May 2009 doc IEEE 802 15 09 0317

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Project: IEEE P 802. 15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Block based PHY and Packet Transmission for Low Data Rate In-body WBAN Date Submitted: [4 MAY 2009] Source: [Dong-Sun Kim 1, Jong-Ik Song 1, Tae-Ho Hwang 1, Young-Hwan Kim 1, Jae-Gi Son 1, Sang-Jin Hyun 1, Ha-Joong Chung 1 and Yangmoon Yoon 2] Company: [KETI 1, KORPA 2] Address : [KETI 1 ; #68 Yatap-dong Bundang-gu, Seongnam-si, Gyeonggi-do 463 -816, South Korea, KORPA 2 ; 78 Garak-dong, Songpa-gu, Seoul, 138 -803, South Korea] Voice: [+82 -31 -789 -73841, +82 -2 -2142 -21622], FAX: [+82 -31 -789 -75591, +82 -2 -2142 -21992] E-Mail: [dskim@keti. re. kr 1, yoon 001@paran. com 2] Re: [] Abstract: Key requirements of the BAN standards effort, including power, cost and throughput scalability, can be addressed using a scalable block frame structure based on variable block FEC. In addition, BCH encoded 2 FSK modulation scheme enable simple structure, low power consumptions and low cost transceiver implementation under inbody communication channel. Purpose: This document is intended as a proposal for addressing the requirements of the TG 6 standard. Notice: This document has been prepared to assist the IEEE P 802. 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 P 802. 15. Submission H. J Chung, KETI Slide 1 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Contributors Name E-Mail Affiliation Dong Sun Kim dskim@keti. re. kr KETI Jong-Ik Song jisong 96@hotmail. com KETI Tae-Ho Hwang taeo@keti. re. kr KETI Young-Hwan Kim yhkim 93@keti. re. kr KETI Jae Gi Son jgson@keti. re. kr KETI Sang-Jin Hyun brittlediamond@gmail. com KETI Ha-Joong Chung chunghj@keti. re. kr KETI Yangmoon Yoon yoon 001@paran. com KORPA KETI : Korea Electronics Technology Institute KORPA : Korea Radio Promotion Agency Submission H. J Chung, KETI Slide 2 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Presentation Outline • Applications for low data-rate in-body WBAN • Regulations for 400 MHz MICS • Comparison of Modulations • Error control frame for Low-data-rate In-body Communication • Error Control Frame Structure • MAC Channel Access • Topology for Implantable Devices • Scalable Packet • Conclusion • Reference Submission H. J Chung, KETI Slide 3 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Applications for Low-data-rate In-body WBAN • Applications for Implantable BAN - Deep Brain Stimulator - Implantable Cardioverter Defibrillator - Pacemaker - Drug-Delivery Submission Application EMG Target Data Rate Latency BER 32 Kbps < 250 ms < 10 -10 (1 KHz sample, 16 -bit ADC, 2 channels) Deep Brain Stimulator < 320 Kbps < 250 ms < 10 -10 Drug Delivery < 16 Kbps < 250 ms < 10 -10 ECG 192 Kbps (6 Kbps, 32 channels) < 250 ms < 10 -10 H. J Chung, KETI Slide 4 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Regulations for 400 MHz MICS • International Reference – ITU-R SA 1346, Sharing between the Meteorological Aids Service and Medical Implant Communications Systems(MICS) operating in the Mobile Service in the Frequency Band 401 -406 MHz • US standards – US FCC Regulations, available from www. fcc. gov : – 47 CFR 95. 628 Scenario Description Frequency Band Channel Model S 1 Implantable to Implantable 402 -405 MHz CM 1 S 2 Implantable to Body Surface 402 -405 MHz CM 2 S 3 Implantable to External 402 -405 MHz CM 2 S 4 Body Surface to Body Surface(LOS) 13. 5, 50, 400, 600, 900 MHz 2. 4, 3. 1 -10. 6 GHz CM 3 S 5 Body Surface to Body Surface(NLOS) 13. 5, 50, 400, 600, 900 MHz 2. 4, 3. 1 -10. 6 GHz CM 3 S 6 Body Surface to External (LOS) 900 MHz 2. 4, 3. 1 -10. 6 GHz CM 4 S 7 Body Surface to External (NLOS) 900 MHz 2. 4, 3. 1 -10. 6 GHz CM 4 – FCC add adjacent spectrum(401~402 & 405~406 MHz) for MICS March 19, 2009, By report and order(FCC 09 -23) Submission H. J Chung, KETI Slide 5 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Comparison of Modulations • Simulation results under channel model 2 – BPSK, 2 FSK, 4 FSK • System configuration – CM 2 400 MHz PL model • • link budget – Carrier Frequency : 403. 