1. The document discusses the architecture of mobile computing and communication. It describes the characteristics of mobile devices as either fixed or mobile and wired or wireless.
2. Key features of mobile communication networks are discussed, including load balancing, scalability, network management, access control, and device management. Applications of mobile communication include use in vehicles, emergencies, business, and location-based services.
3. Advantages of mobile communication are flexibility, cost-effectiveness, speed, and constant connectivity. The document also provides a simplified reference model of mobile communication including the physical, data link, network, transport, and application layers.
Security Concern Related to Mobile Computing, Middleware and Gateway required for mobile Computing, Making Existing Application Mobile Enable , mobile technology
Introduction to Mobile Computing Concept of Mobile Communication, Different generations of wireless technology, Basics of cell, cluster and frequency reuse concept, Noise and its effects on mobile, Understanding GSM and CDMA, Basics of GSM architecture and services like voice call, SMS, MMS, LBS, VAS, Different modes used for Mobile Communication, Architecture of Mobile Computing(3 tier)
Unit 2 Design mobile computing architecture MC1514Swapnali Pawar
Design mobile computing architecture: Characteristics of Mobile Communication, Application of Mobile Communication, Security Concern Related to Mobile Computing, Middleware and Gateway required for mobile Computing, Making Existing Application Mobile Enable, Mobile IP, Basic Mobile Computing Protocol, Mobile Communication via Satellite • Low orbit satellite • Medium orbit satellite • Geo stationary satellite Satellite phones.
Gives an insight into the transition of mobile technology and the manner in which the technology has evolved. Highlights the transition from 2G to 3G to 4G to 5G. Looks into the points of difference between the generations. Evolution of mobile handsets and advancement in speed.
Security Concern Related to Mobile Computing, Middleware and Gateway required for mobile Computing, Making Existing Application Mobile Enable , mobile technology
Introduction to Mobile Computing Concept of Mobile Communication, Different generations of wireless technology, Basics of cell, cluster and frequency reuse concept, Noise and its effects on mobile, Understanding GSM and CDMA, Basics of GSM architecture and services like voice call, SMS, MMS, LBS, VAS, Different modes used for Mobile Communication, Architecture of Mobile Computing(3 tier)
Unit 2 Design mobile computing architecture MC1514Swapnali Pawar
Design mobile computing architecture: Characteristics of Mobile Communication, Application of Mobile Communication, Security Concern Related to Mobile Computing, Middleware and Gateway required for mobile Computing, Making Existing Application Mobile Enable, Mobile IP, Basic Mobile Computing Protocol, Mobile Communication via Satellite • Low orbit satellite • Medium orbit satellite • Geo stationary satellite Satellite phones.
Gives an insight into the transition of mobile technology and the manner in which the technology has evolved. Highlights the transition from 2G to 3G to 4G to 5G. Looks into the points of difference between the generations. Evolution of mobile handsets and advancement in speed.
this presentation is mainly focusing on the current trends in moblie computing and what are the mobile computing devices its application in business ,advantages and disadvantages of moblie computing
this presentation is mainly focusing on the current trends in moblie computing and what are the mobile computing devices its application in business ,advantages and disadvantages of moblie computing
Interference Revelation in Mobile Ad-hoc Networks and Confrontationirjes
In this paper, we utilize the Several interference revelation techniques proposed for mobile ad hoc
networks rely on each node passively monitoring the data forwarding by its next hop. This paper presents
quantitative evaluations of false positives and their impact on monitoring based interference revelation for ad
hoc networks. Experimental results show that, even for a simple three-node configuration, an actual ad-hoc
network suffers from high false positives; these results are validated by Markov and probabilistic models.
However, this false positive problem cannot be observed by simulating the same network using popular ad hoc
network simulators, such as ns-2, OPNET or Glomosim. To remedy this, a probabilistic noise generator model
is implemented in the Glomosim simulator. With this revised noise model, the simulated network exhibits the
aggregate false positive behavior similar to that of the experimental tested. Simulations of larger (50-node) ad
hoc networks indicate that monitoring-based interference revelation has very high false positives. These false
positives can reduce the network performance or increase the overhead. In a simple monitoring-based system
where no secondary and more accurate methods are used, the false positives impact the network performance in
two ways: reduced throughput in normal networks without attackers and inability to mitigate the effect of
attacks in networks with attackers.
A network switch is a networking tool that joins computers on a network so they may communicate with one another. It is in charge of forwarding data packets across network devices and works at the OSI model’s data link layer.
