presentation on chatting in mobile using bluetooth

8/4/2019 Presentation on Chatting in Mobile Using Bluetooth

1/32

A NEW TECHNOLOGY BASEDCHATTING IN MOBILE SYSTEM USING

BLUETOOTH

PRESENTED BY:-

PRIYANK MISHRA


2/32

1. Bluetooth is an open wireless protocol for exchanging data

over short distances (using short length radio waves) from

fixed and mobile devices .

2. Bluetooth is actually a standard for wireless

communications between devices within a range of

10metres.

3. This technology enable users to automatically and easily

connect a wide range of computing and telecommunication

devices.

WHAT IS BLUETOOTH TECNOLOGY ?


3/32

Bluetooth uses a technique called spread-spectrum frequency hopping.

In this technique, a device will use 79 individual, randomly

chosen frequencies within a designated range

AVOIDING INTERFERENCE: HOPPING


4/32

1. Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data

being sent and transmits chunks of it on up to 79

frequencies.

2. Unlike infra-red, Bluetooth does not require any line-of-

sight positioning of connected devices like Infra-red.

3.Pico net is the important factor in Bluetooth connectivity.

It is simply a collection of Devices connected through

Bluetooth, possessing Master-Slave relationship.

HOW BLUETOOTH TECHNOLOGYWORKS ?


5/32

4. Two Bluetooth products can exchange their addresses and

capabilities just after coming within the range of about10metres.

5. The radio operates on the globally-available unlicensed

radio band, 2.45 GHz and supports data speeds of up to 721Kbps.

6. Connections can be point-to-point or multipoint. The

maximum range is 10 meters but can be extended to 100

meters by increasing the power.


6/32

BLUETOOTH FREQUENCY

Has been set aside by the ISM for exclusiveuse of Bluetooth wireless products

Communicates on the 2.45 GHz frequency


7/32

What we will be Doing ?

MOBILE APPLICATION BASED PROJECT

1. It will provide messaging system between two

mobiles connected via bluetooth.2. Like any other chatting system, it will list the

number of available members having bluetoothactive on their device.

3. It will allow chatting between any two of the activemembers at a time.

4. The best feature will be that it will be free of cost.


8/32

Why this project??

1. this project will help the users to use their mobilesmore effectively.

2. more mobility,more freedom.

no more does the user has to depend on network.So even if you are at a place where there is nonetwork,you can still chat.

3. cost effective.

this application will allow the users to chat free of cost.

4. added mobility.no tention of wires.


9/32

ARCHITECTURE


10/32

What we have done ?

User can Chat with other device without anydisturbance at one person at a time.

Created a Front End for Users to interact with otherdevices using our Application.

We have defined FOUR categories in our Interfacei. ADD USERS

ii.

DELETE USERSiii. SEARCH USERS

iv. LIST USERS


11/32

Continued

SEARCH USERS :When User selects this option then ,It Enables user to search all BLUETOOTH deviceswhich are active within a range.

ADD USERS :When all the BLUETOOTH devices aresearched, If user select this option for any particularsearched device , Then It will be added as a friend in

the List of Currently available users.


12/32

Continued.

LIST USERS :When user selects this option , then it willshow all the users currently available for messaging.When user select any one of the friend from the listthen messaging is Enabled for that user.

DELETE USERS : When user select this option, It willdelete any user from the currently available list of

friend, If user does not like to chat with it.


13/32

TOOLS USED

1 JAVA DEVELOPMENT TOOLKIT (JDK 6 or MORE).

2Java Wireless Toolkit (Wireless Toolkit 2.5.2 )

3Alljava Enabled phone with BLUETOOTH support.


14/32

The Bluetooth Service ModelBluetooth devices can offer Client and Server

functionality at the same time. On a hardwarelevel, a single master Bluetooth device cansynchronize up to seven slave devices in aBluetooth piconet.

Devices are the discoverable entities in aBluetooth network. The discovery process is

called an inquiryin Bluetooth lingo. You needto perform an inquiry to discover devices inyour PAN before finding out what services thedevices are offering.

