Mobile Computing - 國立台灣科技大學

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2001/9/21

Prof. Huei
-
Wen Ferng

1

Mobile Computing

Assistant Professor: Huei
-
Wen Ferng


Office: R503

URL: http://santos.ee.ntu.edu.tw/~wen

September 21, 2001

2001/9/21

Prof. Huei
-
Wen Ferng

2

Textbooks/ References


Mobile Data & Wireless LAN Technologies
(Rifaat A. Dayem/ Prentice Hall/


ISBN 0
-
13
-
839051
-
7/ Pearson Education
Taiwan Tel: 23702337)


Wireless Personal Communications
Systems (David J. Goodman/ Addison
Wesley/ ISBN 0
-
201
-
63470
-
8/


全華

Tel: 25071300)


Selected Papers

2001/9/21

Prof. Huei
-
Wen Ferng

3

Grading


Midterm exam 30%


Final exam 30%


Final report 30%


Homework/Participation 10%

2001/9/21

Prof. Huei
-
Wen Ferng

4

Contents/ Course Outline


Introduction: Why and Who Will Be Mobile?


Introduction: Wireless Networking


Mobile Data Services & Technologies


Wireless LAN Technologies & Products


AMPS System: Analog Cellular System (1G)


GSM System: Digital Cellular System (2G)


The Third Generation Wireless Communications
System (3G)


Other Supplementary Topics

2001/9/21

Prof. Huei
-
Wen Ferng

5

Chapter 1

Introduction:

Why and Who Will Be Mobile?

2001/9/21

Prof. Huei
-
Wen Ferng

6

Telecom Networks/Systems


Wired Networks (Internet)


Local Area Networks (LANs)


Public Data Networks, i.e., WANs


Wireless Networks


Wireless LANs


Mobile Data Networks


Fixed Telephone Networks, i.e., Public
Switched Telephone Networks (PSTNs)


Mobile Phone Systems

2001/9/21

Prof. Huei
-
Wen Ferng

7

Telecom Statistics

Note: According to Jan. 2001 statistics, total mobile phone subscribers are


18.3M in which CHT: 4.7M(25.7%), and others: 13.61M(74.3%)


(1)
Telephone (M)


(2) Mobile phone (K)


(3) Radio paging (K)



(4) Internet (K)


9.17

(7.9%)

770

(31.8%)

2,083

(20.5%)

21


10.01

(9.2%)

970

(26.0%)

2,301

(10.5%)

165

(686.0%)

10.86

(8.5%)

1,492

(53.8%)

2,641

(14.8%)

429

(160%)

11.50

(5.9%)

4,727

(217.0%)

4,261

(61.3%)

1,665

(288%)

12.04

(4.7%)

11,541

(144.0%)

3,873

(
-
9.1%)

2,874

(72.6%)

12.64

(5.0%)

17,743

(53.7%)

2,867

(
-
26.0%)

4,650

(61.8%)

1995 1996 1997 1998 1999 2000

2001/9/21

Prof. Huei
-
Wen Ferng

8

Some Forecasts


In 3 years, Internet traffic will grow to 10,000
times its current level.


Global e
-
business revenue will grow 86%
per year to $ 1.4 Trillion in 2003.


Bandwidth consumption will grow by a factor
of 100 to 200 over the next four years.


2001/9/21

Prof. Huei
-
Wen Ferng

9

What is Mobile Computing?


Mobile Computing is also known as
“Ubiquitous Computing” (anywhere, anytime,
any device)


The scope covered by Mobile Computing
roughly includes: Mobile Data and Wireless
LANs

2001/9/21

Prof. Huei
-
Wen Ferng

10

Mobile Computing Chart

Verticals

Horizontals

Mobile operation systems

Notebooks

PDAs

Phones

Others

WANs

LANs

Applications

Operating systems

Devices

Wireless networks

2001/9/21

Prof. Huei
-
Wen Ferng

11

Application Layer


Vertical applications
: those apply to a
function part of an industry such as field
sales and filed service, or to specific market
segment such as banking or health care


Horizontal applications
: apply to many
people across most market segments


2001/9/21

Prof. Huei
-
Wen Ferng

12

Operation Systems Layer


This layer provides tools for application
programmers to access different mobile
devices and different wireless networks


A key layer to rapid growth of wireless
networking and proliferation of applications

