초록 ▼

∎ 고신뢰/저지연 IEEE802.15.4e DSME 호환 Network S/W 설계 및 개발
- 초절전/저지연 IEEE802.15.4e DSME 호환 Network 설계
- 신뢰성 기반 멀티홉 망 구성 및 라우팅 S/W 구현
- 종단 노드간 전송 지연 시간 최소화 기술 구현
- 계층적 어드레스 할당 및 매칭기술 구현
∎ 상용칩기반 초절전 시의성 지원 MAC S/W 구현
- IEEE802.15.4e-2012 DSME MAC 프로토콜 구현
- 기존 IEEE802.15.4-2006 PHY를 구현한

∎ 고신뢰/저지연 IEEE802.15.4e DSME 호환 Network S/W 설계 및 개발
- 초절전/저지연 IEEE802.15.4e DSME 호환 Network 설계
- 신뢰성 기반 멀티홉 망 구성 및 라우팅 S/W 구현
- 종단 노드간 전송 지연 시간 최소화 기술 구현
- 계층적 어드레스 할당 및 매칭기술 구현
∎ 상용칩기반 초절전 시의성 지원 MAC S/W 구현
- IEEE802.15.4e-2012 DSME MAC 프로토콜 구현
- 기존 IEEE802.15.4-2006 PHY를 구현한 상용 RF 칩을 사용하여 빠른 프로토타입 구현 가능
- MCU 및 RF 칩의 저전력 기능 최적화 제공
- 5홉 기준 멀티홉 시각 동기 오차 < 1ms
∎ 고신뢰 센서노드 플랫폼 제작
- 센서노드 제어 모듈(센서노드/중계노드/싱크노드)
ㅁ 700/800/900MHz 대역 기반 센싱 데이터 처리 및 광역 무선전송 기능 수행
ㅁ 16bit 저전력 MCU 적용 데이터 처리
ㅁ 저전력 900MHz IEEE802.15.4g-2012 기반 무선 송수신
ㅁ 2-GFSK:50/100Kbps data rate
ㅁ 광대역 주파수 지원
- 센서노드 인터페이스 모듈
ㅁ 전원 제공 및 다양한 센서 인터페이스 제공
ㅁ 태양광 기반 2차전지 충전 및 1차전지 혼용 가능한 전원 제공 기능
ㅁ 센서(온도/습도) 내장
ㅁ 다양한 센서 정합을 위한 인터페이스 제공(I2C/UART/ADC 등)
∎ 고신회 센서네트워크 게이트웨이 제작
- 게이트웨이 제어 모듈 설계
ㅁ 센서네트워크 프레임 분석 및 프로토콜 변환
ㅁ 게이트웨이 송수신 데이터 처리
ㅁ 저가, 고성능, 저전력 특징을 가진 ARM-11 코어를 적용
ㅁ Memory:NAND Flash 2Gb, NOR flash 32Mb, m-DDR SDRAM 1Gb
ㅁ Ethernet, UART, USB
- 싱크노드 통신모듈
ㅁ CC1200 900MHz 대역 RF 소자
ㅁ CC2450 2.4GHz대역 RF 소자
∎ 소규모 상수시설 수질관리 광역 센서망 테스트베드 구축 및 운용
- 시스템 연동 시험을 위한 실내 테스트베드 구축 및 시험
- 응용 서비스를 위한 인터페이스 프로토콜 설계 및 구현
- 시스템 운용을 위한 실오 테스트베드 구축 및 시험
ㅁ 논산시 노성명 효죽리 286-1
ㅁ 논산시 벌곡면 양산리 187

Abstract ▼

Ⅳ. Results
A. Annual research and development goals
<1st yr>
Highly-reliable mid-range transmission support PHY/RF design:
- Highly-reliable mid-range transmission support PHY structural design
- Sub-GHz RFIC module design
- outdoor/mid-range variable-rate modem module design
Hi

