Jeffrin Jolly

Nikhil Mendonca

Yesu Mariadas

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International Journal of Current Engineering and Technology    E-ISSN 2277 – 4106, P-ISSN 2347 – 5161 
©2015INPRESSCO®, All Rights Reserved  Available at http://inpressco.com/category/ijcet 
 
  General Article 
 
907| International Journal of Current Engineering and Technology, Vol.5, No.2 (April 2015) 
 
Study of messenger and Wi-Fi sharing in android 
   
Nikhil Mendonca†*, Jeffrin Jolly† and Yesu Mariadas† 
   
†Information Technology, Mumbai University, Xavier Institute of Engineering (XIE), Mahim, Mumbai-400016, India  
   
Accepted 22 March 2015, Available online 26 March 2015, Vol.5, No.2 (April 2015) 
 
 
Abstract 
 
A Messenger application is a service wherein a user can not only communicate over the Internet in the form of 
messages but also can exchange data in the form of images, audio and video files. So basically the user has in 
numerous uses of these services and comparatively has to pay a meager price for merely the data services used. But 
what if a user did not have access to the cellular network by some means. For this there is also a feature incorporated 
in the application of Wi-Fi sharing which would enable any user to perform similar operations without the use of 
Internet and instead use the Wi-Fi network of a mobile device and exchange data that are quite larger in terms of 
size. This paper aims at providing a basic idea on the implementation and working of a Messenger and a Wi-Fi 
sharing application based in android, which include the protocols, algorithms and methods that can be used for 
implementation. 
 
Keywords: Google Cloud Messenger, Adhoc, Wireless Networks, Instant Messaging, Wi-Fi. 
 
 
Introduction 
 
1 Instant messaging, a communication trend carried out 
between two or more reasons to communicate by 
exchanging text messages in real time. This form of 
messaging compares to email, short messaging service 
(SMS) allows for quick and easy responses to satisfy 
ones need for instant and constant communication. 
 Today, Instant Messaging (IM) applications have 
rapidly become accepted by business as viable 
employer communication tools. Instant messaging is 
more instant than email, obviously easy-to-use and 
provides the real time collaboration organizations 
need to ensure quick judgments and decisions using 
Instant Messaging, organizations and their business 
partners can make a conference share files and 
information easily over the Internet. 
 We will eliminate the need the internet in sharing 
messages to people within a particular limited range 
using Wi-Fi Network. Wireless Networks (Wi-Fi) are 
widely used in the link devices and data transmission 
between them. The revolutionary idea behind the 
success of such a technology is the absence of wires. 
Data travels among RF radio frequency. The biggest 
advantage is that the wireless network is the device 
mobility. A wireless Network is easy to install and 
configure. Therefore, a single device can join the 
network from any point of the room if still under 
coverage. 
 Initially we need to assemble and modify a Linux 
kernel on embedded devices, smart phones. We chose 
                                                          
*Corresponding author: Nikhil Mendonca 
to use Android as it is an Open source Operating 
System based on Linux kernel. 
 As it should be for any technology, Android gives an 
open platform for creating mobile applications. In fact 
it is a real stack of tools and libraries that enable the 
successful implementation of mobile application. The 
goal is to provide everything an operator, vendor of 
devices or developer need to achieve their target. 
Originally developed by Google and sponsored by the 
biggest alliances Open Handset Alliance, Android is a 
complete and innovative platform for mobile devices 
released with Open Source license in October 2008.  
 Thus we grouping two different technologies to 
create a better communication application which can 
send messages over the Internet and wirelessly 
transmit messages without the use of Internet using 
Wi-Fi which can be seamlessly done using the Wi-Fi 
card installed on the our disposable smart phones. 
 
Proposed System 
 
The application will allow users to send/receive 
messages over the Internet. The application uses GCM 
(Google Cloud Messaging) service. Google Cloud 
Messaging for Android (GCM) is a service that allows 
you to send data from your server to your users' 
Android-powered device, and also to receive messages 
from devices on the same connection.  The reason as to 
why we decided to use GCM is because GCM is very 
light in nature .The GCM service handles all aspects of 
queuing of messages and delivery to the target Android 
application running on the target device. GCM is a open 
Nikhil Mendonca et al          Study of Messenger And Wi-Fi Sharing in Android 
 
908| International Journal of Current Engineering and Technology, Vol.5, No.2 (April 2015) 
 
source and thus the use of service is completely free of 
cost. The API’s used by the application are Google 
Cloud Messaging, Google Cloud SQL, Google Cloud 
Storage, and Google Cloud JSON API. For the use of the 
GCM service a Google account is mandatory. The 
developed application servers send messages to their 
Android application. The GCM Cloud Connection 
Server, you can receive upstream messages from the 
user's device. The system will wake up the Android 
application via Intent broadcast when the message 
arrives, as long as the application is set up with the 
proper broadcast receiver and permissions.  
 
