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The objective of this project report is to check whether the wireless network is best choice for home user compare to the wired network, when deploying in Home. I have identified by comparing the difference between wireless network and wired network. The report contains the factors to be taken into consideration when deciding whether to obtain a wireless or wired network. The things which I have taken into consideration when comparing wireless or wired network are Deployment, Security, Reliability, Performance and Cost. In this report I presented the Results by Comparisons between wireless and wired network and the things to be considered by user when deciding to deploy a wireless network in home compare to wired network. The information I presented in this report will help the Home user to decide how best the Wireless or wired network satisfy their application requirements. My conclusion is that choosing a wired or wireless network depends on the user needs. If a home user need maximum performance and has low budget and do not care much about mobility, then a wired ethernet network is probably right for home user. If on the other hand, high cost is not an issue and users are really concerned about the task of wiring home with physical cable, then users should certainly consider a wireless network.
Keywords: Ethernet, Wireless, Wire.
A computernetworkis nothing but a connection of two or more computers by a wire (physical cable) or by a wireless connection to exchange information.
The two types of network that can be deployed in Home are Wireless network and traditional wired network (Ethernet).
For many years, people have been using Wired Ethernet networks to interconnect personal computers in home. In the last few years, an evolution has occurred toward using networks wirelessly in home.
It is common to have multiple computers in a home so that they can share files and other resources such as printers and an Internet connection. And most home users have problems of connecting these computers with wires.
If a user is connected to a network by wire cables, their movement is reduced. Wireless connectivity does not have such restriction and provides freedom of movement and the ability to extend applications to different parts of a home. Wireless technologies are becoming popular because of their mobility and easier installation and wide coverage area. As a result, wireless technologies are taking over the traditional fixed or wired networks.
In both of these network types, the hardware equipment used is router which does most of the work by directing the traffic between the connected devices. By connecting a router to a DSL or cable modem in home can allow multiple computers to share one connection to the internet.
1.1 OVERALL AIM:
The objective of this report is to check whether the wireless network is best choice for home user compare to the wired network, when deploying in Home.
The report contains the things to be considered by user when deciding to deploy a wireless or wired network in Home.
1.3 PROBLEM STATEMENTS:
- To check which choice is the better one wireless or wired one for home user?
- To check wireless network reliable compare to wired network?
- To check wireless network is secure compare to wired network?
- To check wireless network easy to setup compare to wired network?
- To check the Cost of wireless network compare to wired network?
- To check the Performance of wireless network compare to wired network?
By comparing the above mentioned factors will get the clear picture of wireless network compare to wired network.
In this section we will see about how the Wireless network and Wire network works and the networking standards they used.
2.1 WIRELESS NETWORKING:
Wireless networking is a technology in which two or more computers are connected together using radio waves but without physical cables.
It uses spread spectrum technology which is based on radio waves to enable communication between wireless devices in an area. The frequencies its used to transmit data is 2.4 GHz or 5GHz.
Wireless network are used with wireless enabled devices such as laptop, desktop computers with built in wireless NIC card and PDAs. This allows the home users to take the advantage of mobility that wireless network provide.
2.2 Wireless Network working:
To build a wireless home network the equipment consists of wireless router and multiple computers with wireless network interface card either built in, or installed separately in order to send and receive wireless signals. The wireless router performs functions similar to wired networking hubs/switch. It links with a broadband modem to provide the network with a high speed Internet connection. The router transmits radio waves signals to the desktop computers with wireless NIC cards to connect to the network.
After connecting to the network the desktop computers with wireless NIC cards convert the data into a radio signal and retransmit it using an antenna which is mounted on the NIC card.
A wireless router receives the radio waves signal and sends the information to the Internet using a wired ethernet connection.
In the same way the wireless router receives the information from the internet and converts it into radio waves signal and send to the desktop computers with wireless NIC card.
In this way the wireless connection is established between a desktop user and the internet.
2.3 Types of Wireless Network Topologies:
There are two kinds of wireless networks topologies:
Ad-hoc networks are also called as peer to peer wireless network, allows computers to communicate wirelessly with each other without using a router. Each computer can communicate directly with all of the other wireless enabled computers. This topology is useful when users want to share their files with each other. But in this topology the users do not have access to network and its resources.
INFRASTRUCTURE mode consists of one or more access points called as gateways or wireless routers which are connected to an existed network. In a wireless network, an access point is a transmitter/receiver device which is physically connected to the high speed internet connection network using physical cable. It acts as a bridge between the wireless desktop computers and the high speed internet connection network. The access point transmits/received data between the wireless desktop computers and the high speed internet connection network using radio frequencies.
2.4 Wireless Standards:
The reason why standards are needed because standards support greater interoperability among different vendors who develop wireless enable devices. The standards tell us that the product has been developed and tested. There are two primary types of standards: public and official. Public standards are controlled by private groups or organizations. Official standards are published and controlled by official standards organizations such as Institute of Electrical and Electronics Engineers (IEEE).
Presently there are 3 main operational standards are there in wireless network: IEEE 802.11a, IEEE 802.11b and IEEE 802.11g.
|IEEE Standard Protocol||Speed /Data Rate||Frequency Band||Release Date|
|802.11||2 Mbps||2.4 GHz||1997|
|802.11a||54 Mbps||5 GHz||1999|
|802.11b||11 Mbps||2.4 GHz||1999|
|802.11g||54 Mbps||2.4 GHz||2003|
The table shows the different 802.11 standards .