Ⅳ. Results
A. Annual research and development goals
<1st yr>
Highly-reliable mid-range transmission support PHY/RF design:
- Highly-reliable mid-range transmission support PHY structural design
- Sub-GHz RFIC module design
- outdoor/mid-range variable-rate modem module design
Highly-reliable mid-range transmission support sensor node platform design:
- Sensor node platform prototyping and test
Highly-reliable low-latency MAC/Network protocol design:
- Highly-reliable low-latency MAC/Network function design
- Highly-reliable low-latency MAC/Network specification documentation
<2nd yr>
Highly-reliable mid-range transmission support PHY/RF implementation:
- Mid-range comm. modem function implementation
Highly-reliable mid-range transmission support sensor node platform implementation:
-Sensor node device platform prototyping
-Sensor node device software implementation and test
Highly-reliable low-latency MAC/Network protocol implementation:
- Highly-reliable low-latency IoT Network implementation and test
- Highly-reliable low-latency MAC implementation and test
On-site field test : 1st Test-bed:
- On-site Test-bed build
-Sensor node on-site deployment and test
<3rd yr>
Highly-reliable transmission support small sized sensor node platform implementation:
-Small sized sensor node device prototyping
-Gateway prototyping for water quality sensor data gathering
-Highly-reliable sensor network monitoring integrated management system test
Small-scale water-supply facility monitoring wide-area sensor network Test-bed:
-Wide-area sensor network TEST-BED build
-Wide-area sensor network TEST-BED test
B. Highly-reliable wide-are sensor network key technologies for water-quality monitoring
Highly-reliable low-power DSME MAC S/W tech.:
○ Low-power multi-hop comm. tech.
• TDMA based channel access tech. for maximizing sensor node device’s life span
• Low-power performance improvement via communication resource negotiation among neighboring devices which are not working properly in the legacy WPAN MAC protocol
○ On-time sensor information delivery
• As an IEEE802.15.4e-2012 MAC protocol, the implemented MAC S/W is able to minimize end-to-end delay when combined with end-to-end resource scheduling mechanism.
• The MAC S/W minimizes the malicious impact from RF interferers by utilizing channel diversity mechanisms.
○ Multi-hop time synchronization tech.
• The MAC S/W provides multi-hop time synchronization mechanism essential to the multi-hop communication to extend service coverage.
Highly-reliable low-power Newtork S/W tech.:
○ Highly-reliable multi-hop routing and networking tech.
○ End-to-end sensor information delivery latency minimization tech.
• The implemented network software provides an algorithm to minimize the end-to-end sensor information delivery latency
○ Hierarchical address assignment and matching tech.
Highly-reliable wireless node platform tech.:
○ Wide-area wireless node platform for water quality sensing data transmission using 700/800/900MHz frequency band.
○ Sensor Node control module design tech.
• Sensor node
• Rrelay node
• Sink node
○ Sensor Node Interface module design tech.
○ High-reliable gateway HW/SW design tech. for Internet of Things.
Small-scale water-supply facility monitoring wide-area sensor network Test-bed Deployment tech.:
○ Integrated water quality monitoring environment build and test tech.
○ Sensing Packet Interface protocol design tech for application services.
○ Wide-area sensor network TEST-BED build tech.
C. Highly-reliable wide-area sensor network tech. development for water qaulity management
Highly-reliabl e low-latency Network tech.:
∎ Low-power low-latency IEEE802.15.4e DSME-enabled Network S/W design and development
- Low-power low-latency IEEE802.15.4e DSME-enabled Network structure design
- Reliable multi-hop network configuration and routing software implementation
- End-to-end sensor data delivery latency minimization algorithm implementation
– Hierarchical address assignment and matching algorithm implementation
Highly-reliable On-time delivery MAC S/W:
Highly-reliable On-time delivery MAC S/W poritng on the commercial chip embedded node platform
- IEEE802.15.4e-2012 DSME MAC specification implementation
- DSME MAC software implementation on the legacy IEEE802.15.4-2006 PHY chip. Thus, fast prototyping is available.
- Optimized low-power performance for the selected commercial MCU and RF chip set
- Low multihop time sync. error: < 1ms (for 5hops)
Highly-reliable On-time delivery sensor node device platform:
∎ Configuration
- MCU module : Low-power 32bit MCU Cortex-M3
- RF communication module
ㅁ CC1200/AT86RF212 900MHz RF-band
ㅁ CC2450 2.4GHz RF band
- Sensor Interface module
ㅁ Versitile internal communication interfaces: I2C,SPI, UART, ADC
Low-power Sensor network Gateway:
∎ Configuration
- Gateway control module
ㅁARM-11
ㅁEthernet, UART, USB, Flash memory
- Wireless communication module
ㅁCC1200, AT86RF212 900MHz RF
ㅁCC2520 2.4GHz
TestBed:
∎ Wide-area sensor network testbed for small-scale water-supply facilities and water quality management
- Indoor testBed for system interworking
- Outdoor testBedf for system interworking
ㅁHyojuk-ri 286-1, Noseong-myeon, Nonsan-si
ㅁYangsan-ri 187, Beolgok-myeon, Nonsan-si