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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 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 [239-0847 1-1 Hikarinooka Yokosuka Japan]

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 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 [239-0847 1-1 Hikarinooka Yokosuka Japan] Voice:[+81 468 59 8695], FAX: [+81 468 59 3351], E-Mail:[shimizu.masashi@lab.ntt.co.jp] 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: ..

  2. Data rate availability in 433MHz with in Japanese RR NTT Masashi Shimizu

  3. 1.74MHz 10mW ETSI (ECC DEC(04)02) 1MHz 5.6mW USA (FCC15.240) 200KHz 1mW DUTY 10% Japan (ARIB STD-T92) 433.05 433.5 433.82 434.02 434.5 434.79 433.92MHz 433MHz

  4. Assumed 433MHz basic system Wakeup Tags Ack Command Interrogator Response

  5. 433MHz in JAPAN

  6. 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

  7. Data rate limit by using market available LSI(SI4421) 38.4Kbps BFSK Deviation 30KHz makes 180.5KHz bandwidth

  8. 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 11520 containers in a cell maximum.

  9. Estimated Reading time of 10000 Tags in a Cell Beacon Interval TX time: 10mSec 38.4Kbps 384bit payload including Preamble and CRC PA Pure ALOHA CS -100 CSMA With -100dBm sensitivity CS -110 CSMA With -110dBm sensitivity

  10. Results • 38.4Kbps is the maximum data rate within market available UHF LSI to keep Japanese RR in 433MHz. • To read 10000 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.

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