Computer Science
Wireless Networking
Wireless networking refers to the technology that allows devices to connect and communicate without the use of physical wired connections. It enables data transmission through radio waves, providing flexibility and mobility for users. Wireless networking is widely used in various applications, including Wi-Fi for internet access, Bluetooth for short-range communication, and cellular networks for mobile devices.
Written by Perlego with AI-assistance
Related key terms
1 of 5
7 Key excerpts on "Wireless Networking"
- S. Kannadhasan, R. Nagarajan, Kaushik Pal, S. Kannadhasan, R. Nagarajan, Kaushik Pal(Authors)
- 2009(Publication Date)
- Bentham Science Publishers(Publisher)
Software Defined Networking Concepts, Applications and Wireless CommunicationS. Abarna,1 , *M. Krishna Kumar1,Kanagaraj Venusamy21 Grace College of Engineering, Mullakkadu, Tuticorin, India2 Department of Engineering, University of Technology and Applied Sciences-AI Mussanah, AI Muladdha, Sultanate of OmanAbstract
This chapter has covered the most popular protocols, including those for Bluetooth, Wi-Fi, WiMAX, and cellular networks. There is a rundown of what is needed to set up a basic wireless network. The literature seeks to describe the most extensively used wireless protocols and technologies. After that, an overview is presented of the advantages of wireless networks over wired systems. In addition, the chapter highlights some of the most serious security vulnerabilities that wireless networks face. There are a variety of approaches that may be employed to reduce these risks and safeguard the network's privacy and security. A thorough examination of the potential applications of wireless networks in education and training is also provided, along with proof that the improvements and affordability of wireless technology have helped the education sector.Keywords: Network, AI, Data mining and Applications, IoT.* Corresponding author S. Abarna: Grace College of Engineering, Mullakkadu, Tuticorin, India; E-mail: [email protected]INTRODUCTION
The introduction of the computer and subsequent development of communication networks may be regarded as the most significant accomplishment of the twenty-first century. This breakthrough has changed the way individuals interact and process information. The network capabilities of computer systems have been used by the government, corporations, and people, and they have all enjoyed considerable advantages. The two most popular types of networks are fixed connections (which employ wires) and wireless networks (which use waves to transmit data). The massive communication network's backbone is fixed connections, which mostly employ fibre optics and Ethernet. Wireless networks, on the other hand, have become more popular in recent years. Wireless networks were limited due to the high cost of wireless equipment, such as integrated routers
eBook - PDF- Michael Gallo, William M. Hancock PhD CISSP CISM, William M. Hancock, PhD, CISSP, CISM(Authors)
- 2001(Publication Date)
- Digital Press(Publisher)
Chapter 18 Wireless Networking The subject of wireless communications was discussed in several earlier chapters. For example, in Chapter 4, we presented information about the two wireless transmission methods: radio frequencies and infrared. We also discussed in Chapter 4, satellite com-munication systems, including two high profile projects, Iridium and Globalstar, as well as the various orbits in which satellites can be placed. In Chapters 4 and 15, we discussed wireless LANs (WLANs), including HomeRF and the various IEEE 802.11 standards. Finally, in Chapter 17, we introduced Bluetooth, a short-range wireless technology that enables any Bluetooth-enabled device to communicate with each other via radio links. In this chapter, we extend our discussion of wireless concepts and present more detailed information about various wireless communication systems. If you haven’t done so already, we encourage you to review the aforementioned chapters prior to reading this chapter. An outline of the major topics we discuss follows: • Wireless Communications Overview and History (Questions 1–2) • Wireless Data Transmission Methods (Questions 3–7) • Cellular Telephone Networks (Questions 8–19) • Paging Networks (Questions 20–24) • Wireless Data Networks (Questions 25–32) • Bluetooth Concepts vs. Wireless LANs (Questions 33–36) • Advantages and Disadvantages of Wireless Communications (Question 37) • The Future of Wireless Communications (Question 38) 1. What is Wireless Networking? Wireless Networking, or more generally, wireless communications , refers to the trans-mission of signals through a wireless medium such as air or space instead of through a physical cable. Wireless communications signals are transmitted and received via antennae (which is the plural of antenna). More specifically, a transmitting antenna radiates electro-magnetic waves into the air and a receiving antenna collects these waves from the air. 537
eBook - ePub- Darril Gibson(Author)
- 2011(Publication Date)
- Sybex(Publisher)
