System integration of WAP and SMS for home network system

• Editor : Chi-Hsiang Wu, Rong-Hong Jan

• School : the National Chiao Tung University

• Source : Computer Network

• Reporter : Yao

• Date : Dec. 14th, 2005

Abstract & Motivation

• A home network system (HNS) architecture integrated with wireless application protocol (WAP) and short message service (SMS) to support the connectivity between home and Internet/global system for mobile communication (GSM) networks.

• The main object of the integrated system is to remotely monitor and control the devices in the HNS via laptop computer or a GSM mobile terminal.

System Architecture (1)

System Architecture (2)

• An HNS gateway

• Appliances subsystem

• Security subsystem

• Messaging subsystem

Communication (1)

Communication (2)

• WAP protocol communicate with GSM network

• HTTP protocol communicate with Internet

• SMS protocol communicate with GSM network

Notification (1)

Notification (2)

• HNS alert message can be sent to remote mobile phone via SMS protocol

Manager-Agent model

HNS management protocol

• Managers can configure, diagnose, and maintain home devices which are connected to HNS via the HNS management protocol

• The management protocol employs the concept of a client-server model, which in turn, forms the basis for manager-agent model

• An agent entity resides in each managed device • The manager resides in the HNS gateway

Command format for management services (1)

Command format for management services (2)

• The service field specifies HS_GET_DATA or HS_SET_DATA

• The objects field is an object identifier

• Data is the value of the object

HNS gateway (1)

HNS gateway (2)

• The HNS gateway provides the interlinking of the controlled home network and the Internet/GSM network.

• The HNS gateway performs the protocol translations between the controlled home network protocol and the HTTP/WAP/SMS protocol.

Protocol stack (1)

Protocol stack (2)

• The left-hand plane is the HNS termination protocol stack consists of three layers :

--- Physical layer (PHY)

--- HNS protocol stack

--- Management protocol

• The right-hand plane is SMS, HTTP and WAP protocol stack.

HNS implementation (1)

• The HNS gateway :

--- A pentium-level desktop PC with Linux

operating system • Web server • WAP gateway • Remote access service server • Short message driver• HNS configuration tool

HNS configuration tool (1)

HNS configuration tool (2)

• Functions :

--- List

--- Add

--- Delete

--- Refresh

--- Change

--- Preference

HNS status (1)

HNS status (2)

• Data consistency problem :

• New appliances in the configuration tool :

----- HNS’s Wireless Makeup Language (WML) and

HTML pages

----- Common Gateway Interface (CGI)

Implementation of home network subsystem

• Home appliance subsystem

--- Air-condition

--- Light system

• Security subsystem

--- Charge-coupled device cameras connected to a PC as an

surveillance system

• Messaging subsystem

--- E-mail system (POP3 or IMAP4 protocol)

--- mail servers address, user IDs, passwords, and GSM phone

numbers must be given to HNS gateway in advance

The GUI for appliance objects

Real-time images

Architecture for E-mail services

Conclusion

• An HNS architecture consists of three subsystems provides remote monitoring and control of home appliances that are managed by the home gateway

• The home gateway has the ability to actively notify home users in remote locations

• The home gateway can push the altering message to home users

Future research

• Extend the HNS with real-time processing capabilities

• Develop authentication and security mechanisms for HNS

• Study distributed component object model (DCOM), common object request broker architecture (CORBA), or Java remote method invocation (Java RMI) for the remote invocation approach of HNS

• Implement more home network service and applications

報告完畢

敬請指教 !!