HANBACK ELECTRONICS CO LTD USN introduction Hanback Corp

HANBACK ELECTRONICS CO. , LTD. USN introduction Hanback Corp. 저자권 보호됨

HANBACK ELECTRONICS CO. , LTD. Ubiquitous Sensor Network 2020 -12 -04 저자권 보호됨 2

HANBACK ELECTRONICS CO. , LTD. Background • Ubiquitous Society – Provide information or service anytime, anywhere in a intangible manner • Base Technology for Ubiqitous Env. : USN – Tech. for Human’s behavior pattern or environment monitoring • More intelligent service is possible – Purpose of USN • Collecting, Processing & Transmitting Data by establishing network • One of the most highlighted Tech. [MIT’s Technology Review, Feb. 2003] 2020 -12 -04 저자권 보호됨 3

HANBACK ELECTRONICS CO. , LTD. Wireless Sensor Network • Characteristics – – – Accuracy of Sensor Devices Limited Power – battery system Limited size and price Limited bandwidth – 무선 채널의 한계 Limited RF output Trade-off among elements 2020 -12 -04 저자권 보호됨 4

HANBACK ELECTRONICS CO. , LTD. Hardware Platform of (Smart) Sensor • Devices – CPU: 8 bit/16 bit small/low power micro controller – Wireless modem: • Short distance/low power wireless communication device • RFM TR 1000, Chipcon CC 1000, Bluetooth, IEEE 802. 15. 4 – Battery System • Wireless Sensor Network Platform – Berkeley Motes/Mica 2 Dot, Intel Research i. Mote, Stargate, Hanback Zigbe. X 2020 -12 -04 저자권 보호됨 5

HANBACK ELECTRONICS CO. , LTD. Crossbow MICA-2 (Berkeley Mote) • Processor – Atmel 8 -bit 프로세서 (CPU 8 Mhz) – 128 KB Flash program memory – 4 KB SRAM • RF Interface – – Chipcon CC 1000 Radio range: 약 10 m Data rate: 40 Kbits/sec Frequency range: 300 ~ 1000 MHz <MICA 2> • OS: Tiny. OS • Multi-Sensor Board 2020 -12 -04 <Sensor Board> 저자권 보호됨 6

HANBACK ELECTRONICS CO. , LTD. Intel i. Mote • High performance and high throughput – Node for video and audio information • Computing – Strong ARM 32 -bit RISC processor – 512 KB Flash, 64 KB SRAM • Radio Transceiver – Bluetooth – Data rate: 500 Kbps~1 Mbps – Frequency : 2. 4 GHz (ISM) • OS: Tiny. OS 2020 -12 -04 저자권 보호됨 7

HANBACK ELECTRONICS CO. , LTD. Rockwell WINS • COU – Strong. ARM SA 1100, 32 -bit processor, 1 MB SRAM, 4 MB flash • RF Interface – 900 MHz spread spectrum radio, with dedicated microcontroller: 32 KB RAM, 1 MB bootable flash • Size – 3. 5”x 3” package size 2020 -12 -04 저자권 보호됨 8

HANBACK ELECTRONICS CO. , LTD. MIT µAMPS • • ‘highly integrated, yet flexible sensor node based on two dedicated chips’ (off-the-shelf -> systems on chip) Strong. ARM SA 1110 32 -bit, 206 MHz, RISC processor • 2020 -12 -04 3 acoustic sensors attached to each node, for estimation of direction of target (µAMPS I) 저자권 보호됨 9

HANBACK ELECTRONICS CO. , LTD. UCLA Medusa MK-2 • • radio-acoustical localization ATMega 128 L 8 -bit, 8 MHz, 4 KB flash, 4 KB SRAM ( interface w/ sensors & radio) • ARM Thumb 32 -bit, 40 MHz, 1 MB flash, 136 KB RAM (more demanding processing) TR 1000 radio Monolithics (OOK, ASK modulation) ultrasonic ranging system, light & temperature • • 2020 -12 -04 저자권 보호됨 10