Chapter 12 Understanding Wireless NetworkingWireless networks allow you to create a network without running cables. You can also expand an existing wired network by adding a wireless access point as a bridge for wireless clients to your wired network. Two important pieces of knowledge you’ll need are an understanding of current Wireless Networking standards and an understanding of wireless security methods.IEEE 802.11 includes several different wireless standards, including 802.11a, b, g, and n. To get the most out of your wireless network, you need to use compatible protocols. Some work together, but others don’t. IEEE 802.11n provides the greatest flexibility and speeds.Wireless security had a rocky start, and early wireless security methods weren’t secure at all. However, wireless security has increased significantly over the years, and it is possible to create a more secure wireless network today. You just need to know how.When you have networks in buildings separated by long distances, you can use point-to-point wireless bridges to connect them, even if the buildings are miles away.- Exploring basic wireless components
- Comparing networking standards and characteristics
- Comparing network security methods
- Using wireless networks
- Understanding point-to-point wireless
Wireless Networking is virtually everywhere today: homes, airports, restaurants, and hotels. Even some cities offer citywide wireless Internet access. With newer technologies, we are seeing wireless speeds near that of gigabit.Before digging in to the details of wireless standards and security methods, it’s important to understand some of the basics of wireless networks. This section covers these topics:- Using wireless access points and adapters
- Naming the wireless network
- Comparing CMSA/CD and CSMA/CA
A wireless access point (WAP)
eBook - PDF- David Madsen, David Madsen(Authors)
- 2016(Publication Date)
- Cengage Learning EMEA(Publisher)
If you purchase a device for a specific carrier to work on its 3G or 4G network, for example, you might not be able to use that smartphone if you switch your service to another network carrier because your device might operate on a different frequency. Consumers must be careful to select a wireless device that will pick up a signal where they want to use it. Cellular was the first industry to create wireless connections that served large geographical areas. Soon after the creation of cellular networks, engineers developed other ways to create wireless networks with different types of devices. Generally, you can classify Wireless Networking into three categories: wireless local area networking, wireless personal area networking, and wireless wide area networking. It is important to understand each type of network and the technologies used on it so you can determine the correct hardware devices needed. You will investigate the different wireless networks and devices next. Wireless Local Area Networking A wireless local area network (wireless LAN) is a network on which devices use high-frequency radio waves instead of wires or cables to communicate with a base station, which is connected to the Internet. When most people talk about wireless LANs, they are usually referring to the most common type of wireless network, which is created using the Wi-Fi standard. New computers and all kinds of devices are equipped with Wi-Fi , which is the trademarked name of the Wi-Fi Alliance ( www.wi-fi.org ) that specifies the interface between a wireless client and a base station, or between two wireless clients, to create a hotspot , or an area of network coverage. The Wi-Fi Alliance is a not-for-profit organization that certifies interoperability of Wi-Fi products and promotes Wi-Fi as a standard for wireless LANs. Wi-Fi is frequently found in restaurants, stores, and other places where people use wireless devices to access the Internet.
eBook - PDF- Jorge Olenewa(Author)
- 2016(Publication Date)
- Cengage Learning EMEA(Publisher)
chapter 5 Wireless Personal Area Networks After reading this chapter and completing the exercises, you will be able to: • Describe a wireless personal area network (WPAN) • List the IEEE 802.15 WPAN standards and their applications • Explain how Bluetooth and ZigBee RF WPANs work • Describe some of the security features and threats in WPAN technologies 151 Copyright 2017 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-300 For many years, there were few options for connecting and synchronizing your smartphone with your laptop or desktop computer without carrying around a collection of cables that matched each of the devices used. Each new type of device usually required con-sumers to use a different type of cable. Controlling lights, security systems, heating, and cooling was limited to the existing wiring in the home, and could only be done from inside the house, even with some innovative systems that allowed control from a central location within the house. One of the first wireless technologies that appeared on the market used infrared light (IR). Although infrared interfaces had been available for quite a long time in TV remotes, IR ’ s original maximum speed of 115,200 bps limited the ability of a person to use it for transfer-ring large amounts of data to or from wireless devices. The IR specification was later enhanced, and speeds of 4 Mbps and even up to 16 Mbps were reached — comparable to Fast Ethernet at the time. Despite being secure and extremely easy to use, however, IR required close-range, point-to-point connectivity, and the lack of mobility eventually forced manufacturers to abandon an interface technology that had dominated the world of porta-ble devices for a few decades. Since the late 1990s, many alternative technologies have appeared on the market, with the primary goal of eliminating cables and allowing data devices and peripherals to communi-cate without wires.
