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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [PHY p re-proposal for PAC low rate services ] Date Submitted: [ May 2013 ] Source: [ Tae-Joon Park *, Jae-Min Ahn** , Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang*]

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [PHY pre-proposal for PAC low rate services] Date Submitted: [May 2013] Source:[Tae-Joon Park*, Jae-Min Ahn**, Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang*] Company: [*ETRI, **Chungnam National Univ.] E-Mail:[*tjpark@etri.re.kr, **jmahn@cnu.ac.kr] Re: [] Abstract: Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15.

  2. PHY pre-proposal for PAC low rate services Tae-Joon Park*, Jae-Min Ahn**, Keun Hyung Lee*, Wun-Cheol Jeong*, Chang-Sub Shin*, Hoyong Kang* *ETRI, **Chungnam National Univ

  3. Target services • Social Networking • Presence indicator with updates • SHOPPING/ ENTERTAINING – Advertisement • Commercial Broadcast • SMART ENVIRONMENT - Home/ Office (Device based) • Personalized machine confguration and Management (smart office or home) - no S/W downloads • HEALTH / Energy- Monitoring/Service • Large network machine type communication • Peer-aware Monitoring/Assistance • Public Safety • Support/Service • Hazard Notification • Public Emergency • TRAFFIC/TRANSPORTATION - Road/Train/Airport • Police/Public Helps • Roadside Assistance - Congestions, Accident (fast), Event Communication • Interactive Transportation Management

  4. Requirements • Especially for Emergencies : • Longer battery life • Relatively low rate • Simple HW • Relatively longer distance • Viability is more important than the transmission rate !

  5. Encoding • Discovery mode PHY • As simple as possible • Error detection and retransmission only • Reducing the decoder complexity • 8-bit CRC would be OK • Communication mode PHY • Optimized for low energy services • Error control coding • Adaptive to channel change • Multi-rate • Asymmetric topology

  6. Preamble • Purpose of preamble • Signal detection • AGC • synchronization • AFC : frequency synchronization • Symbol synchronization • Frame synchronization • Etc. • Preamble sequence candidates • CAZAC sequence • M-sequence • Barker code • Gold code • Etc.

  7. Example of transmitter structure • SHR : Common Preamble, SFD(mode) • PHR/PSDU : Discovery / Communication mode Communication mode information Error control coding Spreading/ scramble MUX Modulation Modulated Signal Add CRC Scramble Discovery mode information Preamble

  8. PHY parameters • Band candidates : Sub-1GHz, 2.4GHz • Data rate and Bandwidth • Discovery mode PHY • 50Kbps, 200KHz • Communication mode PHY • Multi-rate • Ex) 50/100/200/400 Kbps, 400 KHz

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