Abstract: [Response to Call for Preliminary proposal in IEEE d Task Group. Our proposal focuses on low cost and low power consumption.

Transcription

1 Project: IEEE P Working Group for Wireless Personal Area Networks N (WPANs( WPANs) Title: [Response to Call for Preliminary Proposal in IEEE d Task Group] Date Submitted: [14-Jan-2008] Source: [Kiyoshi Fukui, Yasutaka Kawamoto] Company [Oki Electric Industry Co., Ltd.] Address [2-5-7 Hommachi, Chuo-ku, Osaka , Japan] Voice:[ ], FAX: [ ], [fukui535@oki.com, kawamoto728@oki.com] Re: [ d-call-proposals.doc] Abstract: [Response to Call for Preliminary proposal in IEEE d Task Group. Our proposal focuses on low cost and low power consumption.] Purpose: [To show our preliminary proposal and discuss in IEEE d Task Group.] 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 Slide 1

2 Agenda Japanese Consultation of 950MHz Our approach to IEEE d Task Group Preliminary proposal for IEEE d Task Group Slide 2

3 Japanese consultation overview (1/3) Frequency band 950.8MHz-955.8MHz (5.0MHz) Channel bandwidth (200 x n) khz (n is integer from 1 to 3) Antenna power 1mW or less for all of unit radio channel 10mW or less for unit radio channels from 954MHz to 955MHz Slide 3

4 Japanese consultation overview (2/3) PSD mask Level of channel edge: 20dBc Power of adjacent channel: less than -18dBm (10mW) less than -26dBm (1mW) 1mW 10mW 10dBm 0dBm -20dBm -20dBc -10dBm -20dBc -39dBm/100kHz -39dBm/100kHz -26dBm/ fc- fc fc+ -18dBm/ fc- fc fc+ Slide 4

5 Japanese consultation overview (3/3) Channel allocation Antenna power = 1mW ( channel allocation) 0dBm -20dBm -39dBm/100kHz -5dBm/100kHz 950MHz (ch1)(ch2)(ch3)(ch4)(ch5)(ch6)(ch7)(ch8)(ch9) (ch10)(ch11)(ch12)(ch13)(ch14)(ch15) (ch16) (ch17)(ch18) (ch19) (ch20) (ch21)(ch22)(ch23)(ch24) 956MHz 950.8MHz 952MHz 954MHz 955MHz 955.8MHz Antenna power = 10mW 10dBm -10dBm -39dBm/1 00kHz 給電点 送信電力 950MH z (ch17 )(ch18 )(ch19 )(ch20) 956MHz 950.8MH z 952MH z 954MH z 955MH z MHz Slide 5

6 Our approach to d d is a new PHY for Japanese WPAN that is used by low cost and low power sensor network. Low cost and low power consumption have the highest priority. Requirement Low cost & Low power consumption Low cost and low power consumption are more important than high data rate Appropriate number of available channels For sensor network applications. Not only 1mW channels but also 10mW channels Requirement of some applications Slide 6

7 Preliminary Proposal for TG4d (1/2) PHY Modulation parameters Channel Bandwidth Bit Rate (kbit/s) Symbol Rate (k sym/s) Modulation type* BT Modulation Index (h) 400kHz GFSK (*Our proposal does not use spread spectrum technology) Transmitter functions Bit in PPDU Bit Symbol data whitening (PN9) Gaussi an Fil tering FSK modulation Modulated signal 1bit=1symbol x 9 + x BT=0.5 h = 1 Slide 7

8 Preliminary Proposal for TG4d (2/2) Channel plan Antenna power = 1mW 0dBm -20dBm -39dBm/100kHz -55dBm/100kHz 950MHz (ch1) (ch2) (ch3) (ch4) (ch5) (ch6) (ch7) (ch8) (ch9) (ch10) (ch11) (ch12) (ch13) (ch14) (ch15) (ch16) (ch17) (ch18) (ch19) (ch20) (ch21) (ch22) (ch23) (ch24) 956MHz 950.8MHz 952MHz 954MHz 955MHz 955.8MHz Antenna power = 10mW 10dB m -10dB m -39dBm/1 00kHz 給電点 送信電力 950MH z 950.8MH z Ch.1 Ch.2 Ch.3 Ch.4 Ch.5 Ch.6 Ch.7 Ch.8 Ch.9 Ch.10 Ch.11Ch.12 Same channel allocation can be used in both 1mW and 10mW. 952MH z (ch17 )(ch18 )(ch19 )(ch20 ) 954MH z 955MH z 956MH z 955.8MH z Slide 8 Ch.9 Ch.10

9 Advantages of proposed GFSK PHY? Low power consumption A high efficiency non-linear amplifier can be used Low complexity modem Low cost LSI Low complexity modem Small area of LSI High receiver sensitivity Achievable at low cost and low power consumption Low emission outside the 400kHz channel Meets Japanese Regulations at both 10 and 0dBm output power Slide 9

10 Why 400kHz bandwidth? Single bandwidth solves compatibility issues Max data rate in is too low Two 10mW channels available Only one single channel available when 600kHz bandwidth is used Slide 10

11 Summary Our proposal is a new PHY for the Japanese WPAN that is suitable for low cost and low power consumption sensor networks. Low cost and low power consumption have the highest priority. Our proposal to the d Modulation = GFSK (BT=0.5), modulation index = 1 Low cost and low power consumption can be achieved. Bandwidth = 400kHz Data rate = 100Kbps Appropriate number of channels are available. Not only 1mW channels but also 10mW channels can be used. 10mW node and 1mW node can be communicate directly. Slide 11