May. 2007 Project: IEEE P802.15 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 [2-9-32 Nakacho-town Musashinoshi-city Tokyo, 180-8750 Japan] Voice:[+81-422-52-5543], FAX: [+81-55-7311], E-Mail:[shusaku@ieee.org] Re: [CALL for 802.15 WNG presentations by erik.schylander@PHILIPS.COM ] 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 P802.15. 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 P802.15. Shusaku Shimada, Yokogawa Co.

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.

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.

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.

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.

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.

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.

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.

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.

May. 2007 Common Requirements on Sub-GHz WPAN ( Reiteration of 15-07-0621-03-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.

May. 2007 Discussion? Shusaku Shimada, Yokogawa Co.

May. 2007 References IEEE Doc 15-04-0482-02-004b Frequency Band Overview for 860-960MHz in Korea IEEE Doc 15-06-0310-01-wng0 Detail Introduction of Chinese LR-PAN Standard (Draft) IEEE Doc 15-04-0370-00-004b Chinese New Frequency Band Proposal fro Short-Distance Wireless IEEE Doc 15-07-0541-r0-wng0 Regulatory issues for SRDs in 863-870MHz IEEE Doc 15-07-0621-03-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 IEEE802.15.4-2004 Shusaku Shimada, Yokogawa Co.