5 MHz – BW : 300 k. Hz – MCS • • • – – – Submission 10 cm away from the body surface, FSPL can be added CM 2. BFSK – coherent / non-coherent BPSK – hard decision 4 FSK – coherent / non-coherent Noise Figure : 5 d. B HW loss margin : 5 d. B Thermal noise : -174 d. Bm Tx power : 25μW Antenna Gain : 0 d. B H. J Chung, KETI Slide 6 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Comparison of Modulations • Simulation results for Different demodulations [AWGN] – BPSK, 2 FSK, 4 FSK Submission H. J Chung, KETI Slide 7 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Error control frame for Low-data-rate In-body Communication • Design objective – Scalable packet size • Advantage : In highly attenuated in-body model, scalable block based transmission would be better than fixed packet based transmission. • Bitmap based data-block management – Power efficiency modulation – High reliability • Header : 16 byte, BCH(128, 120) • Data : variable block length (Max block FEC: BCH(256, 248)) • Error control flow using block map based frame structure. – Bandwidth efficiency modulation • 2 FSK Submission H. J Chung, KETI Slide 8 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 MAC Channel Access • Tow type of device – Coordinator, Implantable Device • Coordinator must scan before transmission – CCA(carrier/energy) each channel over 10 msec • Data transmission – Block map based transmission • Binary Sequencing • 1 bit Flow Control – Frame Pending or stop transmission • 48 bit address information – 16 bit BAN ID, 32 bit transceiver ID Submission H. J Chung, KETI Slide 9 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Error Control Frame Structure • • • Header FEC for implantable devices 32 bit Bitmap Block for 32 data blocks 16 bit Ban ID : Medical Service ID 32 bit Transceiver ID : 232 = 4 G Scalable Block Size : • Num of bits in Block : 8/16/32/64/128/256 Submission H. J Chung, KETI Slide 10 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Topology for Implantable Devices • Maximum Number of Nodes – Under 10 Nodes in 2 m (Address: 232 Nodes) • Star Topology D 0 – Indirect Transmission – Broadcast – Multi-hop Link Wakeup D 3 D 2 C Wakeup C D Wakeup Data [Coordinator / Device] Submission [Indirect Transmission] D 1 H. J Chung, KETI Slide 11 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Channel Access Sequence Diagram Submission H. J Chung, KETI Slide 12 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Retransmission Mechanism Submission H. J Chung, KETI Slide 13 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Flow Control Submission H. J Chung, KETI Slide 14 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Scalable Packet • PER comparison of variable packet size – Variable packet sizes are not issue under path loss + shadow model [CM 2] Submission H. J Chung, KETI Slide 15 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Scalable Packet • PER comparison of variable packet size – Variable packet sizes are not issue under path loss + shadow model [CM 2] Submission H. J Chung, KETI Slide 16 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Conclusion • Transceiver with error control enabled scalable frame block decreases retransmission packet size and increases duty efficiency. • Use 2 FSK combined with block FEC at low data rate to let simple receiver structure and implementation. • This presentation introduces key scheme to be applicable to a standard of WBAN Submission H. J Chung, KETI Slide 17 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA

May 2009 doc. : IEEE 802. 15 -09 -0317 -01 -0006 Reference • • • Kamya Yekeh Yazdandoost and Ryuji Kohno, “Channel Model for Body Area Network(BAN)”, 802. 15 -08 -0780 -09 -0006, April 2009. Sukor. M, Ariffin. S, , “Performance Study of Wireless Body Area Network in Medical Environment, ” Second Asia International Conference on, 2008 doc. IEEE 802. 15 - 08 -0 -00 -0006 doc. IEEE 802. 15 -08 -0689 -00 -0006 FCC add adjacent spectrum(401~402 & 405~406 MHz) for MICS March 19, 2009, By report and order(FCC 09 -23) FCC, Medical implant communications, January 2003, http: //wireless. fcc. gov/services/index. htm? job=service_home&id=medical_implant Arthur W. ASTRIN, Huan-Bang LI, and Ryuji KOHNO, “Standardization for Body Area Networks, ” IEICE TRANS. COMMUN. , Vol. E 92 -B, No. 2, pp. 366 -372, February 2009 Tolga Yalcin, and Netlin Ismailoglu, “A Low-Power System-on-Chip for Telecommunications : Single Chip Digital FM Receiver/Demodulator IP, ” The thirty-Third Asilomar Conference on Signals, Systems, and Computers, Vol. 1, pp. 24 -27, Oct. 1999 John. G. Proakis, "Digital Communications 2 nd Edition. ", Mcgraw Hill, ISBN-10 0070509379 Submission H. J Chung, KETI Slide 18 D. S Kim, J. I Song, T. H Hwang, Y. H Kim, J. G Son, S. J Hyun, Y. M Yoon, KORPA