IEEE 802.15 <subject>

1
Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANs) Submission Title
860960MHz Band Analysis for IEEE 802.15.4 in
Korea Date Submitted 07 Sept., 2004 Source
Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim
Company ETRI Address 161 Gajeong-dong,
Yuseong-gu, Daejeon, 305-350, KOREA Voice82
42 860-5620, FAX [phone]
E-Mailhsulee_at_etri.re.kr, clee7_at_ etri.re.kr,
jyk_at_etri.re.kr Re Abstract This
document presents frequency band overview for
860960 MHz frequency band and suggests a
proposal of frequency utilization for the IEEE
802.15.4 Purpose Contribution to IEEE
802.15.4b Task Group 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.
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860960MHz Band Analysis for IEEE 802.15.4 in
Korea
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Utilization of 860960 MHz Band in Korea

• No ISM band between 860960 MHz in Korea
• 868868.6MHz Airport Communication Service
• 902928MHz CT-1, CT-2, Safety Service, Pager
• CT-2 service returned frequency license
• No problem using 2.4 GHz for IEEE 802.15.4
  because it is ISM band

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Analysis of Available Frequency Band

• Possible analysis scenarios
• Scenario 1 Reallocation of unused CT-2
  frequency band
• Total band 908.5914MHz
• CT-21) band 910914MHz
• Use adjacent guard band 908.5910MHz
• Scenario 2 Frequency sharing of Low Power
  Device
• Sharing with Wireless Microphone band
• 928930MHz and 950952MHz
• 908.5914MHz band assignment of Korea
• Plan to assign 908.5914MHz to RFID in order to
  motivate RFID industries at the end of 2004
• 1) CT-2 Cordless Telephone (second
  generation). A type of "public" cordless
  telephone that is connected by TDMA radio links
  to nearby, microcell base stations. CT-2 is most
  often used as a wireless payphone. Receiving
  calls is not possible.

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Review of RFID System Considering in Korea

• Frequency band 908.5914 MHz
• Power of Reader Below 1W
• Frequency band 27 channels (200KHz
  bandwidth/channel)

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Utilization Methods of 908.5914MHz

• Proposal of adapting North America specifications
  to IEEE 802.15.4 in Korea
• Assignment of two channels
• Another solution
• Proposal of Europe specifications
• which enable to increase channels
• Case 1 0.6MHz band/channel
• Case 2 1MHz band/channel
• Assignment of Maximum 8 channels

600KHz
Case1
Case2
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Summary

• Possibility to share frequency Two scenarios
• Sharing with RFID band
• Sharing with Wireless Microphone band
• Review of applying appropriate specifications to
  IEEE 802.15.4
• With North America specifications
• With Europe specifications
• Research for interference analysis of sharing
  frequency band by Korean Home Network Study Group
  started from May 2004
• Note ETRI would like to acquire the document
  related with reviewing interference and sharing
  frequency in other countries