Widyatama Lecture Applied Networking.IV Week02

Applied Networking-IV (2231114)
Lecture Week-2
Mobile Networking Part-2

Lecture by: Djadja.Sardjana, S.T., M.M.
by: Djadja.Sardjana,
www.slideshare.net/djadja
2-Feb-10
Feb- Widyatama University-Informatics
University- 1

Mobile Device

Mobile
Monkey
1m00

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Mobile devices
Pager PDA Laptop/Notebook
• receive only • graphical displays • fully functional
• tiny displays • character recognition • standard applications
• simple text • simplified WWW
messages

Sensors,
embedded
controllers

Mobile phones Palmtop
• voice, data • tiny keyboard
• simple graphical displays • simple versions
of standard applications
www.scatterweb.net

performance

Widyatama University-
University-
Informatics 2-Feb-10
Feb- 3

Mobile Device Environment

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Mobile Ecosystem
Network
Mobile Operator
/PAN/WAN

Platform Channels
OS, Silicon Distributors

Integration
Devices Services
OEM/ODM
SI, SP

Solutions
ISV / IHV

Mobile Device Ecosystem
Smart
Devices with an Open
Platform

Mobile
Operator

Increased Access to New
Profitability Business Partners
Ecosystem
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Mobile Computing Devices

personal digital assistant (PDA)
A handheld computer principally used for
personal information management
smartphone
Internet-
Internet-enabled cell phone that can support
mobile applications
Blackberry
A handheld device principally used for e-mail
e-

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Effects of device portability
Power consumption
limited computing power, low quality displays, small disks due to
limited battery capacity
CPU: power consumption ~ CV2f
• C: internal capacity, reduced by integration
• V: supply voltage, can be reduced to a certain limit
• f: clock frequency, can be reduced temporally
Loss of data
higher probability, has to be included in advance into the design
(e.g., defects, theft)
Limited user interfaces
compromise between size of fingers and portability
integration of character/voice recognition, abstract symbols
Limited memory
limited value of mass memories with moving parts
flash-
flash-memory or ? as alternative

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Mobile Device Growth

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Mobile Device Strategy

Smart Device Focus
Familiar Applicationx
Standards Based, Rich APIs Pocket PC

Best Wireless Platform
Extensible & Flexible

Smartphone
PDA
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Mobile Data Opportunity

Redefines the PC and mobile experiences

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Mobile Device Subscribers

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Handset for Mobile Video

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Handset with Wi-Fi
Wi-

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Mobile Device Mobile
Evolution
3m06

Evolution
Moore’s Law is in effect

Consumer demand is driving
innovation

Current mobile device
ecosystem is generating
more opportunities –
enhancing value and
productivity

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Maturity of Mobile Apps/Services
Mobile Data: From gimmick to lifestyle changing…
3rd Party Innovation requires an “Open” mentality
Operator must be positioned to meet customer needs

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Trends: devices
• End user wants the my-service-anywhere experience
• New intelligent & powerful device classes already start to support this goal
DATA CENTRIC

Fixed Mobile Convergence
driven by disruptive wireless
access technologies

Voice/Data Voice/Data
Convergence and CTI
by leveraging Internet as
Upcoming Convergence with multimode
Platform Device Classes broadband mobile access
VOICE CENTRIC

Fixed Mobile Convergence
driven by operators service
offering innovations

low mobility requirements high
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Converged Devices

PCs DATA Mobile
TVs PDAs

Upcoming
FIXED Device MOBILE • End user wants
Classes the my-service-
anywhere
experience
• New intelligent &
powerful device
Fixed Mobile
Phones Phones classes already
start to support
VOICE
this goal

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Mobile Operating Systems

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Operating Systems Background
Operating System (OS)
Process Management
Memory Management
File Management
I/O Management
Networking
Protection System
User Interface

Real Time Operating System (RTOS)
Characterized by timing constraints

Mobile Operating System (Mobile OS)
RTOS running on a mobile device

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Mobile operating system
The main software to manage and control
hardware and software directly.
Responsible for operating the various functions
and features available in mobile devices.
Besides functioning to control the hardware
resources and software, operating system also
controls so all applications can run stable and
consistent.
Another advantage of the mobile phone OS is to
have more freedom to download additional
applications that are not provided by the phone
vendors.
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Mobile operating system type

Symbian operating system
Windows Mobile
Palm operating system
Mobile Linux
Blackberry operating system

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Introduction to Symbian OS
Evolution of Symbian OS
1997 - 32 bit EPOC Platform (Psion Software Inc) – Psion Series 5 PDA
1998 – Symbian – A spin-off from Psion Software Inc.
spin-
Co-owned by Psion, Nokia, Eriksson, Motorola
Co-
The motive behind this spin-off was to develop an advanced software
spin-
platform for a new combination of consumer products called
Smartphone which would combine telephony and computing capability
1999 – EPOC named as Symbian OS
Co-owned by Psion, Nokia, Sony-Eriksson, Motorola, Matsushita
Co- Sony-
(Panasonic), Samsung and Siemens.