2001/9/21

Prof. Huei
-
Wen Ferng

13

Device Layer


All the mobile devices we carry with us:


Notebook computers


Personal Digital Assistants (PDAs)


Cellular phones


Personal communicators


Combination devices


Combination devices are now rapidly
emerging

2001/9/21

Prof. Huei
-
Wen Ferng

14

Wireless Networks Layer


The Wireless Wide Area Network (WAN) is also
called “
Mobile Data
” including:


Packet networks
: RAM/Mobitex, ARDIS/Modacom


Paging networks


Data over cellular
: CDPD (over AMPS), GPRS (over
GSM)


Data over satellite


Wireless LANs
: with much higher rate but smaller
coverage than Mobile Data networks

2001/9/21

Prof. Huei
-
Wen Ferng

15

Applications Market by 2005

1
6
%
8
%
5
%
2
6
%
4
5
%
T
r
a
n
s
p
o
r
t
a
t
i
o
n
F
i
e
l
d

s
e
r
v
i
c
e
F
i
e
l
d

s
a
l
e
s
P
e
r
s
o
n
a
l

c
o
m
m
u
n
i
c
a
t
i
o
n
s
M
o
b
i
l
e

o
f
f
i
c
e
2001/9/21

Prof. Huei
-
Wen Ferng

16

Field Sales Application


Sales quotation


Inventory check


Order entry


Credit authorization


Invoicing

2001/9/21

Prof. Huei
-
Wen Ferng

17

Field Service Application


Obtaining a maintenance history of the item
requiring service


Performing complex diagnostics that require
access to databases and applications at other
locations


Checking parts inventory if required


Updating the maintenance database after the
service is done


Invoicing for the job


Real
-
time dispatching of the filed engineer

2001/9/21

Prof. Huei
-
Wen Ferng

18

Transportation Application


The oldest application


Including:


Automatically locating the vehicle


Dispatching the vehicle to the next job


Routing the vehicle if required


Capturing data from the vehicle

2001/9/21

Prof. Huei
-
Wen Ferng

19

Personal Communications
Application


Messaging


Calendaring


Directories


Info Systems


Fax

2001/9/21

Prof. Huei
-
Wen Ferng

20

Mobile Office Application


Fax


E
-
mail


LAN access


File transfer


Database access

2001/9/21

Prof. Huei
-
Wen Ferng

21

Vertical Market Examples


Airlines


Police


Field sales


Emergency


Hospitals


Maintenance


Retail stores


Stock exchanges


Casinos


Hotel


Taxicabs


Rental car agencies


Transportation

2001/9/21

Prof. Huei
-
Wen Ferng

22

Challenges


Security


User authentication


Data privacy


Privacy of user location


Bandwidth


Limited bandwidth
(10K~10M)


Software


Still in its infancy


The main/ biggest
reason for late data
implementations


Safety


Radiation is harmful to
human beings


Trends: low power, thus
less radiation

2001/9/21

Prof. Huei
-
Wen Ferng

23

Application/Technology Matrix

Sector

Application

Technology

Cellular

Paging

Mobile Data

WLANs


Private

(corporate)

Service
engineering

**

*

**

*

Order entry

**

0

**

*

Vehicle routing

**

0

**

***

Incident control

**

0

**

***




Public

Network

services

Facsimile

***

0

*

0

Text messaging

**

***

***

***

Info services


News

*

**

*

0


Market

*

**

*

0


Financial

*

**

*

0

Location tracking

*

0

0

0

Traffic alerts

*

***

**

0

2001/9/21

Prof. Huei
-
Wen Ferng

24

Horizontal Application Examples


Near term horizontal applications (LAN app.)


Dynamic work environment


Trade show


conference


Difficult to wire areas


New employees who need immediate service


Broad
-
based horizontal applications (WAN app.)


Wireless meeting


Wireless traveler


Interactive TV

2001/9/21

Prof. Huei
-
Wen Ferng

25

Positioning of Wireless Networking

Wireless
Data

Today

Future

Mobile
Data

10
Kbps

100
Kbps

Wireless
LANs

1
Mbps

10
Mbps

Wired
Data

Today

Future

Wired
Data

100
Kbps

>1
Mbps

Wired
LANs

10
Mbps

>100
Mbps


Comparison between wireless data & wired data capacities


Position of wireless networks relative to wired networks:


Not a replacement but an extension to wired networks

2001/9/21

Prof. Huei
-
Wen Ferng

26

Case Studies


ADP (Automatic Data Processing)


British Airways


HP in the UK


South Dakota University


Integrated Device Technology


Revenue Canada


LBS platform by OleMap

2001/9/21

Prof. Huei
-
Wen Ferng

27

Why LBS Platform? Why OleSpot?


