1. 2014. 09

2. Ⅰ Ⅰ Background Ⅱ Ⅱ Problems Ⅲ Ⅲ Need for a new protocol Protocol overview Ⅳ Ⅳ Conclusion Ⅴ Ⅴ

3. 3 Controlled devices in HES Controlled devices in HES Internet Light Wallpad Curtain Batch circuit breaker Thermostat Meter Boiler Door lock Gas valve Residential gateway Air conditioner Security Ventilation fan Standard Targets : Wireless: Wired

4. 4 Interoperability issues between variety device vendors Interoperability issues between variety device vendors  Devices must be developed whenever the counter devices are changed.  Development period would be longer.  After HES setting up with self made protocol, new vendor hardly can join the existing HES. Aftermarket and consumer market can not be formed. Aftermarket and consumer market can not be formed.  Replacements can not be found when the devices break down.  Also, the residents want to change the devices on their personal preferences.  Detached house owner want to set up DIY HES.

5. 5 Protocol requirement Protocol requirement  Be light for poor resources  Be simple and easy  Be inexpensive for implementation Light Door lock Gas valve Air conditioner Security Boiler Curtain Batch circuit breaker Thermostat Meter Ventilation fan Wallpad Simple devices with poor resources by small companies Complex devices with rich resources by large company

6. 6 Launching HES standard forum(since 2005) Launching HES standard forum(since 2005)  Goal : Development of communication protocols reflecting the real HES  Members : 30 device vendors  Achievements : 12 Voluntary standards  Standardization body : Telecommunications Technology Association(TTA)  Next stage : Korea Standards and International Standards  Current status  Implemented by 20 device vendors.  Development of conformance test tool and interoperability test specification is in Progress.  National testing and certification system will be set up based on ISO 17025/Guide 65. Light Door lock Gas valveAir conditioner Security Boiler Curtain Batch circuit breaker ThermostatMeterVentilation fan

7. 7 Protocol stack Protocol stack Message format Message format Serial Communications (RS-232, RS-485 etc.) Serial Communications (RS-232, RS-485 etc.) 802.15.4 Layer 1 ~ 2 Protocol for HES Layer 7 Header Device ID Device Sub-ID Command Type LengthDataXOR Add sum 1 Byte Variable1 Byte 11 DevicesSingle, Group Characteristic, Status, Control Data length Error, Control, Reserved 0xF7Message error check

8. 8 This voluntary standards includes : This voluntary standards includes :  Minimum configurations of communications  Message sequence and timing  Error handling  Cabling and terminal register  Examples Main DeviceControlled Devices 1. Characteristic request 2. Characteristic response 3. Status request 4. Status response 5. Control request 6. Controlled status response Request time : Min 10ms Response time : Min. 10ms, Max. 15ms

9. 9 Advantages of this standard Advantages of this standard  Light and suitable for poor resource(ex. Microcontroller based on Tiny OS)  Simple and easy  Low development cost This proposed standard is verified for 5 years by 20 vendors. This proposed standard is verified for 5 years by 20 vendors. Once conformance testing and certification system set up, it would be implemented widely. Once conformance testing and certification system set up, it would be implemented widely.