The wireless devices such as Routers, wireless network adapter comes with standards. The choice of which wireless routers is to be deploy in the home network depend on the standards mentioned above. This standards based on factors such as the size of area to be covered in the home network, the number of users to support in the network and the applications to be used in the home network.
2.5 Wired Network:
The wire network is the most common type of data network deployed in the home. In wire network, communication take place over a physical cable or Ethernet cable shared by all devices on the network. Wire networks use twisted pair wiring or fiber optics cable to connect computers. The old wire networks transmitted data at 10 Mbps, modern wire networks can operate at 100 or even 1,000 Mbps.
To deploy a wire network in home we required a network card is to be installed in every computer to be networked. Cable is connected to each network card. Cabling from each computer's network card runs directly to a centralized hub/switch. The hub/switch acts as a concentrator. It concentrates the signals from every computer attached and then distributes the signals back to all the computers. Each computer broadcasts a signal to all other computers on the network. The appropriate computer accepts the signal and sends an acknowledgment. All others ignore it.
The wired network types are CSMA/CD bus, token ring and token bus.
2.6 Wire Network Standards:
The standards used for wire networks are IEEE 802.3.IEEE 802.3is a collection of IEEE standards which defines the MAC layer for bus networks that use CSMA/CD .
The most commonly used standards are mentioned below.
|802.3a||1985||10BASE2 thin Ethernet|
|802.3u||1995||100BASE-T Fast Ethernet and Auto-Negotiation.|
|802.3z||1998||1000BASE-X Gigabit Ethernet|
|802.3ab||1999||1000BASE-T Gigabit Ethernet over twisted-pair|
The table below contains the IEEE 802 Standards. 
The method I used in this project is by collecting and reading the related information about wireless network and wire network
The information I collected is mainly from books, Wikipedia and miscellaneous websites that contain data related to wireless and wire network, then I compared this information with each other in order to decide which information that is relevant for my project work.
From various sources of information I decide which information is relevant and through this I come to my conclusions.
From these conclusions, I will try to find out which one is better wireless or wire network for home users.
In this section I will present the differences between the Wireless network and Wire network to check whether the wireless
network is best choice or the wired one. The factors which I have taken into consideration when comparing wireless and wired network are deployment, Security, Reliability, Performance and cost.
Installation of wireless network is very easy compare to wire network it just require one base station (access point) and wireless adaptor in user devices. It does not require any physical wires which makes wireless network very flexible. One can move a laptop from room to room without losing connection.
Wired networks, on the other hand, it is difficult to wire in older building. There is an additional cost of cabling and is impossible to lay cables in some locations within home.
The expansion of wireless networks is very easy compare to wire network because the network medium is already everywhere. There is no need of cabling require for expansion of wireless network which save a cost of recabling as in wire network. In the expansion of wire network if additional users have to be added then it would require additional wiring.
Wireless network needs special security considerations. In wired networks the security is on physical access control, trusting all the users on the local network, but in wireless the network medium is everywhere therefore anyone on the street or in the neighbor home could connect. The most common solution is wireless traffic encryption. Now days the access points come with built-in encryption. The encryption scheme WEP proved easy to crack, the other schemes WPA and WPA2, are considered secure if a strong password or passphrase is used.
Wireless network suffer a problem of reliability compare to wired network. In wireless networking the radio signals are subject to a wide variety of interference. It uses radio signals to transmit/received data between computers, other radio signals interference from home appliances such as microwave ovens and cordless phones in home may interfere with the network.
The performance of wireless network is slower compare to wired network. The present data transfer rate in wireless network is 11 and 54 Mbps compared to wired network which operate at 100Mbps and newly installed wired network can operate at up to 1000Mbps.
The transmission speeds in wireless network changes with distance from the access point and any interference present in the network. If the distance is increase from the access point then the data transfer rate will start dropping from 54Mbps to 6 Mbps.The interference from other wireless signals (such as cordless phones, microwave oven) in home can cause users to wait before sending data or cause dropped packets that have to be retransmitted which slow down the network.
The cost of wireless networking products somewhat more than the equivalent wired network products. But this increased cost can be outweighed by savings cost associated to running physical cables in wired network.The cost of access points depends on its specifications. If we need an access point which cover large area and support more users then cost of access point will be high.
- Conclusions / Discussion
From the above mentioned chapters I find the solutions to the problem statements which I mentioned in chapter 1 and found out which one is better for home user wired or wireless.
The below table summarizes the comparison between wired and wireless network.
|Installation||Difficult/complex to install||Easier to install|
|Reliability||Less interference||High interference|
Wireless networks are more convenient when Users want to have the freedom to roam, while still remaining connected to internet and sometimes the only feasible choice like in old buildings where installing cables is difficult.
Wired networks are more secure, subject to less interference and offer a high data transfer speed.
If a home user need maximum performance and has low budget and do not care much about mobility, then a wired ethernet network is probably right for home user.
If on the other hand, high cost is not an issue and users are really concerned about the task of wiring home with physical cable, then users should certainly consider a wireless network.
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Book-Home Wireless networking in a Snap by Joe Habra
Ken, Sams publishing (March 25, 2006).
Book- Building a Cisco Wireless LAN by Ron Fuller and Tim
Blankenship, Syngress publication, edition1.
Book- Designing a Wireless Network by Jeffrey Wheat,
Randy Hiser, Syngress publication, edition1.
Book-Ethernet: The Definitive Guide by Charles Spurgeon,
O'Reilly Media publication (February 9, 2000).