August 30, 2001

m
-
Commerce vs. Location
-
based Service

Location Based Service
研討會

主辦單位
:
國立臺灣科技大學創新育成中心

友邁科技

協理

黃國聰

hu慮g䁯l敭慰.捯m

2001/9/21

Prof. Huei
-
Wen Ferng

28

Thin Client vs.
Thick Client


Thick

Thin

Thick

Thin

Server

Client

Client

Server

Display

Render

Display

Element

Generator

Server

Client

Display

Render

Display

Element

Generator

Client

Server

Display

Render

Display

Element

Generator

Client

Server

2001/9/21

Prof. Huei
-
Wen Ferng

29

Wireless

Mobile Location Service

CRM, ERP, B2B, B2C

Decision Support Services

Data

Open Standard

Location Specific

Any Devices

Traditional GIS≠Wireless
Location Service

Wired

Desktop Mapping

AM/FM,CAD

Business Systems

Map

HTML

Location Independent

PC

From

To

We need a whole new spatial technology in wireless world.


Traditional GIS
Mobile Location Service
2001/9/21

Prof. Huei
-
Wen Ferng

30

Neighbor

Cell #1

Neighbor

Cell #2

Serving

Cell

LMU

LMU

LMU

Location

Calculation

& Control

Wireless
Gateway

Web Server

(Translator)

Client

HTML, cHTML,

HDML, WML,

vXML, XML…etc.

Wireless Portal Service Platform

Other
ICPs

User ID, Device Pattern,

XY, Request,…

XML protocol



Location
-
based Service Apps

SQL query enabled

OleMap Spatial

DataBase

Spatial DataBase enabled

Java APIs

DB Server

App

Interface

Location Engine


Java LBS Engine

EJB Container

(WebLogic)

Non
-
LBS Apps

By ICPs

Subscriber

Preference

LBS Apps

Billing

Billing

Corporat
e

Apps

Log File

System

Setting

LBS Architecture

Location

Capable

Handset

2001/9/21

Prof. Huei
-
Wen Ferng

31

Drives Increased Traffic

Revenue Share

Revenue

Source: Telecompetition Inc., Feb 2001

Traditional Voice
-
Only Scenario

User

Mobile

Operator

User Billed by Mobile Operator

2001/9/21

Prof. Huei
-
Wen Ferng

32

Source: Telecompetition Inc., Feb 2001

New Revenue Streams
Through Partnering

Drives Increased Traffic

Revenue Share

Revenue

User

Mobile

Operator

User Billed by Mobile Operator

Advertisers

W
-
ASPs

Content Providers

And Aggregators

Mobile Network

Mobile Portal

New Revenue Streams to the operator:



Subscription



Advertising



Transactions(% of M
-
Commerce sales)



Premium priced airtime

2001/9/21

Prof. Huei
-
Wen Ferng

33

MVNOs (Mobile Virtual Network Operators)

Service Providers: ISPs
and MVNOs

Source: Telecompetition Inc., Feb 2001



Drives Increased Traffic

Revenue Share

Revenue

User

Mobile

Operator

User Billed by ISP or MVNO

W
-
ASPs

Content Providers

And Aggregators

Mobile Network

Mobile Portal

ISPs and

MVNOs

2001/9/21

Prof. Huei
-
Wen Ferng

34

M
-
Commerce Adds
Complexity

Drives Increased Traffic

Revenue Share

Revenue

User

Mobile

Operator

User Billed by Mobile Portal

Advertisers

W
-
ASPs

Content Providers

And Aggregators

Mobile Network

Mobile Portal

User

W
-
ASPs

Content Providers

And Aggregators

ISPs and

MVNOs

Advertisers

User Could be Billed by Content Provider

Source: Telecompetition Inc., Feb 2001

2001/9/21

Prof. Huei
-
Wen Ferng

35

What is LBS Platform ?



LBS platform is a spatial information computing


environment that developers can use of APIs


that it provides to deploy LBS applications.



The developers need not to know too much


about spatial computing and spatial data and


database.

