Proposal.: Communication protocol and Device description for Home Automation Control Submitted By:...

March 2006

Proposal.: Communication protocol and Device description for Home Automation ControlSubmitted By: China

Proposal: JTC1 SC25 WG1 HES communication protocol and Universal Device Description Proposal: JTC1 SC25 WG1 HES communication protocol and Universal Device Description

Submission Title: Home automation control communication protocol and device descriptionDate Submitted: [March 2006]Source: China Home network standard committeeWeb: http://www.chinahomenetwork.orgVoice:[(86) 10-62571968], FAX: [(86) 10-62571968], E-Mail:[[email protected]]

Abstract: This contribution is a complete protocol stack for home automation control. It is intended to provide a physical layer 、 Network Layer 、 Application layer protocol between different home appliances for sharing the status 、 controlling the operation. It is based on proven technology, which can be implemented at low cost and can provide scaleable home network with robust performance and low power consumption for low data rate devices intended to communicate within the home. This contribution also provides a complete home device description file format to support universal description for the controlling language between NAU and Home appliances and user interface for controlling the Home appliances.

Purpose: Support Plug and Play for home appliances management

Notice: This document has been approved by MII of China as the China home network industry standard and published on June,2005.

SC25/WG1 N1207

March 2006


Home automation control protocol and device description proposal for SC25 WG1

March 2006


Home automation control communication Protocol

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Protocol Stack

UDCP ： Universal Device Control Protocol

others

NETL ： Network Layer

MACwireless

MACwired others

PhyWireless

PhyTwisted

Pair

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Wireless Phy

Frequency ： 430-432MHz 、 779-787MHz 、 2.4G

bandwidth ： 38.4kbit/smodulation ： FSKpower: 10dBmRange: 30mChannel: 500kHz

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Wireless Phy frame format

Start sequence (Preamble) MAC frame

Training sequence Start bits

80/64/40/8 bits 8 bits 0-1024 bits

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Wireless Mac

• Media access: CSMA-CD• Frame type:

Data frame: data communicationManagement Frame: Network

managementControl Frame: support data and

management

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wireless Frame format

Frame

length

Frame

Control

Duration

Frame Sequenc

e

Frame

header

CRC

Source

address

Dest. addre

ss

Frame

payload

CRC

2 byte

s

2 byte

s

2 byte

s

2 bytes

2 byte

s

6 bytes

6 bytes

0-104 byte

s

2 bytes

Header

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Physical Layer Protocol Based on Twisted Pair of Bus

Features: transmit rate: 10kbps Base band transmit: active state (logical zero) overrides idle state (logical one) in the channel Data Unit Format

Start bit

Eight data bits Parity Check bit

Stop bit

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Data Link Layer Protocol Based on Twisted Pair of Bus

Features: Provide acknowledged and unacknowledged Services Data Unit Format

Control area

Source address & Destination address

Network layer data unit

checksum

Control area includes priority bit, retry-flag bit, random bits, fragment area and address-type bit.

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Network Layer

• Support end to end communication over different communication media

• Network address （ UDS ） • Network packet format

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Network address: Device Id and Universal Device serial number

• UDS:6 bytes

Version Manufacture ID

Control gateway ID

Device ID

Bit47-45

(3 bits)

Bit44-32

(13 bits)

Bit31-8

(24 bits)

Bit7-0

(8 bits)

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Network packet Format

version

reserved

Type of Protocol

Destinatio

nUDS

Source

UDS

Packet length

Segmentation

flag

Segmentatio

n offset

CRC Payload

2 bits

2 bits

4 bits

48 bits

48 bits

10 bits

2 bits 12 btis

16 bits

0- 960 bits

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Universal Device Control Protocol :UDCP

• Application Protocol for Home network management ( device subscribe 、 unsubscribe) and device control ( control 、 check status 、 operation parameter configuration).

• Take Device files as the information base for home appliances control and management.

• Packet type: system management 、 data sharing 、 device control

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UDCP packet

Destination address

control type Datagram

6 bytes 1 byte 1 byte

Relay flag CRC enable

Reserved Group address flag

bit7 bit6 bit5-1 bit0

Control Field

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System Management

Type application length For

11 Device Subscribe confirm

7 bytes mobile->GWDevice->GW

10 Check for unregistered device

6 bytes broadcast by GW

17 GW Subscribe confirm

12 bytes GW ->device

05 Unsubscribe request

12 bytes mobile<->GW

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Data sharing

header

application length for

14 Request for device file

12 bytes GW->device

20 Request for device list

12 bytes mobile->GW

18 Request for voice file

12 bytes GW->device

15 Upload device file - device->GW

21 Upload device list - GW->device

19 Upload voice file - device->GW

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Device operation control

header application length for

01 Set the parameter of device (Set Data)

- -

02 Get the status (Get Data)

- -

06 Sharing the status automatically (Report)

- -

28 Show up (Keep alive) 6 bytes -

05 Confirm (ACK) 6 bytes -

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Device description File

for unified control command and interface

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Structure of device file

File header

Data structure

Char source

Icon source

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File headerPosition Length （ Bytes

）For

0 1 Version

1 3 Type

4 2 Size

6 1 Size of file header

7 1 Country code

8 7 Company code

15 1 Version of file

16 2 Type code of device

18 2 Production model

20 2 Attribute of device icon

22 2 Pointer of expand source

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Data structure

• Tree for device features description

(Entry)

Power (SubDir) Operation (SubDir) Parameters (CallBack) Status (Image)

Entry

On (Command) Off (Command) Set Temperature (CallBackOne)

ImageEntryCallBack

Power_Img(FlagIcon)

Progress_Img(ValSpecIcon)

Temperature _Val(DigiNumber)

……

……

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Char source

Char string 1

• Pointer to non-ASCII characters

Char string 2

Char string 3

…………

Char string n

“ 洗碗”

0xDFB4

0xCDEB

0x0000

“洗”“碗”

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Icon source

icon 0(index= 0, 16x16 lattice)

icon 1(index =1 ,16x16 lattice)

…………………….

icon n(index =n, 16x16 lattice)

icon n+1

…………………….

•Pointer to bitmap of icons

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Type of basic structure

• Pointer operation

0000 0x01430001 0x4e41………0012 0x00000013 0x000a………………0022 0xbaa3

File header

data tructure

pointer 0x000a in 0x0013Original address of data structure is 00120012 + 0x000a = 0022

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Type of attribute

• Basic attribute of node and status map

site size （ bit ） region

Bit[0..7] 8 Index region

bit[8..11] 4 Size region

bit[12..15] 4 Type region

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Device file for omnipotence remote controller

• Device browse

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• Device control


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• Parameter set


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Interface between Device and NAU

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• Device File could be either located in NAU( communication module) or in Appliance

NAU Home Appliance

Device file

Com

mun

ication Interface

Processor BoardRX

TX

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Communication

Com

mun

ication interface

Processor b

oard

RX

TX

Home appliance

Device file

NAU

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TTL signal

GNDVCCTXRX

HW Interface between Appliance and NAU

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• NAU acting as control command and status relay station

SW Interface between Appliance and NAU

NAU Home appliance

Control command

Device status

March 2006


Contact Information: [email protected]

Thanks!

Proposal.: Communication protocol and Device description for Home Automation Control Submitted By:...

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