Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Slide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Data rate availability in 433MHz with in Japanese RR ] Date Submitted: [17 May, 2010] Source: [Masashi Shimizu] Company [NTT] Address [ Hikarinooka Yokosuka Japan] Voice:[ ], FAX: [ ], Re: [ Abstract: [ This document has been shown data rate availability by using market available typical UHF LSI to keep Japanese RR in 433MHz ] Purpose:[Understanding Japanese RR] Notice:. Release:..
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Data rate availability in 433MHz with in Japanese RR NTT Masashi Shimizu
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f mW 5.6mW 10mW 1MHz 200KHz 1.74MHz MHz DUTY 10% 433MHz Japan (ARIB STD-T92) ETSI (ECC DEC(04)02) USA (FCC15.240)
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Assumed 433MHz basic system Tags Interrogator Wakeup Ack Command Response
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f 433MHz in JAPAN
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f User requirements 433MHz can be use just international logistics. It means user or this products will be limit for international logistics companies. Low cost High reading rate Automatic Identifying the container number Seal monitor function
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Data rate limit by using market available LSI (SI4421) 38.4Kbps BFSK Deviation 30KHz makes 180.5KHz bandwidth
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f SIPG Container Yard A 300m radius cell is assumed. One island block is composed of 40X6X6 containers. One reader can cover 8 islands. This means there are containers in a cell maximum.
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Estimated Reading time of Tags in a Cell Beacon Interval PA Pure ALOHA CS -100 CSMA With -100dBm sensitivity CS -110 CSMA With -110dBm sensitivity TX time: 10mSec 38.4Kbps 384bit payload including Preamble and CRC
Submission May, 2010 Masashi Shimizu NTT doc.: IEEE f Results 38.4Kbps is the maximum data rate within market available UHF LSI to keep Japanese RR in 433MHz. To read tags (based on real container yard situation) it is need 5000 second with 200 second beacon interval. It can reduce to 800 second by using CSMA. It is need some real use dense models, power and duty limitation should be set for beacon only tags to achieve optimal reading time.