HANBACK ELECTRONICS CO. , LTD. Hanback Zigbex • Computing – Atmel 8 -bit RISC microcontroller – 128 KB Flash program memory – 4 KB SRAM • Radio Transceiver – – Chipcon CC 2420 Radio range: (130 m) Data rate: 240 Kbits/sec Frequency range: 2. 4 GHz (ISM) • Tiny. OS, Nano-Qplus(ETRI Korea OS) • RFID reader + RFID tag • Base sensor + Multi-modal Sensor Board 2020 -12 -04 저자권 보호됨 11

HANBACK ELECTRONICS CO. , LTD. RFID • RFID (Radio Frequency Identification) : – Implemented in 1960 s. – Low price tag. • A RFID system : – RFID Tag (or Transponder): micro chip for identification using serial number(passive or active) • Passive(w/o battery) • Active (w/ battery ) – RFID Reader: reading device 2020 -12 -04 저자권 보호됨 12

HANBACK ELECTRONICS CO. , LTD. RFID System 2020 -12 -04 저자권 보호됨 13

HANBACK ELECTRONICS CO. , LTD. Convetional ID Systems • Bar Code 2020 -12 -04 저자권 보호됨 14

HANBACK ELECTRONICS CO. , LTD. Comparison with ID Systems 구분 RFID 1 D barcode 2 D barcode Unique ID each item Distance 1~x 0 M Few cm Multireading possible Imposs Re-writable possible Imposs mobility possible Imposs reuse possible Imposs dutability strong weak 2020 -12 -04 저자권 보호됨 15

HANBACK ELECTRONICS CO. , LTD. Ubiquitous Sensor Networks • Ubiquitous Sensor Networks – RFID & wireless sensor network: • RFID tagging and environment monitoring • Flexible networking • Event based collection – Network maintainability • From node to sink, communication must be survived – Easy network configuration – Improved Ad-Hoc network 2020 -12 -04 저자권 보호됨 16

HANBACK ELECTRONICS CO. , LTD. Ad Hoc Wireless Networks • Ad Hoc Networks – Enabling technology to establish network without BS or AP. • Characteristics – – – Easy installation Low management cost Limited transmission distance Dynamic topology establishment Security vulnerability 2020 -12 -04 저자권 보호됨 17

HANBACK ELECTRONICS CO. , LTD. USN vs. Ad Hoc Networks • Similarity: – – Dynamic topology Self-organization Energy limitation Routing by nodes • Difference (USN): – Much limited resource (power, size, memory, etc) – Many number of nodes – Working on more severe environment 2020 -12 -04 저자권 보호됨 18

HANBACK ELECTRONICS CO. , LTD. Research Topics 2020 -12 -04 저자권 보호됨 19

HANBACK ELECTRONICS CO. , LTD. USN Related Projects • Smart Dust and Pico. Radio (UC at Berkeley) • WINS (UC at Los Angeles) – Wireless Integrated Network Sensor • COUGAR (at Cornell Univ. ) – “The Network is the Database” • Iris. Net (at Carnegie Mellon Univ. ) – Internet-scale Resource-Intensive Sensor Network Service • RFID/USN ITRC (Korea) 2020 -12 -04 저자권 보호됨 20

HANBACK ELECTRONICS CO. , LTD. USN Protocol Stack • Sensor network architecture • Research subject in Protocol stack – – 2020 -12 -04 Energy efficient networking Localization Synchronization Efficient Data aggregation 저자권 보호됨 21

HANBACK ELECTRONICS CO. , LTD. MAC Layer • Assumption – Energy efficiency – Maximization of Bandwidth • MAC protocols for USN – Cellular system’s MAC: • high Qo. S – Mac in Bluetooth and ad-hoc : • TDMA by Master node 2020 -12 -04 저자권 보호됨 22

HANBACK ELECTRONICS CO. , LTD. Network Layer (Routing) • Requirements – energy-efficiency routing protocols – Scalability – Data aggregation 2020 -12 -04 저자권 보호됨 23

HANBACK ELECTRONICS CO. , LTD. Transport Layer – Resource Limitation Plug-in Transport Layer • TCP Ack mechanism is too costly. – Transport Protocol is needed only for USN 2020 -12 -04 저자권 보호됨 24

HANBACK ELECTRONICS CO. , LTD. Application Layer • Open research – Database – Middleware 2020 -12 -04 저자권 보호됨 25

HANBACK ELECTRONICS CO. , LTD. The End !!! 2020 -12 -04 저자권 보호됨 26