single Channel NFC Transport Layer ‣ Fast multicast data queries ‣ Single application model NFC Data Layer ‣ NDEF-enabled data blocks ‣ Block security & encryption Loop antennas are suitable for both PHYs
  5. 5. DASH7 & NFC Have Complementary Data Representation Both support NDEF, DASH7 has compatible Presentation Layer as well 5 Session Core Communication 4 Transport 3 Network 2 Data Link 7 Application Core-apps + NDEF + UDP 6 Presentation Core Database / Filesystem Applications using NDEF can interface with DASH7 APIs and Data Elements without the need for 3rd- party middleware. NFC communication can also store data in the DASH7 Core Database just as it would into normal NFC data blocks. NFC Middleware 5
  6. 6. 6 OSI Layer 7 Application 6 Presentatio n 5 Session 4 Transport 3 Network 2 Data Link 1 Physical DASH7 + NB-IoT Device NDEF + UDP/IP + Custom DASH7
 low power low latency ad-hoc LAN networking LPWAN networking MSK Downlink, OFDM uplink DASH7 + LoRa Device NDEF + UDP/IP + Custom DASH7
 low power low latency ad-hoc LAN LoRaWAN low power high latency cellular WAN + Adaptive RS Encoding LoRa CSS DASH7 can operate on the LoRa radio PHY and also in parallel with the LoRaWAN stack. In this integration, DASH7 adds important bursty communication features to LoRaWAN, much the way data features were added to 3G cellular. The emerging NB-IoT PHY and Data Link specification is an ideal fit for the DASH7 stack. DASH7 networking already supports all the requirements of the NB-IoT draft spec, and it is capable of providing LPWAN and LAN features to NB-IoT. DASH7 + NFC Device NDEF + UDP/IP + Custom DASH7
 low power low latency ad-hoc LAN LPWAN NFC low power low latency proximity RFID Hybrid PHY DASH7 is designed to work in a hybrid environment with NFC. Extending an NFC device to support DASH7 was an early design goal. NFC’s proximity communication is complimented by DASH7’s long range networking capabilities. 6
  7. 7. 7 Contact: Patrick Burns pat@haystacktechnologies.com (650) 315-3026 More Resources: • www.haystacktechnologies.com • LoRaWAN vs. Haystack http://bit.ly/2hjJE5T •The Indoor-Outdoor IoT http://bit.ly/2b65gRQ •The IoT Hunger Games http://bit.ly/1IkYRtO •Disrupting the IoT http://bit.ly/2cHRXFH •Haystack’s open source firmware stack: http://bit.ly/1p5OjJg

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