 
 
Fig 1 Representation of the GCM Life Cycle 
 
The application will be running on Android 2.2 or 
higher that also have the Google Play Store application 
installed, or an emulator running Android 2.2 with 
Google APIs. It uses an existing connection for Google 
services. For pre-3.0 devices, this requires users to set 
up their Google account on their mobile devices. A 
Google account is not a requirement on devices 
running Android 4.0.4 or higher. A GCM 
implementation includes a Google-provided connection 
server, a 3rd-party app server that interacts with the 
connection server, and a GCM-enabled client app 
running on Android devices. 
 The integrated Wi-Fi sharing system can send 
messages using the Wi-Fi card installed on the devices. 
Wireless Networks are widely used in the link devices 
and data transmission between them. The 
revolutionary idea behind the success of such a 
technology is the absence of wires Data travels among 
RF radio frequency. The biggest advantage is that the 
wireless network is the device mobility. A wireless 
Network is easy to install and configure. Mode 
Infrastructure Standards on Wi-Fi connection are 
defined by IEEE 802.11 and Wi-Fi Alliance. Using those 
specifications, a wire-less card can be attached 
(connected) to an Access Point (AP) which provides the 
connection capabilities. On top of this, others services 
can be accessed such as communications and resource 
sharing. In infrastructure mode each node is connected 
to the Access Point which is in charge of coordinating 
the communications and providing the media network 
resources to each node. 
 Mesh network is where nodes can communicate 
pair to pair. One of the big issue is related with Wife 
signal strength and node mobility. Due to their 
motilities, deployment of nodes may change frequently. 
Due to limited coverage, a connection with another 
node might be lost. In this situation, the 
communication cannot happen. An intermediary node 
is needed. The infrastructure architecture is fully 
decentralized and there is not fix structure of the 
network. We call, single hop a communication involved 
2 nearby nodes, or multi-hop a communication 
involved at least two nodes. The number of hops 
represents the number of the intermediary nodes the 
messages has to jump through. 
 In this way, each node has a double duty: hosting, 
acting as source node or communication end point, and 
routing acting as intermediary node 
 
Conclusion 
 
This project represents an idea that will give service to 
the users and reduce the efforts. Technologies were 
created by human beings for human beings to reduce 
his/her efforts and this project delivers an idea that 
can reduce the user’s effort to communicate seamlessly 
with other users. This  is our effort to create a 
messaging application that can send/receive messages 
over the internet and without the use internet using 
wireless technologies currently available and can 
seamlessly send messages to the another users that are 
in a particular range eliminating the need of internet 
data charges or mobile operator charges. 
 
Future scope 
 
Our project makes use of Wireless Networking based in 
Android. The Field of Android is vast and has many 
more areas to be explored and studied. The Wi-Fi 
ADHOC system has many takers and it has scope 
beyond limits. 
 In the future there may really not be any mandatory 
need of cellular network in a mobile device as there 
would wireless connectivity through which the devices 
would be connected in a mesh. And there would 
number of mesh present which would enable the 
communication of one device in a mesh to another 
device in a mesh without any need of physical 
connectivity present. 
 
Acknowledgement 
 
We would like to thank our project guide Prof. Suvarna 
Bhoir for her constant support and valuable feedback 
at all times. She gave us all the freedom to work on our 
project never restricting us or our research in any way. 
Thus big Thank You to our guide Prof. Suvarna Bhoir. 
Nikhil Mendonca et al          Study of Messenger And Wi-Fi Sharing in Android 
 
909| International Journal of Current Engineering and Technology, Vol.5, No.2 (April 2015) 
 
We would like to thank our college principal Dr. Y D 
Venkatesh and our director Fr. Francis De’Melo.  Also 
to thank the staff of the IT Department for being very 
supportive at all times and for providing us an 
excellent environment in researching and writing this 
paper. 
 
References 
 
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Study of messenger and Wi-Fi sharing in android

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