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MMAC T71 Ad hoc WG Report

MMAC T71 Ad hoc WG Report. Yasuhiko Inoue, NTT. MMAC Overview. MMAC ( M ultimedia M obile A ccess C ommunication Systems Promotion Council) An organization in the ARIB (Association of Radio Industries and Businesses). Activities: Investigation and study on system specifications

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MMAC T71 Ad hoc WG Report

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  1. MMAC T71 Ad hoc WG Report Yasuhiko Inoue, NTT Y.Inoue, NTT

  2. MMAC Overview • MMAC (Multimedia Mobile Access Communication Systems Promotion Council) • An organization in the ARIB (Association of Radio Industries and Businesses). • Activities: • Investigation and study on system specifications • Demonstrative experiment • Information exchange and popularization activities, etc • Working Groups • High Speed Wireless Access • 5GHz Mobile Access (Wireless Access and Wireless LAN) • Wireless Home-Link (Wireless 1394) http://www.arib.or.jp/mmac/e/ Y.Inoue, NTT

  3. T71 Ad hoc Working Group • ARIB STD-T71 • Technical requirements and specifications for IEEE 802.11a systems to operate in Japan. • T71 Ad hoc WG has been created to revise the current ARIB STD-T71 to incorporate the technical requirements for 5GHz Band Wireless Access systems. • Chief: Mr. Noboru Matsumoto, SpeedNet • Member companies: Atheros, Canon, Denso, Fujitsu, Hitach Cable, Intel, Japan Telecom, JRC, Mitsubishi, Murata, NEC, NTT, TOYOCOM, Panasonic, Samsung, SpeedNet, TDK, Toshiba, TTNet, and more • Supposed to finish its work by the end of March Y.Inoue, NTT

  4. Activities • T71 Ad hoc WG had two meetings • Jan. 23: The 1st meeting • Call for members of the drafting group. • Reviewed current ARIB STD-T71 to find the sections to be modified. • Feb. 25: The 2nd meeting • The initial version of the draft was presented to the WG members. • Discussions: • Clarification for some texts (e.g. spurious emissions) • Channel numbering scheme, etc • Mar. 19: The 3rd meeting • Activities in IEEE 802.11 TGj was reported. Y.Inoue, NTT

  5. Major Topics • Regulatory requirements include: • Frequency band and channelization: 4.9-5.0GHz, 5.030-5.091GHz • Transmit power: 250 [mW] or 10 [mW/MHz] • Spectrum mask • In-band and out-of-band spurious emission • Antenna gain • Carrier sense level • Additional specification • Channel numbering: the same expression as the IEEE 802.11j D1.0 Y.Inoue, NTT

  6. Channel Numbering Scheme • 4.9 – 5.0GHz: • MMAC T71 Ad hoc WG accepted the channel numbering scheme proposed in TGj 5000 4000 4900 MHz 0 436 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 New Definition Y.Inoue, NTT

  7. Schedule • T71 Ad hoc WG had some discussions by email after the final meeting. • All of the modifications are incorporated into the draft. May/9: The final version of the draft. June/5: ARIB Standards Assembly. • The draft will be approved as ARIB STD-T71 ver.2. Y.Inoue, NTT

  8. Summary • The MMAC T71 Ad hoc WG: • Final draft for the ARIB STD-T71 ver.2 is ready. • The WG will continue its activity for further revisions. • Issues to be addressed: • Harmonization with IEEE 802.11j Standard • 10MHz bandwidth system • ARIB: • June/5 Standard assembly will approve the draft as ARIB STD-T71 version 2 • STD-T71 ver.2 will be published soon. Y.Inoue, NTT

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