new trends in mobile networking
TRANSCRIPT
TOPIC:
NEW TRENDS IN MOBILE NETWORKING
Accredited by NAAC of UGC, New Delhi with A Grade
Y. Krishna Kalpana
S. Junaid Faisal
C. Jyoshna
A. Jyothi
J. Karthik Kumar
K. Kavitha
U. Kavitha
G. Kusuma Latha
1973
Mobile phones are becoming media phones WAP (Wireless Application Protocol) brings standard way to
connect mobile customers to content services
Now nearly there are 2 billion mobile phone users!
50 Milj.
Users
RadioTV
WWW
Internet
GSM
35 Years155
Today there are more than 150 million GSM
subscribers world wide
WAP
The four modes for WAP communications are:
Mode UDP Port WTLS Security
◦ Connectionless 9200 No
◦ Connection 9201 No
◦ Connectionless 9202 Yes
◦ Connection 9203 Yes
Web Server
Content
CGI
Scripts
etc.
WM
L D
ecks
wit
h W
ML
-Scr
ipt
WAP Gateway
WML Encoder
WMLScript
Compiler
Protocol Adapters
Client
WML
WML-
Script
WTAI
Etc.
HTTPWSP/WTP
The first Screen of the
Application
The icon of the
applicationInstalled
on the phone
List of functionalities of
the application on the
mobile phone
Case Reporting form
with save and send
options
◦ Provide a two way communication between the client (mobile phones in the fields) and the server.
◦ This includes sending messages, receiving messages and providing communication history where the sent and received messages can be viewed.
◦ Keep track of the contact details of the users who communicate with the system.
Basic functionalities of the system:
◦ The type of message can be assistance request, so it identifies the type of message accepted and store appropriately.
◦ A number of messages are expected to be received at a time, Therefore the system should be able to manage this.
◦ Different users with different access levels will use the web application, therefore manage the users of the system and provide security.
Client Side System
Selection of the Development Environment
The client device (the mobile phone device) selected:
◦ Android OS based phone
Forms Manager
◦ Viewing the Received Forms
◦ Editing the Received Forms
Report Generator
◦ Viewing the Reports
◦ Analysis the Reports
User Manager
◦ Logging in to the System
◦ Using the User Manager
Creating New User/Contact
Editing User/Contact
Message Manager
◦ Sending SMS messages
◦ View Sent Messages
◦ Receiving SMS Messages
12CODIST-II
Free and Open Source OS
Future trend of development and application
Localization capability
Availability of applications
Others: Handset layouts, Storage, Connectivity,
Messaging, Web browser, Java support, Media
support, Development environment, Market, support
of manufacturers, etc.
De-facto world standard for wireless information and telephony services on digital mobile phones and other wireless terminals
"Internet in Every Pocket“ Objectives:General environment for wireless applications Internet or Intranet-like services and content to
mobile terminalsNetwork, bearer and manufacturer independent
WAP ForumStarted 1997 by Nokia, Ericsson, Motorola and
Unwired PlanetNow close to 500 member companies
The processor handling operational issues may handle records that drill down deep into the network operation details. These records can cover such items as:
A subscriber’s phone call attempt
Whether the attempt was successful
Whether the call was ended normally or was dropped
Date and time of the call
Signal strength of the subscriber’s mobile device as seen by the BTS
In what cell site sector was the call set up
Handover information
What channel was used
What frequency/time slot/PN number was used
GSM uses the Subscriber Information Module (SIM card) which comes in two forms – credit card sized format and thumb tip size
◦ Embedded in the card is a microprocesor, ROM and RAM
Also contains data such as:◦ The subscriber’s phone number which is referred to
as the MSISDN (Mobile Subscriber ISDN Number)
◦ The IMSI (International Mobile Subscriber Identity). The IMSI is globally unique to a particular subscriber
◦ The subscriber’s PIN which is used to prevent unauthorized use of the mobile device
◦ Authentication Keys
GSM developed in Europe in 1980s and became an international standard 13 years later
Uses TDMA framework but not compatible Over 250 GSM Networks are presently
operating in 110 countries Data rates: 9.6Kbps to 14.4Kbps Carriers: Pacific Bell (now Cingular), Voice
Stream, and now AT&T Wireless
Why is understanding Mobile networking important?
◦ As voice and data merge over mobile networks, you may be tasked securing both
◦ Wireless data handsets are inescapable
Carrier infrastructures are very complex – to what degree should one become acquainted?
◦ As security experts, there’s significant value in obtaining this knowledge to prepare you for the future
Carriers have enjoyed closed networks, opening them up to the Internet is a major challenge
spectrum of mobility, from the network perspective:
no mobility high mobility
mobile wireless user, using same access point
mobile user, passing through multiple access point while maintaining ongoing connections (like cell phone)
mobile user, connecting/ disconnecting from network using DHCP.
Client Server
Request
Response
Client/server communication
Client Server
Request
Response
Mobile agent communication
Mobile agent
Call to server procedure
DataClient Server
DataClient ServerProcedure
Client Server
Code on Demand
DataClient Serverresults
Procedure
Remote Evaluation
Structuring Distributed Applications
Foreign agent knows about mobile
Home agent knows location of mobile
wide area network
home networkvisited network
1
mobile contacts foreign agent on entering visited network
2
foreign agent contacts home agent home: “this mobile is resident in my network”
Contributions:
◦ Instant delivery of reports.
◦ Rapid communication Between professionals and
field workers.
◦ Zero data entry time.
◦ Zero or highly reduced error rate.
◦ Higher transparency and accountability.
◦ Build confidence on quality of data, instant delivery
of critical messages to field workers.
◦ Highly simplified and fast report generation.
◦ Opens the way for other similar applications.