Each service in a Bluetooth network is

uniquely identified by a UUID.Any particulardevice in the Bluetooth network can beoffering zero or more services. The sameservice may be offered by more than onedevice in the network.


15/32

ALGORITHM FOR OUR APPROACH.

1. START

2. SWITCH ON THE BLUETOOTH IN ALL THEDEVICES.

3. The devices will ask for security issues and ask if userwants to switch on the bluetooth.

4. The user then accepts the security issues and grantspermission to the device to switch on bluetoth for thedevice.


16/32

5. The bluetooth then looks for all the devices presentwithin the range. This is the searching part.

6. The device then lists all the users present.

7. Then we select 1 user from the available users and

connect our device using bluetooth to the other device.

8. A connection is established between 2 users.

9. Now they can start shatting using this application.


17/32

start

Switch on the device.

The devices will ask for security issues and ask

switch on bluetooth of your device

NO

Search all the devices present .

List all the devices present.

The user selects 1 user from the available list of users

Close application

YES

A connection is then established between both the users usingbluetooth.

The users can now start chatting.

Close the application.

Contro

lflow

dg.


18/32

OBJECTIVEEven though there need for good communication skills is

stressed upon, we observe that people dont communicate

freely in face to face interactions.

Our application allows the user to overcome this hurdle

allowing people to have a friendly communication. It also

allows people to communicate silently in their workplaces.

The application provides the basic requirements and neat

graphical user interface to chat.

Mainly Inexpensive.


19/32

1 Bluetooth is wireless and automatic. You don't have to

keep track of cables, connectors, and connections, andyou don't need to do anything special to initiate

communications.

2 Bluetooth is inexpensive.

3 The ISM band that Bluetooth uses is regulated, butunlicensed. Governments have converged on a singlestandard, so it's possible to use the same devices

virtually wherever you travel.

BLUETOOTH APPLICATIONS


20/32

APPLICATION CONT

4 Bluetooth uses frequency hopping. Its spreadspectrum approach greatly reduces the risk thatcommunications will be intercepted.

5. There is no need of transceivers or base stations totransfer the signal.

6. Any where you can chat with your friend if the deviceis within range.


21/32

ADVANTAGES OF BLUETOOTH

TECHNOLOGY1 Bluetooth Devices are Wireless thus reducing

the overhead and expanses of wired set up.

2 Most important feature is that, Bluetooth

Technology is Inexpensive.

3 Low Energy Consumption.


22/32

ADVANTAGES CONT

4. Bluetooth is Automatic, just activate your device

once connected you can share data.

5. Share Voice and Data, like pictures, videos, data

file etc. AND the list continues


23/32

1. Bluetooth devices can not be connected with morethan one devices at a time, as it finds problem in

discovering the intended recipient device.

2. Bluetooth has a low data rate( i.e.1 MBps) incomparision to infra-red(i.e.4 MBps).

3. Small throughput rates- Data Rate 1.0 Mbps

DISADVANTAGES OF BLUETOOTH


24/32

1. Bluetooth will be able to complete all other wireless

technologies, such as Wi-Fi networking , infra-red data

association , etc.

2. With Bluetooth based chatting and file transfer system,

things will not only become easier, but a newer outlook to

the bluetooth technology will be developed.

3. People will be able to chat at places where they have no

towers, no networks.

4. Enhancement of mobile utilization.

FUTURE OF BLUETOOTH


25/32

What and how??

1. the 1st step requires building the code in wirless toolkitprovided by java.

2. the snapshot of the BUILD stage is as shown in thenext slide.

RUNNING OF CODE


26/32

RUNNING OF CODE


27/32

2. When the build is successful, we run the code.

Here we see, there are 4 MIDlets running.


28/32

3. Each device then requests for switching ONBluetooth.


29/32

5. The devices now detect each other.

6. One of the devices have to be selected.

St t th h t


30/32

7. Start the chat.

YOU CAN CHAT


31/32

YOU CAN CHAT


32/32

presentation on chatting in mobile using bluetooth

Documents