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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: [ 860~960MHz Band Analysis for IEEE 802.15.4 in Korea ] Date Submitted: [ 07 Sept., 2004 ] Source: [ Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim ] Company [ ETRI ]

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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: [860~960MHz 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] Voice:[+82 42 860-5620], FAX: [+82 42 860-5218] E-Mail:[hsulee@etri.re.kr, clee7@ etri.re.kr, jyk@etri.re.kr] Re: [ ] Abstract: [This document presents frequency band overview for 860~960 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. Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  2. 860~960MHz Band Analysis for IEEE 802.15.4 in Korea Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  3. Safety Comm. CT-2 Wireless Data Comm. 869 898 902 910 915 924.45 930 940 942 960 TRS Mobile Phone P A G E R Broadcasting Relay 900 894 908.5 914 851 866 923.55 928 938 950 952 959 Wireless Data Comm. Airport Comm. Cordless Phone (CT-1) Cordless Phone Wireless Microphone Utilization of 860~960 MHz Band in Korea • No ISM band between 860~960 MHz in Korea • 868~868.6MHz : Airport Communication Service • 902~928MHz : 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 Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  4. Analysis of Available Frequency Band • Possible analysis scenarios • Scenario 1 : Reallocation of unused CT-2 frequency band • Total band : 908.5~914MHz • CT-21) band : 910~914MHz • Use adjacent guard band : 908.5~910MHz • Scenario 2 : Frequency sharing of Low Power Device • Sharing with Wireless Microphone band : • 928~930MHz and 950~952MHz • 908.5~914MHz band assignment of Korea • Plan to assign 908.5~914MHz 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. Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  5. RFID System RFID Frequency Band 908.7MHz 913.9MHz Tag P=1W 1 2 3 4 26 27 …… Gr=6dBi F Reader 914MHz 908.5 200KHz 5.4MHz Review of RFID System Considering in Korea • Frequency band : 908.5~914 MHz • Power of Reader : Below 1W • Frequency band : 27 channels (200KHz bandwidth/channel) Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  6. Korea 2MHz 1.2MHz 908.5~914MHz 906 908 910 912 914 916 918 920 922 924 902MHz CH1 CH10 928MHz CH1 CH8 1MHz CH1 CH5 908.5MHz 914MHz Utilization Methods of 908.5~914MHz • 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 Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

  7. 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 Hyungsoo Lee, Cheolhyo Lee, Jaeyoung Kim, ETRI

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