1. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Final proposal for 802.15.4j MBANS Authors: Date: July 5, 2011 NameCompanyAddressPhoneemail Suhwook KimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea +82-31-450- 1936 suhwook.kim@lge.com Junho JoLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea +82-31-450- 1911 junho.jo@lge.com Jaewon LimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea +82-31-450- 1936 jaewon.lim@lge.com Bonghoe KimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea +82-31-450- 4131 bonghoe.kim@lge.com Slide 1

2. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Slide 2 MBAN Regulation 2360~2390 MHz –Indoor only, 1mW/MHz Tx power limit –Electronic key/Beacon: an electronic frequency authorization generated by the MBANS coordinator 2390~2400 MHz –Anywhere, 20mW/MHz Tx power limit

3. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Slide 3 PHY Reuse of existing 802.15.4 implementations operating in the 2450 MHz band –DSSS PHY employing O-QPSK modulation –F c =2405 + 5(k-11), for k=11,12, …, 26 –62.5 ksymbol/s –250 kbps

4. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Problem Statement Necessary function for MBANS –Enablement mechanism –Deenablement mechanism Baseline spec (802.15.4-2006) can support these function without any changes –Beacon frame –(De)Association scheme Slide 4

5. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Problem Statement However, some characteristic of MBANS should be considered –Long beacon period: Long scanning time (additional power consumption for scanning) –Channel transition by MBAN coordinator –Heterogeneous channelization We cannot guarantee network re-access time after deenablement Slide 5

6. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission MAC enhancement Channel switch notification –Channel switch command with time, channel information Slide 6

7. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Slide 7 MAC enhancement Channel switch notification Unicast Broadcast/ Multicast

8. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Slide 8 MAC enhancement MLME-primitives

9. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Slide 9 MAC enhancement Channel switch information –Timestamp: The time at which the channel switching will be occurred. –Logical Channel: The logical channel which is chosen by the coordinator and the MBAN device shall switch to. –Channel Page: The channel page which is chosen by the coordinator and the MBAN device shall switch to.

10. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission MAC enhancement Guaranteed Time Slot (GTS) –Drawback Not-suitable for long interval application Inefficient resource allocation Slide 10 Legacy GTS

11. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission MAC enhancement Periodic GTS –Advantage Suitable for MBANS application Efficient resource allocation Low additional overhead Slide 11 Periodic GTS

12. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Channelization Channelization issue –Guard band (0.5 MHz) –Overlapped, non-overlapped –Number of channel Our proposal for MBAN channelization Slide 12

13. IEEE 802.15-11-0472-00-004j July 2011 Suhwook Kim, LG Electronics Submission Conclusion We this submission, we propose the MAC enhancement for MBANS –Channel switch notification –Periodic GTS This proposal is based on reused PHY and our channelization model Slide 13