IEEE j July 2011 Suhwook Kim, LG Electronics Submission Final proposal for j MBANS Authors: Date: July 5, 2011 NameCompanyAddressPhone Suhwook KimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea Junho JoLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea Jaewon LimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea Bonghoe KimLG Electronics LG R&D Complex 533, Hogye- 1dong, Dongan-gu, Anyang-shi, Kyungki-do, Korea Slide 1

IEEE j 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

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

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

IEEE j 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

IEEE j July 2011 Suhwook Kim, LG Electronics Submission MAC enhancement Channel switch notification –Channel switch command with time, channel information Slide 6

IEEE j July 2011 Suhwook Kim, LG Electronics Submission Slide 7 MAC enhancement Channel switch notification Unicast Broadcast/ Multicast

IEEE j July 2011 Suhwook Kim, LG Electronics Submission Slide 8 MAC enhancement MLME-primitives

IEEE j 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.

IEEE j 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

IEEE j 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

IEEE j 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

IEEE j 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