1. Operating System for Sensor Network
Jinho Son
Real-Time System Lab

2. Wireless Sensor Networks

3. Applicable Field for Wireless Sensor Networks
A Vision for Wireless Sensor Networks
The convergence of Smart Sensors, Internet Computing, and Wireless Communication enables us to have a deeper and broader visibility into our resource, process, and environment so that we can be faster and more effective in getting results.

4. Feature of Sensor Nodes
Characteristics of both embedded systems and general-purpose systems.
OS is necessary for sensing-process and communication between nodes.
use little energy and be robust to environmental conditions.
provide common services that make it easy to write applications.

5. A Operating System for Sensor Nodes
TinyOS
SOS
ANTS
T-engine
Nano-Qplus

6. Feature of TinyOS
an open-source operating system designed for wireless sensor networks
a component-based architecture
event-driven execution model
implemented by nesC language
development in U.C. Berkeley

7. Feature of SOS
able to upgrade kernel-module as well as application while run-time
system kernel classify into Static Kernel Image and Dynamically Loaded Module.
development in UCLA

8. Feature of ANTS (An evolvable Network of Tiny Sensors)
design to re-composition and evolution while run-time
EOS is the core of ANTS platform
support to dual-thread.
development in ICU

9. Other Operating System
development in TRON project
An open, standardized real-time operating system (RTOS) development platform for embedded system
composed of standardized hardware (T-Engine platform) and real-time kernel (T-Kernel)
Nano-Qplus
development in ETRI
suitable for sensor network

10. TinyOS

11. TinyOS Structures

12. TinyOS Layers

13. TinyOS Component Hierarchy (HW/SW)

14. TinyOS Radio Stack structure

15. IEEE 802.15.4 MAC/PHY Message Packet
Message Frame Types
Data, Acknowledge, Beacon, MAC Command

16. MICAz TinyOS Message Packet Structure
Header (10)
Payload (29)
CRC (2)
MAC/TinyOS Header
Payload Length 1 byte
Frame Control 2 bytes
Sequence Number 1 byte
Destination PAN ID 2 bytes
TOS Address 2 bytes
TOS AM Type 1 byte
TOS Group ID 1 byte
MAC Service Data Unit
Data Payload 29 bytes
MAC Frame Check Sum
CRC 2 bytes

17. MICAz Radio Stack on TinyOS

18. Wireless Communication on TinyOS

19. Q & A