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May 2011. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Samsungs Pre-proposal for 802.15.4J] Date Submitted: [2 May 2011]

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May 2011

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

Submission Title: [Samsungs Pre-proposal for 802.15.4J]

Date Submitted: [2 May 2011]

Source: [Kiran Bynam, Seung Hoon Park, Ranjeet.K.Patro, Thenmozhi Arunan, Dr.Euntae Won], Company [Samsung Electronics]

Address [Bagmane Tech Park, CV Raman nagar, Bangalore]

Voice:[+91 9986154930], FAX: [+91 80 41819000], E-Mail:[kiran.bynam@samsung.com]

Re: [Call for Proposals, March 2011]

[If this is a response to a Call for Contributions, cite the name and date of the Call for Contributions to which this document responds, as well as the relevant item number in the Call for Contributions.]

[Note: Contributions that are not responsive to this section of the template, and contributions which do

not address the topic under which they are submitted, may be refused or consigned to the “General Contributions” area.]

Abstract: [This document describes the Samsungs Pre-Proposal to 802.15.4j]

Purpose: [For consideration by TG 4j group]

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.

Kiran Bynam, Samsung

pre proposal for ieee 802 15 4j

Pre-Proposal for IEEE 802.15.4J

Kiran Bynam, Ranjeet K Patro, Seung-Hoon Park, Thenmozhi Arunan, Dr.Eunte Won

Kiran Bynam, Samsung

outline

May 2011

outline
  • Technical Requirements
  • Modulation
  • Spectrum characteristics
    • Will it fit new regulations ?
  • Tx Chain
    • Performance
    • Link Budget
  • Channel Spacing
  • MAC requirements
  • Summary

Kiran Bynam, Samsung

technical requirements and scope

May 2011

Technical Requirements and scope
  • PHY and MAC amendment for 802.15.4 for support of medical devices in MBAN spectrum
    • Secondary usage of MBAN spectrum
    • Reusability of 802.15.4 protocol and PHY to enable the shifting of spectrum to 2.4 GHz ISM band in case of congestion in MBAN spectrum
    • Spectrum usage limited to data transmission intended for diagnosis, treatment of patients

Kiran Bynam, Samsung

modulation

May 2011

Modulation
  • To be complaint with 802.15.4 , same modulation used in 2.4 GHz can be employed
    • OQPSK modulation
      • 32 I and Q chips for 250 kbps
    • More reusability with the zigbee PHY
      • The MAC can smoothly transfer between MBAN spectrum and 2.4 GHz spectrum in case of congestion in MBAN spectrum

Kiran Bynam, Samsung

spectral characteristics

May 2011

Spectral Characteristics
  • Spectrum of OQPSK modulation used in 802.15.4 is able to achieve 20 dB bandwidth of 5 MHz

26 dB

Kiran Bynam, Samsung

spectral characteristics with finite resolution

May 2011

Spectral characteristics with Finite resolution
  • 24 dBr at |f-fc| > 2.5 MHz

Kiran Bynam, Samsung

transmitter block diagram

May 2011

Transmitter Block Diagram

802.15.4 PHY

FEC

Symbol

Mapper

(4 bit)

OQPSK

modulation

To pulse shaping & AFE

  • Simple 16-ary based OQPSK as in 802.15.4
  • Constant envelope, continuous phase modulation
  • FEC should be added to increase the reliability of data
    • Systematic codes preferred
    • Optional decoder at receiver

Kiran Bynam, Samsung

performance characteristics for 802 15 4

May 2011

Performance characteristics for 802.15.4
  • 2 dB SNR
  • -3 dBm output power
  • Receiver sensitivity -85 dBm
  • Performance Criteria – 1% PER with 20 bytes packet
  • Range (Channel index=2) – 125 m in awgn channel
  • Range (Channel index=3) – 25 m in awgn channel

Kiran Bynam, Samsung

channel spacing

May 2011

Channel Spacing
  • 5 MHz channel spacing
  • 8 channels in 40 MHz band
  • Default channel always at 2390-2395 MHz band

Kiran Bynam, Samsung

mac requirements
MAC Requirements
  • Low power consumption
    • Low duty cycling
  • QoS for medical data
    • Enhanced channel access scheme
    • Robust mesh networking
  • Mobility
    • Seamless monitoring
  • Support for easy pairing
    • Intuitive/autonomous device discovery
    • simple association procedure

Kiran Bynam, Samsung

summary

May 2011

Summary
  • Reuse of 802.15.4 Modulation scheme
  • Proposal for use of low complexity systematic block codes
  • Channel spacing
  • Use of default channel for pairing

Kiran Bynam, Samsung