doc.: IEEE XXX g Submission May FX. Fu, J.ShenSlide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [PHY Layer Discussion for Chinese NB-Frequency Bands] Date Submitted: [30 June, 2009] Source: [Zhuang Zhao, Xiao Tao, Liang Li, Haitao Liu, Betty Zhao ] Company [Chinese Academy of Sciences, Vinno, Huawei, Wuxi Mirco-Nano Sensor Networks R&D Center] Address [Beijing] Voice:[ ], FAX:[ ], Re: [IEEE g group] Abstract: PHY Layer Discussion on NB Frequency Bands Purpose:Presented to the g SUN Task Group for consideration 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

doc.: IEEE XXX g Submission Several Authorized NB in China The possible frequency bands for wireless measurement instrument are: – 223 MHz, BW < 200KHz, Ptx (e.r.p)< 10mw. dfmax<100ppm MHz, BW < 200KHz, Ptx (e.r.p)< 50mw. dfmax<100ppm. TX transmission period is shorter than 5 sec MHz, BW < 200KHz, Ptx (e.r.p)< 50mw. dfmax<100ppm The possible frequency bands for wireless control instrument are: 314 – 316 MHz, MHz, mhz BW < 400KHz, Ptx (e.r.p)< 10mw. May FX. Fu, J.ShenSlide 2

doc.: IEEE XXX g Submission Suggestion for NB PHY Layer Data Rate is variable Variable transmit power Bandwidth <= 200kHz Multiple-Channel, Channel Hopping (Optional) FSK or GFSK –Adjacent concerns –Processing Gain –Better out of band emissions

doc.: IEEE XXX g Submission United Preamble pattern Payload size controlled by MAC up to 2047 octets per PSDU CRC Error Detection and practical security procedure Adopting most of IEEE E and compatible to IEEE CSMA or Listen Before Talk (LBT) Suggestion for NB PHY Layer