eBook - PDF- Jill West(Author)
- 2021(Publication Date)
- Cengage Learning EMEA(Publisher)
This module explores how to set up, manage, secure, and troubleshoot local wireless networks that you might find in an enterprise setting or that you might set up in your own home. CHARACTERISTICS OF WIRELESS TRANSMISSIONS 1.2 Explain the characteristics of network topologies and network types. 2.1 Compare and contrast various devices, their features, and their appropriate placement on the network. 2.4 Given a scenario, install and configure the appropriate wireless standards and technologies. 5.4 Given a scenario, troubleshoot common wireless connectivity issues. Average reading time: 30 minutes CERTIFICATION ✔ 6 Presentation 7 Application 5 Session 4 Transport 3 Network 2 Data Link 1 Physical Table 6-1 Frequency ranges of wireless technologies listed from low to high frequencies Technologies Frequency range (band) in kHz, MHz, or GHz Description RFID 125 kHz–134.2 kHz The lowest of several frequency ranges for RFID and approved for global use NFC 13.56 MHz Fixed frequency Z-Wave 90.842 MHz Fixed frequency In previous modules, you learned about signals that travel over a physical medium, such as a cop- per or fiber-optic cable. LANs that transmit signals through the air via RF (radio frequency) waves are known as WLANs (wireless local area networks). Wireless transmission media is now common in business and home networks and necessary in some specialized network environments such as IoT (Internet of Things). Wired and wireless signals share many similarities, including use of the same layer 3 and higher protocols, for example. However, the nature of the atmosphere makes wireless transmission vastly different from wired transmission at lower OSI layers. You’ll start by looking at what wireless signals are, and then you’ll study how they’re transmitted. The Wireless Spectrum All wireless signals are carried through the air by electromagnetic waves.
eBook - PDF- Jill West, Tamara Dean, Jean Andrews, , Jill West, Tamara Dean, Jean Andrews(Authors)
- 2018(Publication Date)
- Cengage Learning EMEA(Publisher)
• On every type of network, many variables must be accurately set on clients, servers, and connectivity devices in order for com- munication to succeed. Wireless networks add a few more variables. Key Terms For definitions of key terms, see the Glossary near the end of the book. 802.11a 802.11ac 802.11b 802.11g 802.11n ad hoc ANT1 AP (access point) association authentication band beacon frame Bluetooth brute force attack BSS (basic service set) BSSID (basic service set identifier) captive portal CAPWAP (Control and Pro- visioning of Wireless Access Points) channel bonding CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) data frame diffraction DSSS (direct sequence spread spectrum) encryption ESS (extended service set) ESSID (extended service set identifier) evil twin fading FHSS (frequency hopping spread spectrum) frequency hopping guest network infrastructure interference IoT (Internet of Things) IR (infrared) iwconfig LLC sublayer LOS (line of sight) LWAPP (Lightweight Access Point Protocol) MAC filtering MAC sublayer mesh MIMO (multiple input- multiple output) MU-MIMO (multiuser MIMO) NFC (near-field communication) off-boarding omnidirectional antenna on-boarding paired probe propagation radiation pattern range reassociation reflection refraction remote wipe RFID (Radio Frequency Identification) rogue access point RTS/CTS (Request to Send/ Clear to Send) scanning scattering site survey SNR (signal-to-noise ratio) spectrum analyzer SSID (service set identifier) unidirectional antenna war driving WEP (Wired Equivalent Privacy) Wi-Fi Copyright 2019 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience.
Index pages curate the most relevant extracts from our library of academic textbooks. They’ve been created using an in-house natural language model (NLM), each adding context and meaning to key research topics.
