1 / 15

Communication between Wireless Sensor Devices and GNU Radio

Communication between Wireless Sensor Devices and GNU Radio. Gaurav Konchady Sriram Sanka. Outline. Wireless Sensor Networks Motes GNU Radio as Base-station CC1000 RF Transceiver IEEE 802.15.4 Standard Block Diagram Results. Wireless Sensor Networks.

rogan-franco
Download Presentation

Communication between Wireless Sensor Devices and GNU Radio

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Communication between Wireless Sensor Devices and GNU Radio Gaurav Konchady Sriram Sanka

  2. Outline • Wireless Sensor Networks • Motes • GNU Radio as Base-station • CC1000 RF Transceiver • IEEE 802.15.4 Standard • Block Diagram • Results Gaurav Konchady and Sriram Sanka

  3. Wireless Sensor Networks • Network of Spatially distributed sensor devices • Two tiered architecture • Sensor and Base-station nodes Gaurav Konchady and Sriram Sanka

  4. Types of Motes • TelosB, MICA2 and MICAz to be used in project • Motes programmed in TinyOS software platform • Other OSs include SOS, Contiki, Mantis, etc. Gaurav Konchady and Sriram Sanka

  5. GNU Radio as Base-station • Interoperability with heterogeneous motes • Wideband nature of USRP enables multichannel communication • Flexibility in selection of modulation scheme Gaurav Konchady and Sriram Sanka

  6. CC1000 RF Transceiver • Frequency range: 300 – 1000 MHz • FSK modulation with 76.8 kBaud max • Manchester encoding • Integrated bit-synchronizer Gaurav Konchady and Sriram Sanka

  7. TinyOS CC1000 Frame Format • TinyOS and SOS CC1000 frame formats have different fields • Requires changes in CC1000 modulator and demodulator blocks in GNU Radio Gaurav Konchady and Sriram Sanka

  8. IEEE 802.15.4 Standard • MAC and Physical layer protocol for short-distance, low-power, low-data-rate wireless communication • 128 byte maximum MAC frame size • 2400 MHz to 2483.5 MHz frequency range • DSSS employing O-QPSK modulation Gaurav Konchady and Sriram Sanka

  9. TinyOS 802.15.4 T-frame • T-frame differs from the original IEEE 802.15.4 frame format • Requires modifications to 802.15.4 modulator and demodulator blocks in GNU Radio Gaurav Konchady and Sriram Sanka

  10. Project Setup • MICA2 mote sends data to USRP (FLEX400) • USRP extracts payload from CC1000 frame • Payload inserted in an 802.15.4 T-frame • T-frame transmitted by USRP (RFX2400) • Packets received by TelosB mote Gaurav Konchady and Sriram Sanka

  11. Block Diagram FLEX400 CC1000 Demodulator Python Callback USRP Python send_pkt() RFX2400 802.15.4 Modulator Packet Queue Gaurav Konchady and Sriram Sanka

  12. Goals Accomplished • Detecting 802.15.4 frame on USRP using RFX2400 daughterboard • MICA2 to USRP communication • TelosB to USRP communication • MICA2 to TelosB communication via USRP • Future work • TelosB to MICA2 communication via USRP Gaurav Konchady and Sriram Sanka

  13. Results • MICA2 output • USRP output • TelosB base-station output Gaurav Konchady and Sriram Sanka

  14. References • IEEE 802.15.4-2006 standard, http://standards.ieee.org/getieee802/802.15.html • Thomas Schmid, GNU Radio 802.15. 4 En-and Decoding, http://nesl.ee.ucla.edu/fw/thomas/thomas_project_report.pdf • TEP 125 – TinyOS 802.15.4 Frames, http://tinyos.cvs.sourceforge.net/*checkout*/tinyos/tinyos-2.x/doc/html/tep125.html • CC1000 datasheet, http://www.cse.ohio-state.edu/siefast/nest/nest_webpage/datasheet/Chipcon%20-%20CC1000%20Data%20Sheet%20v2.1.pdf Gaurav Konchady and Sriram Sanka

  15. Thank you Questions? Gaurav Konchady and Sriram Sanka

More Related