A Wireless Two-Way Messaging

System

Pigeon:

Wireless communication is the transfer of information over a distance without the use of electrical conductors or wires.

IS WIRELESS COMMUNICATION

TYPES OF WIRELESS COMMUNICATION

Packet Switching

Circuit Switched Data

Two Way Messaging

System

Data Network

Public Switche

d Telepho

ne Network

Cellular Networ

k

Mobility

Base Station

Bidirectionality

disconnection

Asymmetry

USERAGENT

RUSER

AGENTS

Pigeon control fuctions

Location tracking forwarding/filtering

Address and message expansion message status query

Originating message code

Full text reply

Full text reply

Flexible message in message storage encoding

User Agent User

AgentUser

Agent

Interworking

Function

Batch Server

Batch Server

Services

Services

Distribution Server

Transaction Server

Messaging Coordinato

r

One way paging and Two way paging

Hello

Call is made to the pager service

Operator takes message and pager number

Base station transmits message to the pager

Pager receives messageAdvantage

of two way

messaging

is the

reply

compone

nt.

Base transeiver

Connects subsciber to cellular network

Base Station

Care for lunch \emphasize {now}?

Sure \ I am busy

McDonalds/Taco

Bell

Choice component

Reply component

choices

Wireless Media

User (Pager)

User AgentProxy

Location

Status

User Agent doesn’t migrate as subscribers roam and is always

Addresses

References To….

Modifiers

uplink

Eg: LunchDinner

5 0 0

New mail!!!! User to user communication

Reliable Delivery

Group addressing

Ad hoc group

Personalizable

with the user agent

Address Book

Message List

New location of pager found

Batch server

tt

closed

open

Transaction

ManagerRecipient

State

Conversation Manager

Recipient

State

Recipient

State

Recipient

State

Transaction Server

received

sent

done

replied

Distribution server

Text to voice converter

Else…

Applications of Pigeon

Value added services

User Agent…thus saves

resources on air

interface