1. doc.: IEEE 802.15-12-0263-00-004m SubmissionSlide 1 May 2012 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks(WPANs) Submission Title: Preliminary Proposal for TG4m Date Submitted: May 15, 2012 Source: Cheol-ho Shin, Mi-Kyung Oh and Sangsung Choi (ETRI), Soo-Young Chang (SYCA) Contact: chshin@etri.re.krchshin@etri.re.kr Voice: +82 42 860 6831, E-Mail: chshin@etri.re.kr Re: Call for proposals Abstract: This contribution presents a preliminary proposal for the TG4m Purpose: Preliminary proposal to 802.15m 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. doc.: IEEE 802.15-12-0263-00-004m Submission FSK PHY for TG4m (1) FSK based NB PHY –Cover the lower data rate, e.g., 50Kbps ~ 200Kbps –Interoperability Consider 900MHz SUN –Propose to use basically TG4g FSK PHY –Propose to include some reliability enhancing features May 2012 (ETRI)Slide 2

3. doc.: IEEE 802.15-12-0263-00-004m Submission FSK PHY for TG4m (2) Modulation & channel parameters –Mode #1 & #3: same as TG4g –Mode #2: 150Kbps (TG4g)  100Kbps May 2012 (ETRI)Slide 3 Operating Mode #1 Operating Mode #2 Operating Mode #3 Data rate (Kb/s)50100200 ModulationFiltered 2FSK Modulation Index10.5 Channel Spacing (KHz)200400

4. doc.: IEEE 802.15-12-0263-00-004m Submission FSK PHY for TG4m (3) Reliability enhancing features: PHY header –PHR in TG4g FSK PHY – Propose to use one of reserved bits as a parity bit Simply detect PHR error to stop demodulation process May 2012 (ETRI)Slide 4

5. doc.: IEEE 802.15-12-0263-00-004m Submission FSK PHY for TG4m (4) Reliability enhancing features: FEC –TG4g FEC Convolutional code with K=4 It is hard to achieve the theoretical FEC gain in FSK system –TG4m FEC Propose to use convolutional code with K=7 for better performance Reliability enhancing features: Spreading –Propose to use spreading scheme in LECIM FSK PHY (15-12- 0089-05) May 2012 (ETRI)Slide 5

6. doc.: IEEE 802.15-12-0263-00-004m Submission TG4g MR-OFDM Modes May 2012 (ETRI)Slide 6 ParameterOFDM Option 1 OFDM Option 2 OFDM Option 3 OFDM Option 4 Nominal bandwidth (KHz)1094552281156 DFT Size128643216 MCS0 (kb/s) (BPSK rate ½ with 4x frequency repetition) 10050-- MCS1 (kb/s) (BPSK rate ½ with 2x frequency repetition) 20010050- MCS2 (kb/s) (QPSK rate ½ with 2x frequency repetition) 40020010050 MCS3 (kb/s) (QPSK rate ½) 800400200100 MCS4 (kb/s) (QPSK rate 3/4) ­600300150 MCS5 (kb/s) (16-QAM rate ½) -800400200 MCS6 (kb/s) (16-QAM rate 3/4) --600300

7. doc.: IEEE 802.15-12-0263-00-004m Submission Add default Modes to TG4g MR-OFDM Modes May 2012 (ETRI)Slide 7 ParameterOFDM Option 1 OFDM Option 2 OFDM Option 3 OFDM Option 4 Nominal bandwidth (KHz)1094552281156 DFT Size128643216 MCS0 (kb/s) (BPSK rate ½ with 4x frequency repetition) 10050-- MCS1 (kb/s) (BPSK rate ½ with 2x frequency repetition) 20010050- MCS2 (kb/s) (QPSK rate ½ with 2x frequency repetition) 40020010050 MCS3 (kb/s) (QPSK rate ½) 800400200100 MCS4 (kb/s) (QPSK rate 3/4) 1200 600300150 MCS5 (kb/s) (16-QAM rate ½) 1600 800400200 MCS6 (kb/s) (16-QAM rate 3/4) 24001200 600300

8. doc.: IEEE 802.15-12-0263-00-004m Submission Optional Modes for TG4m OFDM Modes May 2012 (ETRI)Slide 8 ParameterOFDM Option 1 OFDM Option 2 OFDM Option 3 OFDM Option 4 Nominal bandwidth (KHz)437622081124624 DFT Size128643216 MCS0 (kb/s) (BPSK rate ½ with 4x frequency repetition) ---- MCS1 (kb/s) (BPSK rate ½ with 2x frequency repetition) ---- MCS2 (kb/s) (QPSK rate ½ with 2x frequency repetition) ---- MCS3 (kb/s) (QPSK rate ½) 3200 --- MCS4 (kb/s) (QPSK rate 3/4) 4800 --- MCS5 (kb/s) (16-QAM rate ½) 6400 - -- MCS6 (kb/s) (16-QAM rate 3/4) 9600 - -- Using 4x over-clock of TG4g MR-OFDM Option 1

9. doc.: IEEE 802.15-12-0263-00-004m Submission Summary FSK PHY –Adopt basically TG4g MR-FSK PHY –Include reliability enhancing features Parity in PHR, FEC with K=7, Spreading OFDM PHY –Add default modes to TG4g MR-OFDM Modes to increase the data rates –Add optional modes using 4x over-clock of TG4g MR-OFDM option 1 to satisfy the data rate of about 10 Mbps May 2012 (ETRI)Slide 9