1. May. 2007
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Supplement of Commonality Enhancement for World Wide Sub-GHz PHY standardization]
Date Submitted: [14 May.,2007]
Source: [Shusaku Shimada] Company [Yokogawa Co.]
Address [ Nakacho-town Musashinoshi-city Tokyo, Japan]
Voice:[ ], FAX: [ ],
Re: [CALL for WNG presentations by ]
Abstract: [ This slides supplement the previous submission titled, “Commonality Enhancement for World Wide sub-GHz PHY standardization”, which summarized the status of world wide regulation and the co-existence possibility and foreseeable challenge concerning RFID system. In this submission, the benefits of sub-GHz PHY corresponding to each applications which are covered by the proprietary technologies so far, are re-confirmed. ]
Purpose: [ To promote the discussion in WNG at Montreal Interim Meeting. ]
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
Shusaku Shimada, Yokogawa Co.

2. May. 2007
Summary
In this submission, the benefits of sub-GHz PHY corresponding to each application which is covered by the proprietary technology so far, are re-confirmed.
Key features required in these applications are common, as following. (1) Stability of defined QoS level which is required in each application. In other word, RELIABILITY, based on better propagation characteristics of sub-GHz bands. (2) Limited traffic of each node, adequately covered by Low Rate WPAN concepts. These include the topological redundancy like Mesh, and the co-existence capability. (3) License exempt system, but appropriately separated from uncontrolled broadband jabber applications.
Shusaku Shimada, Yokogawa Co.

3. Typical Sub-GHz PHY Application Spaces
May. 2007
Typical Sub-GHz PHY Application Spaces
(1) Industrial systems. The propagation environment of outdoor plants and indoor factory is typically categorized as “harsh”. (2) Medical systems. The propagation environments of various medical device are diverse and include a limited link budget due to limited transmission e.i.r.p. level. (3) Social infrastructural systems. The propagation paths may sometimes include, a foliaged forest, an ajar opened cover of meter-panel and a crevice between buildings. Current proprietary solutions include Narrowband FSK system for application specific frequency band, US high power ISM-band system of FHSS and the licensed systems in each regulatory domains.
Shusaku Shimada, Yokogawa Co.

4. May. 2007
Sub-GHz PHY feature
Less propagation Loss be instrumental either wider coverage or less transmission power for buttery power conservation.
Penetration characteristics through materials and into artificial obstacles be utilized to eliminate blackout spots.
Beneficial to Industrial, Social Infrastructural and Medical applications as well as other WPAN markets.
Deserve well of each network user above if regional difference and coexistence are well managed.
Shusaku Shimada, Yokogawa Co.

5. Material Penetration Examples : Red Brick
May. 2007
Material Penetration Examples : Red Brick
Excerpt from University of Southern California, Robert Wilson, Robert Scholtz and UltraLab Member's work
Shusaku Shimada, Yokogawa Co.

6. Material Penetration Examples : Fir Lumber
May. 2007
Material Penetration Examples : Fir Lumber
Excerpt from University of Southern California, Robert Wilson, Robert Scholtz and UltraLab Member's work
Shusaku Shimada, Yokogawa Co.

7. Material Penetration Examples : Glass
May. 2007
Material Penetration Examples : Glass
Excerpt from University of Southern California, Robert Wilson, Robert Scholtz and UltraLab Member's work
Shusaku Shimada, Yokogawa Co.

8. Material Penetration Examples : Foliaged Forest
May. 2007
Material Penetration Examples : Foliaged Forest
Propagation over irregular terrain with vegetation
Excerpt from distributed data submitted for ITU-R 1145 (1990)
Shusaku Shimada, Yokogawa Co.

9. Summary of Common Benefits of Sub-GHz WPAN
May. 2007
Summary of Common Benefits of Sub-GHz WPAN
Only 16% Transmission Power is required, to cover identical area than 2.4GHz ISM band.
If free space propagation can be assumed.
At least 3dB to over 6dB less penetration loss of materials, to improve the reliability of usual application cases.
Even if temporal shadowing may be alleviated by the path diversity of Mesh.
Shusaku Shimada, Yokogawa Co.

10. May. 2007
Common Requirements on Sub-GHz WPAN ( Reiteration of wng0 )
Frequency Portability over Different Regulatory Domains
Identical channelization over different frequency bands of different regulatory domains.
Avoid multiple regional technologies interfering each other in less regulated regions, by provisioned standardizations with commonality enhancement.
Possible Coexistence Mechanism
Appropriate CCA granularity ( e.g. 200KHz ) of sub-channel and their bundled treatment.
Swift CCA and transmit quick, then release channel immediately
Interference Avoidance
Transmission spectrum shaping function to eliminate a few Spectral area to avoid interference.
Interference avoidance should be effective when other systems are detected by CCA functionality.
Eventually Robust, Reliable and Effective usage of Sub-GHz.
Shusaku Shimada, Yokogawa Co.

11. May. 2007
Discussion?
Shusaku Shimada, Yokogawa Co.

12. May. 2007
References
IEEE Doc b Frequency Band Overview for MHz in Korea
IEEE Doc wng0 Detail Introduction of Chinese LR-PAN Standard (Draft)
IEEE Doc b Chinese New Frequency Band Proposal fro Short-Distance Wireless
IEEE Doc r0-wng0 Regulatory issues for SRDs in MHz
IEEE Doc wng0-Commonality-Enhancement-for-Sub-GHz-WPAN
Excerpt from data for University of Southern California Ph. D Dissertation by Robert Wilson, et al.
IEEE Standard IEEE
Shusaku Shimada, Yokogawa Co.