A network switch regulates the flow of data traffic on a network in a manner similar to that of a traffic controller. It accepts data packets from various connected devices and sends them to the right place. This enables simultaneous communication between several devices without interfering with one another’s conversations.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Unit - I
Mobile Computing – Mobile Computing Vs wireless Networking – Mobile Computing Applications – Characteristics of Mobile computing – Structure of Mobile Computing Application. MAC Protocols – Wireless MAC Issues – Fixed Assignment Schemes – Random Assignment Schemes – Reservation Based Schemes.
A simulation and analysis of secured aodv protocol in mobile ad hoc networkseSAT Journals
Abstract A Mobile ad hoc Network is a wireless network, which is dynamic in nature, that can be simulated by infra structure less connections in which every node itself can act as a router. There are many significant routing protocols proposed for providing significant benefits in terms of performance, reliability, security and many other issues also have been addressed. An efficient way of evaluating the performance of MANETS is to simulate them. Of the many simulators available, Ns-2 has gained increasing popularity because of its many efficient features. The main aim of this simulator is to provide better networking environment for research and educational purposes. In this paper, we try to propose a new routing protocol and tried to implement it on NS-2 . We also tried to compare the results with other protocols. Keywords: MANET, AODV, Network Simulator, DSR
Intelligent location tracking scheme for handling user’s mobilityeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Comparison of Routing protocols in Wireless Sensor Networks: A Detailed Surveytheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
The International Journal of Engineering & Science would take much care in making your article published without much delay with your kind cooperation
Basic concept of Computer networks and
distributed systems, Goals of networking, General approaches of communication
within a network, Network classification, Uses & Network Softwares.
UNIT I INTRODUCTION
Introduction to Mobile Computing – Applications of Mobile Computing- Generations of Mobile Communication Technologies- Multiplexing – Spread spectrum -MAC Protocols – SDMA- TDMA- FDMA- CDMA
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Noise & Its Effects on Mobile
Understanding GSM & CDMA
Basics of GSM Architecture
And services like voice call , SMS ,MMS ,LBS,VAS
Different Modes used for Mobile Communication
Architecture of Mobile Computing(3 Tier)
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2. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
Index
• Mobile Communication
• Characteristics of Mobile Communication
Device
• Features of Mobile Communication
• Applications of Mobile Communication
• Advantages of Mobile Communication
• A simplified reference model
3. Mobile Communication
Mobile Communication is the use of technology that
allows us to communicate with others in different
locations without the use of any physical connection
(wires or cables). Mobile communication makes our
life easier, and it saves time and effort.
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
4. Characteristics of Mobile Communication
Device
● Fixed and wired:
This configuration describes the typical desktop computer in an office. Neither weight
nor power consumption of the devices allow for mobile usage. The devices use fixed
networks for performance reasons.
● Mobile and wired:
Many of today’s laptops fall into this category; users carry the laptop from one hotel
to the next, reconnecting to the company’s network via the telephone network and a
modem.
● Fixed and wireless:
This mode is used for installing networks, e.g., in historical buildings to avoid damage
by installing wires, or at trade shows to ensure fast network setup. Another example is
bridging the last mile to a customer by a new operator that has no wired
infrastructure and does not want to lease lines from a competitor.
● Mobile and wireless:
This is the most interesting case. No cable restricts the user, who can roam between
different wireless networks. Today’s most successful example for this category is GSM
with more than 800 million users.
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
5. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
1. High capacity load balancing:
Each wired or wireless infrastructure must incorporate high
capacity load balancing.High capacity load balancing means,
when one access point is overloaded, the system will actively
shift users from one access point to another depending on the
capacity which is available.
Features of Mobile Communication
6. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
2.Scalability
The growth in popularity of new wireless devices continuously increasing
day by day. The wireless networks have the ability to start small if
necessary, but expand in terms of coverage and capacity as needed -
without having to overhaul or build an entirely new network.
7. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
3. Network management system:
Now a day, wireless networks are much more complex and
may consist of hundreds or even thousands of access
points, firewalls, switches, managed power and various
other components.The wireless networks have a smarter
way of managing the entire network from a centralized
point.
8. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
4. Role based access control
Role based access control (RBAC) allows you to assign roles based on what, who,
where, when and how a user or device is trying to access your network.
Once the end user or role of the devices is defined, access control policies or rules
can be enforced.
•Indoor as well as outdoor coverage options:
It is important that your wireless system has the capability of adding indoor
coverage as well as outdoor coverage.
•Network access control:
Network access control can also be called as mobile device registration. It is
essential to have a secure registration.
Network access control (NAC) controls the role of the user and enforces policies.
NAC can allow your users to register themselves to the network. It is a helpful
feature that enhances the user experience.
•Mobile device management:
Suppose, many mobile devices are accessing your wireless network; now think
about the thousands of applications are running on those mobile devices.
