CENG 499 Senior Design Project

WIRELESS APPLICATION PROGRAMMING WITH J2ME AND BLUETOOTH

Muhammed Mamedov / Nasif EkizHaluk Gumuskaya

July 03 2003, IstanbulFatih University – Computer Engineering Department

Overview

Definition of the problem Justification for the problem chosen Previous work Background Solution for the problem Implementation Future work Summary

Definition of the problem

The design, development, testing and verification phases of a Bluetooth system prototype will be accomplished using J2ME.

A client application simulating mobile equipment with a Bluetooth module having multimedia capabilities will be implemented.

A server application putting emphasis on the wide range of applicability of Bluetooth will be developed.

Bluetooth protocol stacks will be examined and one of them may be used or a new one will be developed.

The theoretical and practical issues like file transfer, ad-hoc networking, device synchronization, peripheral connectivity will be investigated.

Justification for the problem chosen

One of our project aims is to see what today’s technology can do for tomorrow and how tomorrow’s world will look like.

In other words:

Combine Bluetooth with J2ME in a multimedia environment.

Client/Server Application and its implementation in wireless environments.

Previous work

JSIS – Java Student Information System

“Develop a system that will enable students to perform their tasks in an easy way and will let them access needed information from anywhere* and anytime they want!”

*With whatever technology they have (Internet, Mobile Devices, PDAs, etc…)

JVS – Java Video Streaming

“Enable users to access any needed media data (audio/video) by means of a mobile device any time needed"

>> Projects Overview

Previous work

JSIS – Java Student Information System

- J2ME (MIDP 1.0)- Servlets/JSP- Database Programming (Oracle)

JVS – Java Video Streaming

- J2ME (MIDP 2.0) - MMAPI (Multimedia API) - Servlets - Database Programming (Oracle)

>> Technologies Used

Background

What is Bluetooth ? Short-range Secure radio waves Conceived as basic cable replacement technology Operates in the 2.4 GHz Industrial, Scientific, and

Medical(ISM) band which is unlicensed Enables wireless personal ad-hoc networks(PAN) Wireless PANs will enable the creation of “smart

environments” in which virtually any electronic device can be networked

>> Bluetooth

Background

SIG (Special Interest Group) Charter of SIG was to monitor the technical

development of a short-range and to create an open global standard

The Bluetooth Specification Capable of voice and data communication Distance roughly 10 to 100 meters

Connections Ad-Hoc point to point Ad-Hoc point to multipoint Units can dynamically be added or disconnect from

the network

>> Bluetooth

Background

Protocol Stack

>> Bluetooth

Background

Some components are Bluetooth specific (Bluetooth Radio)

Some are reused from other specifications (IP, WAP, OBEX)

Some have been modified for the Bluetooth protocol stack (vCard/vCal, WAE, Audio)

>> Bluetooth

Background

Profiles

>> Bluetooth

Background

Profiles describe how different parts of the specification can be used to fulfill a desired function for a Bluetooth device

Profiles present the default solution for a usage model and form the basis for Bluetooth interoperability and logo requirements

Each Bluetooth device must support at least one profile, but may support several profiles

If two devices support same profile, then they should be able to interoperate

>> Bluetooth

Background

Java APIs For Bluetooth Wireless Technology JSR-82 This API is an optional package that can be used to

extend the capability of J2ME profile, such as Mobile Information Device Profile (JSR 37)

The overall goal of this specification is to define a standard set of APIs that will enable an open, third-party application enviroment for Bluetooth wireless technology

>> Bluetooth

Background

This API mainly describes the following contents: Device Discovery Service Discovery Service Registration Generic Access Profile Serial Port Profile Logical Link Control and Adaptation Protocol Object Exchange Protocol (OBEX)

>> Bluetooth

Background

What is J2ME?

Unlike J2SE, J2ME is not a piece of software, nor is it a single specification.

J2ME is a collection of technologies and specifications that are designed for different parts of the small device market.

J2ME is divided into configurations and profiles.

>> Java 2 Micro Edition

Background

Configurations - Details of virtual machine - Base set of APIs

Profile- Builds on a configuration - Adds more specific APIs to make a complete environment for building applications.

(MIDP, MMAPI)

>> Java 2 Micro Edition

Background

CLDC – Connected, Limited Device Configuration

The Mobile Information Device Profile (MIDP)*, which is based on CLDC, is the first finished profile and thus the first finished J2ME application environment.

*We will use MIDP 2.0 since it contains MMAPI (Multimedia API)

>> Java 2 Micro Edition

Solution for the problem

We are going to implement Java and Bluetooth enabled Client/Server application.

At Client side (MIDP 2.0 compatible mobile device) will be used for audio/video playback.

Server side will be implemented using Servlet technology according to Front Controller Design Pattern.

Implementation

At the present moment we do not have a complete implementation of our project, but still we will be showing you two demos we were working on all these time.

Server side is implemented by Nasif Ekiz Client side is implemented by M.Mamedov

JVS Demohttp://jvs.turkmenweb.com

Rococo Bluetooth Simulator Demo

Future work

In the future we are going to develop Client/Server application of the JVS which will be using Bluetooth technology as the main way of communication and data transfer between Client and Server.

Summary

We learnt and implemented two challenging technologies of tomorrow already available today, Bluetooth and J2ME. We also learnt how Bluetooth is integrated with J2ME environment.

We developed an application (JVS)* that performs audio/video streaming using J2ME.

* It is lacking Bluetooth part only.

The End

Thank you!Thank you!