niyati presentation

8/7/2019 NIYATI PRESENTATION

1/19

1


2/19

INTRODUCTION OF WAP

2

WAP ARCHITECTURE

WAE OVERVIEW

HOW THE WAP WORKS?

WAP APPLICATON

WAP STANDARD


3/19

3

Wireless Application Protocol (commonly referred to as

WAP) is anopen international standard[1] for applicationlayer

network communications in a wireless communication

environment.

Its mainuse is to enable access to the Mobile Web from a

mobile phone or PDA.

A WAP browser provides allof the basic services of acomputer based web browser but simplified tooperate within

the restrictions of a mobile phone, such as its smaller view

screen.


4/19


5/19

5August 2002

WAP PROTOCOL STACK


6/19

6

How Wireless Internet Works

Tocreate wireless Internet content, a Web site

creates special text only or low graphics versions

of the site.

The data is sent inHTTP form by a Web server to a

WAP gateway.

This system includes the WAP encoder, script

compiler and protocol adapters toconvert the

HTTP information to WML.

The gateway then sends the converted data to the

WAP client onyour wireless device.


7/19

7


8/19

8


9/19

9

WAE - holds the tools that wireless Internetcontent developers use.

WSP - determines whether a sessionbetween the device and the network will beconnection-oriented or connectionless.

WTP - acts like a trafficcop, keeping thedata flowing in a logical and smooth manner.

It also determines how toclassify eachtransaction request:Reliable two way(WTP/C)Reliable one way(WTP/T)Unreliable one way(WTP/D)

WTLS-

provides manyof the same securityfeatures found in the Transport LayerSecurity(TLS) part of TCP/IP.

WDP - makes it easy to adapt the transportlayer to a varietyof bearers because all thatneeds tochange is the informationmaintained at this level.

WAP ARCHITECTURE


10/19

10

To minimize bandwidth requirements, and guaranteethat a variety of wireless networks can run WAPapplications, a new lightweight protocol stack called the

WAP protocol stack was developed.

WAPThe application protocol is a communication protocol stackthat is embedded in each enabled wireless device (also

known as the user agent).The server side implements the other end of the protocol,which is capable ofcommunicating with any WAP client.The server side is known as a WAP gateway and routesrequests from the client to an HTTP (or Web) server.

WAEThe Wireless Application Environment holds the toolsthat wireless Internet content developers use. Theseinclude WML and WMLScript, which is a scriptinglanguage used in conjunction with WML. It functions

much like Javascript.


11/19

11

WSP

The Wireless Session Protocol determines whether a

session between the device and the network will beconnection-oriented or connectionless.

A connection-oriented session means that data will bepassed both ways between the device and the network.

WSP would then send the packet to the WirelessTransaction Protocol layer.

If the session is connectionless, commonly used wheninformation is being broadcast or streamed from the

network to the device

WSP redirects the packet to the Wireless DatagramProtocol layer.


12/19

12

WTLS

Wireless Transport Layer Security providesmany of the same security features found inthe Transport Layer Security (TLS) part ofTCP/IP.

It checks data integrity, provides encryptionand performs client and server authentication.

Network carriers, or bearers, can be any of

the existing technologies that wirelessproviders use

The WSP and WTP layers correspond toHyperText Transfer Protocol (HTTP) in the

TCP/IP protocol suite.


13/19

13

WAP 1.X

The WAP 1.0 standard, released in April 1998,

described a complete software stack for mobile

internet access.WAP version 1.1 came out in 1999. WAP 1.2, the

finalupdate of the 1.X series was released in June

2000. The most important addition inversion 1.2 was

WAP push.

The WAE space defines application-specific

markuplanguages.For WAP version 1.X, the primarylanguage of the

WAE is WML, In WAP 2.0, the primarymarkup

language is XHTML Mobile Profile.

WAP STANDARD


14/19

14

WAP Push has been incorporated into the

specification to allow WAP content to be pushed to themobile handset with minimumuser intervention.

A WAP Push is basically a specially encoded message

which includes a link to a WAP address.

WAP Push is specified on topofWDP; as such, it can

be delivered over anyWDP-supported bearer, such as

GPRS or SMS.

Most GSM networks have a wide range ofmodified

processors, but GPRS activation from the network is

not generally supported, so WAP Push messages have

to be delivered on topof the SMS bearer.

On receiving a WAP Push, a WAP 1.2 or later enabledhandset will automaticallygive the user the option to

access the WAP content. This is also known as WAP

Push SI (Service Indication).

The network entity that processes WAP Pushes and

delivers themover an IP or SMS Bearer is known as a

Push Proxy Gateway (PPG).

WAP Push


15/19

15

WAE specifies or adopts a number ofcontent formats that

facilitate inter-operable exchange of data.The most important formats are the encoded WML and

the WMLScript bytecode formats.

The encodingof WML and WMLScript makes transmission

of WML and WMLScript more efficient and minimises the

computational efforts needed to execute themon the client.

WAE adopts an additionalclass ofmedia types to facilitate

the exchange of data objects betweenclient and server or

between twoclients.

These are currentlylimited to electronic business cards andelectroniccalendar objects.

Such objects may be exchanged using WDP datagrams or

through a WSP session.

Other content formats include the WAE image exchange

format and application specific formats.

WAE SPECIFICATION


16/19

16

WAE provides a visual environment that is designed toaddress severalcompeting requirements, including support

for multiple pixels depths, support for colourspace tables,

small encoding, verylow CPU and RAM decoding and

presentation

Demands.WBMP is an encapsulation format, eg,

colour table (if any), image bit planes, etc.

The WBMP specification is thus divided into twoparts:

1. The generic header contains the following information,

which is common to all image formats.

Type

Width and height

WBMP versionnumber

WBMP SPECIFICATION


17/19


18/19

18

WHO WILL BE USING WAP ?

YOUNG PEOPLE

BUSINESS PEOPLE

YOUR NEIGHBOURS

YOU

ADVANTAGES

FAST AND EASY

PRIVATE

NOT TOO EXPENSIVE

DISADVANTAGES

TOO SMALL SCREEN

TOO DIFFICULT TO WRITE AND READ

LITTLE MEMORY CAPACITY


19/19

19

Location-based services1. Real-time traffic reporting

2. Event/restaurant

recommendation

3. Highlycustomized ads

4. Instant messaging-typebuddylocation

Enterprise solutions

1. Email access

2. Database access3. A global intranet

4. Informationupdates pushed

toWAP devices

Financial services1. Banking

2. Bill-paying

3. Stock trading

4. Funds transfers

Travel services

1. Schedules and

rescheduling2. Reservations

Some WAP applications

niyati presentation

Documents