Symbian OS
Hard RTOS based on layered/micro-kernel architecture
layered/micro-
StrongARM architecture (ARM9 running over 100 MHZ)
Program storage (flash memory) ; OS storage flash ROM

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Symbian OS
Micro-
Micro-kernel uses client/server session based
IPC
Servers mediate access to shared resources
and services
Kernel deals with memory allocation and IPCs
Proactive defense mechanism
Platform Security Architecture
OS Services
Data Caging

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Symbian OS Architecture

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Architectural Overview
Core
Kernel, file server, memory management and device
drivers
System Layer
Communication and computing services e.g. TCP/IP,
IMAP4, SMS and database management
Application Engines
User Interface Software
Applications
All layers communicate with each other using
Client/Server Mechanism

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J2ME on Symbian
Symbian – A mobile operating system
J2ME – A non-native programming language
non-

Symbian OS

Hardware

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Win Mobile OS
Win Mobile 5.0 is a hard
RTOS
Base OS functionality is
provided by kernel which
includes process, thread,
memory and file
management
Kernel acts as a conduit for
the rest of the core OS
Win Mobile kernel uses a
paged virtual-memory system
virtual-
to manage and allocate
program memory.
The kernel also allocates
memory to the stack for each
new process or thread.

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Memory Architecture
Windows Mobile 5.0 :
RAM is used exclusively for running
programs.
Flash memory is used for storage of
programs and data.
Result: extended battery life but slower
performance

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Mobile Linux
The first Linux mobile phone launched by
Motorola in February 2003.
Motorola A760 series are using OS combination
of the Linux kernel software that is distributed
by Silicon Valley-based Monta Vista and other
Valley-
software from the Java programming language,
Sun Microsystems.
Linux-
Linux-based operating system developed by
Google is Android.

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Mobile Linux
Advantage & Dis-advantage
Dis-
The advantages is that Linux as an ideal OS for
mobile phones because of support by large
companies such as IBM, Oracle, and Intel. In
addition, this system value is more flexible and
offers a smaller memory and can be more
conserved.
The disadvantage is the additional application
has not been avalaible and Linux systems built
to operate with great power, so battery resource
management is still less effective than other
OSes.
OSes.
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BlackBerry operating system
Telecommunications companies from Canada,
Reserch in Motion (RIM), to develop mobile
communications devices. Initially they are
producing products and services pager for both
directions.
This company developed a new breakthrough
by creating the famous Blackberry push-email
push-
service, and now turned into a Smartphone
which has various functions such as, GPS,
mobile internet, and can access Wi-FI.
Wi-

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Palm operating system
Example is Palm Treo 680 Smartphone uses
the Palm operating system, which is Palm OS
5.4.9 with the Intel PXA270 processor, 312MHz.
Some of the features offered is Pocket Express,
Microsoft Media Player, Palm files, PDF viewer,
Adobe Acrobat reader, eReader, Pocket Tunes,
eReader,
and Document To Go.

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Comparative Review on
Symbian & Win Mobile
OS Design and Architecture
Symbian:
Symbian: ARM processors running 100-200 MHz
100-
Win Mobile: ARM and Intel processors running 200-400 MHz
200-
Memory Management
Symbian:
Symbian: OS kernel runs in privileged mode, with each app has its own
address space
Win Mobile: Shared RAM and flash ROM, use eXecute In Place (XIP)
scheme
File System
Symbian:
Symbian: TCB contains file system
Win Mobile: Hierarchical file system accessible through kernel functions
Development
Symbian:
Symbian: Symbian specific frameworks/libraries
Win Mobile: Windows API
Security
Symbian:
Symbian: Fairly well designed
Win Mobile: Lack of process’s address space protection
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Conclusion & Final Words

Mobile Mobile
Future Case
2m30
Study

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How should technology Which distinctive
and innovation be technological
organized and competences and
managed? capabilities are
1 necessary?

6
Which

When, how and
Questions technologies
should be
where should new
technology be Technology 2 used to
implement
introduced to the product and
market?
Strategy Should service?

5 Answer 3

Should technologies
be sourced internally 4 What should be the
or externally?
level and timing of
investment in
Source: Burgelman, Strategic Management of Technology and Innovation technology
2-Feb-10
University- development? 36

End – End Experience is Critical
Improving customer experience – ensuring choice and
innovation at affordable price points

A fair playing field will focus service providers on meeting
consumers’ growing needs

2-Feb-10
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Widyatama Lecture Applied Networking.IV Week02

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