How do you plan on managing all of these devices and their applications,
especially as devices come and go from your business?
Mobile device management can provide control of how you will manage access
to programs and applications. Even you can remotely wipe the device if it is lost
or stolen.
9. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
• Roaming: You don't need to worry about dropped
connections, slower speeds or any disruption in service as
you move throughout your office or even from building to
building wireless needs to be mobile first.
Roaming allows your end-users to successfully move from
one access point to another without ever noticing a dip in a
performance.
For example: allowing a student to check their mail as they
walk from one class to the next.
• Redundancy: The level or amount of redundancy your
wireless system requires depends on your specific
environment and needs.
For example: A hospital environment will need a higher
level of redundancy than a coffee shop. However, at the
end of the day, they both need to have a backup plan in
place.
10. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
5.Proper Security means using the right firewall
The backbone of the system is your network firewall. With
the right firewall in place you will be able to:
• See and control both your applications and end users.
• Create the right balance between security and
performance.
• Reduce the complexity with:
Antivirus protection.
Deep Packet Inspection (DPI)
Application filtering
• Protect your network and end users against known and
unknown threads including:
Zero- day.
Encrypted malware.
Ransomware.
Malicious botnets.
11. MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
6.Switching:
Basically, a network switch is the traffic cop of your wireless
network which making sure that everyone and every device
gets to where they need to go.
Switching is an essential part of every fast, secure wireless
network for several reasons:
• It helps the traffic on your network flow more efficiently.
• It minimizes unnecessary traffic.
• It creates a better user experience by ensuring your
traffic is going to the right places.
12. Applications of Mobile Communication
1. Vehicles
2. Emergencies
3. Business
4. Replacement of wired networks
5. Infotainment and more
6. Location dependent services
7. Mobile and wireless devices
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
22. Advantages of Mobile Communication
Flexibility:
Wireless communication enables the people to communicate with each other regardless of
location. There is no need to be in an office or some telephone booth in order to pass and
receive messages.
Cost effectiveness:
In wireless communication, there is no need of any physical infrastructure (Wires or cables)
or maintenance practice. Hence, the cost is reduced.
Speed:
Improvements can also be seen in speed. The network connectivity or the accessibility was
much improved in accuracy and speed.
Accessibility:
With the help of wireless technology easy accessibility to the remote areas is possible. For
example, in rural areas, online education is now possible. Educators or students no longer
need to travel to far-flung areas to teach their lessons.
Constant connectivity:
Constant connectivity ensures that people can respond to emergencies relatively quickly.
For example, a wireless device like mobile can ensure you a constant connectivity though
you move from place to place or while you travel, whereas a wired landline can't.
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
23. A simplified reference model
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
24. ● Physical layer:
This is the lowest layer in a communication system and is responsible for the
conversion of a stream of bits into signals that can be transmitted on the sender
side. The physical layer of the receiver then transforms the signals back into a bit
stream. For wireless communication, the physical layer is responsible for
frequency selection, generation of the carrier frequency, signal detection
(although heavy interference may disturb the signal), modulation of data onto a
carrier frequency and (depending on the transmission scheme) encryption. These
features of the physical layer are mainly discussed in chapter 2, but will also be
mentioned for each system separately in the appropriate chapters.
● Data link layer:
The main tasks of this layer include accessing the medium, multiplexing of
different data streams, correction of transmission errors, and synchronization
(i.e., detection of a data frame). Chapter 3 discusses different medium access
schemes. A small section about the specific data link layer used in the presented
systems is combined in each respective chapter. Altogether, the data link layer is
responsible for a reliable point-topoint connection between two devices or a point-
to-multipoint connection between one sender and several receivers.
A simplified reference model
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar
25. ● Network layer:
This third layer is responsible for routing packets through a network or
establishing a connection between two entities over many other intermediate
systems. Important topics are addressing, routing, device location, and handover
between different networks. Chapter 8 presents several solutions for the network
layer protocol of the internet (the Internet Protocol IP). The other chapters also
contain sections about the network layer, as routing is necessary in most cases.
● Transport layer:
This layer is used in the reference model to establish an end-to-end connection.
Topics like quality of service, flow and congestion control are relevant, especially
if the transport protocols known from the Internet, TCP and UDP, are to be used
over a wireless link.
● Application layer:
Finally, the applications (complemented by additional layers that can support
applications) are situated on top of all transmissionoriented layers. Topics of
interest in this context are service location, support for multimedia applications,
adaptive applications that can handle the large variations in transmission
characteristics, and wireless access to the world wide web using a portable
device. Very demanding applications are video (high data rate) and interactive
gaming (low jitter, low latency).
MT Unit 2-Design Mobile Computing
Architecture ~Swapnali Pawar