1. MMAC Liaison Report July 2004
Yasuhiko Inoue
NTT Access Network Service Systems Laboratories
Yasuhiko Inoue, NTT

2. MMAC Overview MMAC (Multimedia Mobile Access Communication Systems)
Month 2000
doc.: IEEE /xxx
July 2004
MMAC Overview
MMAC (Multimedia Mobile Access Communication Systems)
Activities:
Investigation and study on system specifications, Standardization
MMAC makes some of the Japanese standard for radio communication systems including ARIB STD T-71
Demonstrative experiment
Information exchange and popularization activities, etc
Committees (until March 2004)
High Speed Wireless Access Committee (HiSWAN WG, CSMA WG)
Wireless Home-Link Committee (Wireless 1394 WG, UWB WG)
Yasuhiko Inoue, NTT
John Doe, His Company

3. Radio Communication Systems
July 2004
Japanese Frequency Regulations
Ministry of
Public Management
Home Affairs, Post and
Telecommunications
Association of
Radio Industries
And Businesses
Multimedia
Mobile Communication
Systems Forum
Japanese Standards of
Radio Communication Systems
Yasuhiko Inoue, NTT

4. Organization Changes Steering Committee Working Groups
July 2004
Organization Changes
Steering Committee
Control the activities of working groups
Working Groups
HiSWAN WG, MMAC WG, UWB WG, etc
Special Interest Group
Next Generation Wireless LANs SIG
IEEE 1394 over UWB SIG
Yasuhiko Inoue, NTT

5. MMAC-802.11 WG (ex-T71 Ad hoc WG)
Month 2000
doc.: IEEE /xxx
July 2004
MMAC WG (ex-T71 Ad hoc WG)
Mission:
Maintenance of ARIB STD-T71
ARIB STD-T71: IEEE a compatible WLAN system
Standardization of 5GHz band wireless access system
Operations in the 4.9 – 5.0 and – GHz bands
The same scope with TGj
Creation: June 2004
Chair: Satoru Aikawa (NTT)
Member companies:
Atheros, Canon, Denso, Fujitsu, Hitach Cable, Intel, Japan Telecom, JRC, Mitsubishi, Murata, NEC, NTT, TOYOCOM, Panasonic, QUALCOM, Samsung, TEPCO Optical Network, TDK, Toshiba, and more
Yasuhiko Inoue, NTT
John Doe, His Company

6. Discussions on Future Plans of MMAC-802.11 WG
July 2004
Discussions on Future Plans of MMAC WG
Support of new frequency bands and new rules for the existing wireless LAN systems
5.470 – GHz band
Information Council of MPHPT recently recommended to allocate this band for wireless LAN/wireless access systems.
5.250 – GHz band
Center frequency shift for – GHz band
Standardization of high throughput wireless LAN systems
Yasuhiko Inoue, NTT

7. July 2004
Schedules
July, 2004: Scope of the WGs will be approved by Steering Committee
September, 2004:
Revision of ARIB STD-T71 to incorporate the IEEE j standard.
October, 2004:
Start discussions on:
Use of – GHz band
Center frequency shift for – GHz band
Yasuhiko Inoue, NTT