2001/9/21

Prof. Huei
-
Wen Ferng

36

Need to Support All
Devices


2001/9/21

Prof. Huei
-
Wen Ferng

37





Need to Support
Various Apps

2001/9/21

Prof. Huei
-
Wen Ferng

38

Wired vs. Wireless
Technology

Source: Mobilocity 2000

2001/9/21

Prof. Huei
-
Wen Ferng

39

Web Server

(XML translator)

Web Server

(XML translator)

SQL query enabled

Mark

-

up Language

Spatial

DataBase

enabled

DB Server

App Interface

Client

Location Engine

Java LBS Engine

EJB Container

(WebLogic

)

XML protocol enabled

HTML,

cHTML

, HDML,

WML,

vXML

, XML


etc.

J2EE

Vector

Map

Raster

Map

Satellite

Map

Route

Map

Corporate

Data

Spatial Data

User

Preference

Log

File

Billing

Record

Device

Pattern

Java
enabled

Java LBS APIs

Location

Search

Traffic

Router

Direction

Router

Address

Locator

P.O.I.

Finder

Other

APIs

XY

Resolver

Java Map

Producer

Java LBS Applications

XML protocol enabled

App

Server

APP

APP

APP

APP

APP

APP

APP

Other

APP

XML

Java

OleSpot
TM
Service Concept

2001/9/21

Prof. Huei
-
Wen Ferng

40

Characters of OleSpot
TM


Pure Java development


Cross
-
platform solution


Following J2EE architecture


Scalable, robust, flexible


Interoperability


XML open standard parser

2001/9/21

Prof. Huei
-
Wen Ferng

41

OleSpot
TM

Sample APIs


P.O.I. finder


Java map producer


Geocoding


XY resolve


Driving direction


Mass transportation
routing


Reasonable
restaurant


Buffering analysis


Coordinate
transforming


Address locator


Location Search



There are

more than 43 APIs on OleSpot now.


It will add if in need.


2001/9/21

Prof. Huei
-
Wen Ferng

42

Ole
-
Menu

Riches Mobile Life


Developer or programer can easily to deploy LBS apps
from XML APIs that OleSpot released


OleSpot provides more than 20 LBS practical and
useful apps in the first stage


Ole
-
Menu


We are seeking partners to deploy more and more LBS
applications


Examples: see next page

2001/9/21

Prof. Huei
-
Wen Ferng

43

快遞物流業車隊安全維護、監控
與導航

人員行程掌控與工作派遣

外業人員行動監控、搜尋或導航

公車車班時程與間距查詢系統

Source:
YesMobile

2001

Services for Enterprise

2001/9/21

Prof. Huei
-
Wen Ferng

44

Sample Applications


Driving direction


Mass transportation routing


Rental information


Reasonable restaurant


E
-
map on PDA

2001/9/21

Prof. Huei
-
Wen Ferng

45

Services for Consumers

項次
項目
內容
特點
1
「加油 e點靈」
讓行動商務的使用者可以透過手機、PDA、
並可結合友邁的大眾運輸搭乘
Pocket PC等手持式設備,或裝置在車上的設備,
指引及行車路徑指引
了解距離現在所處地點最近的加油站的方位
2
「Parking e點靈」
透過行動通訊快速資訊傳遞性的功能,開車或
愛車不幸被拖吊的開車及騎車
騎機車的消費族群,可以輕易在手機及PDA上
族亦可迅速知道愛車被拖吊置
知道附近的停車場
放的地點
3
「現金e點靈」
結合行動通訊個人化及移動性的功能,再加上
可以配合電子地圖,輕鬆的掌
銀行ATM自動櫃員機的位置資訊,自在運用掌
握附近提款機的地點
握自己現金的流通
4
「維修e點靈」
結合了行動通訊快速資訊傳遞性的功能,讓消
將預定行程的變化和意外損失
費者在面對愛車臨時發生狀況,能在最短的時
降到最低的程度
間知道修車場或輪胎店的位置
5
「娛樂e點靈」
結合行動通訊個人化及移動性的功能,再加上
重要地標及輕鬆靈活的使用者
娛樂生活相關資訊,消費者可以輕鬆掌握所在
界面,方便使用者輕易查詢
地附近指定範圍的娛樂生活及商店資訊
P.O.I. Finder
:「
e
點靈」系列

LBS Platform Levers The
Market


LBS

Market