1. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
May 2007
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [PHY/MAC proposal for TG3c]
Date Submitted: [ 7 May, 2007]
Source: [Hiroyuki Nakase, Yukimasa Nagai, Akinori Fujimura]
Company [Tohoku University, Mitsubishi Electric Corp.]
Address [Katahira, Sendai , Japan / Ohuna, Kamakura , Japan ]
Voice:[ ], FAX: [ ], ]
Re: []
Abstract: [PHY/MAC proposal document.]
Purpose: [To be considered in IEEE c standard.]
Notice: This document has been prepared to assist the IEEE P 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
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>

2. PHY/MAC proposal for TG3c
<month year>
doc.: IEEE <doc#>
May 2007
PHY/MAC proposal for TG3c
H. Nakase, Y. Nagai and A. Fujimura
Tohoku University
Mitsubishi Electric Corp.
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>

3. Next Step Towards Down Selection
May 2007
Next Step Towards Down Selection
Tohoku University and Mitsubishi Electric have agreed to create a joint submission with COMPA and a Formal Joint Submission would be made in July Meeting in San Francisco
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric

4. Features of the proposal
<month year>
doc.: IEEE <doc#>
May 2007
Features of the proposal
PHY
Single carrier transmission based on 250Msymbol/sec
Binding carriers for throughput of more than 2Gbit/sec
Employment of both omni and directional antenna for PNC
Dedicated low rate control channel
MAC
Simple device discovery using the control channel
Frame aggregation or frame extension for higher throughput
Interference avoidance for protection from jamming due to new DEVs
Definition of extended MAC header before MAC payload
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>

5. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
May 2007
Example : Block diagram of transmitter
2Gbit/sec for DEV f1 f2 f3 f4
Directional
antenna
Mod
Mod
S/P
Convert
Data
Mod
Mod
Channel binding based on 250Msymbol/sec single carrier modulation
Reduction of symbol rate for commercially available ADC/DAC
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>

6. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
May 2007
Example : Block diagram of transmitter
2Gbit/sec for PNC f1 f2 f3 f4
Directional
antenna
Mod
Mod
S/P
Convert
Data
Mod
Mod f0
Control
Data
Mod
Transmitter for Control channel using Omni antenna
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
Omni
antenna
<author>, <company>

7. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
May 2007
PHY : Example of Channel assignment
59.0
60.0
61.0
62.0
63.0
64.0
Dedicated Control channel
Traffic channel
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>

8. MAC Protocol Supplements for 802.15.3c
May 2007
MAC Protocol Supplements for c
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric

9. Automatic Device Discovery (ADD)
May 2007
Automatic Device Discovery (ADD)
To achieve higher data transmission, supporting directional communication needed in TG3c alternate PHY on 60GHz.
To reduce overhead of automatic device discovery (ADD), supporting omini antenna also needed for MAC design in PNC.
Proposed ADD has following features
Omni antenna for control CH (Low Rate PHY)
Device Discovery, Beaconing, etc
Directional antenna for transmission CH (High Rate PHY)
Data transmission
omni
Low Rate Com.
PNC RF
DEV
sector
sector RF SW SW RF
High Rate Com.
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric

10. Throughput improvement
May 2007
Throughput improvement
To achieve higher throughput and improve MAC efficiency, frame aggregation and frame extension are necessary in mmW (60GHz) alternate PHY.
Reason
The conventional MAC protocols were not enough to achieve high throughput due to limited frame size (defined by up to 12 bit, 2048 byte)
The extension of the length of 12 bit to 16 bit is proposed to realize frame aggregation or frame size extension for higher throughput efficiency
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric

11. Interference Avoidance
May 2007
Interference Avoidance
New DEV or PNC could become the interfering Transmitter in directional communication, Contention Admission Control (CAC) is necessary to avoid interference
Directional Communication
Directional Antenna PNC
Directional Antenna DEV
Interfering
Transmitter
(PNC/DEV)
Interfering
Transmitter
(PNC/DEV)
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric

12. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
May 2007
Summary
PHY
Single carrier based channel configuration
Channel binding for higher data rate
Omni and Directional antenna for PNC, Directional antenna for DEV
Dedicated low rate control channel
MAC
Simple definition of Automatic Device Discovery using omni antenna control channel
Frame aggregation or extension
Interference avoidance
Extended MAC header
H. Nakase, Tohoku Univ./ Y. Nagai, Mitsubishi Electric
<author>, <company>