What is wireless LAN in mobile computing?
A wireless LAN (WLAN) is a wireless computer network that links two or more devices using wireless communication to form a local area network (LAN) within a limited area such as a home, school, computer laboratory, campus, or office building.
What are the two types of wireless LAN?
Types of WLANS WLANs, as standardized by IEEE 802.11, operates in two basic modes, infrastructure, and ad hoc mode.
What is wireless LAN example?
Wi-Fi is an example of WLAN where devices are connected wirelessly within a limited range. WLAN is made within home, office building, computer laboratory, school building or any college campus. For using Wi-Fi, users need to enter a password for making a connection to the internet.
What are the different types of wireless LAN?
Types of WLAN Protocols
- 802.11a Protocol. Technology: This protocol employs Orthogonal Frequency Division Multiplexing (OFDM), which is a modulation scheme well suited for the office environment, since digital data can be transmitted wirelessly over multiple frequencies.
- 802.11b Protocol.
- 802.11g Protocol.
- 802.11n Protocol.
What are the characteristics of wireless LAN?
Wireless Local Area Network (WLAN) :
- WLAN includes an access point (AP) which is employed to attach to the web . AP sends and receives frequency signal to the connected devices.
- It works with a bandwidth of two . 4 GHz (802.11b) or 5 GHZ (802.11 a).
- WLAN gives a high data transfer rate.
What are the components of wireless LAN?
Wireless LAN Components
- User Devices. Users of wireless LANs operate a multitude of devices, such as PCs, laptops, and PDAs.
- Radio NICs. A major part of a wireless LAN includes a radio NIC that operates within the computer device and provides wireless connectivity.
- Access Points.
- Routers.
- Repeaters.
- Antennae.
What are the advantages of wireless LAN?
Wireless LAN Benefits
- Mobility. Mobility enables users to physically move while using an appliance, such as a handheld PC or data collector.
- Installation in Difficult-to-Wire Areas.
- Increased Reliability.
- Reduced Installation Time.
- Long-Term Cost Savings.
What are advantages of wireless LAN?
Why do we need wireless LAN?
The most obvious advantage of a WLAN is that devices can connect wirelessly, eliminating the need for cables. This allows homes and businesses to create local networks without wiring the building with Ethernet. It also provides a way for small devices, such as smartphones and tablets, to connect to the network.
What are the advantages of WLAN?
How does a wireless LAN work?
WLANs use radio, infrared and microwave transmission to transmit data from one point to another without cables. Therefore WLAN offers way to build a Local Area Network without cables. This WLAN can then be attached to an allready existing larger network, the internet for example.
What are the three applications of wireless LANs?
The following describes some of the applications that are made possible through the power and flexibility of wireless LAN technology.
- Healthcare.
- Conducting everyday business.
- Network managers in older buildings.
- Network managers in dynamic environments.
What are the benefits of wireless LAN?
What is wireless LAN discuss its advantages and disadvantages?
Comparison Table for Advantages and Disadvantages of Wireless Network
| Advantages | Disadvantages |
|---|---|
| The wireless network does not require any cable or wires, and hence communication is possible even when the user is moving. | The range of a wireless network is minimal, and it causes problems for many users. |
What are the applications of mobile computing and wireless networks?
The applications of mobile computing and wireless net- works include e-commerce, personal communications, telecommunications, monitoring remote or dangerous environments, national defense (monitoring troop movements), emergency and disaster operations, remote operations of appliances, and wireless Internet access.
What is a mobile and Wireless Networking Handbook?
This handbook can be used as a textbook and a reference for use by students, researchers, and developers. xvii fxviii PREFACE MOBILE AND WIRELESS NETWORKING ISSUES Mobile users do not necessarily use wireless interfaces. Instead, they can simply connect to fixed networks with a wired interface while away from their home or office.
What are the best books on wireless and mobile network architecture?
Y.-B. Lin and I. Chlamtac, Wireless and Mobile Network Architectures, New York: Wiley, 2001. 21. B. Liang and Z. J. Haas, Predictive Distance-Based Mobility Management for PCS Networks, INFOCOM, New York, 1999. 22.
What are the protocols and platforms for mobile computing?
Protocols and Platforms for Mobile Computing: WAP, Bluetooth, XML, J2ME, JavaCard, PalmOS, Windows CE, Symbian OS, Linux for Mobile Devices. 243 Mobile Ad hoc NETworks (MANETs) • Mobile Ad hoc Networks (MANETs) are wireless networks which are characterized by dynamic topologies and no fixed infrastructure.