Posts tagged wireless network
Wireless Technology - What is Wireless Technology?
Wireless technology is technology that allows for communication without needing physical connectivity.
Examples of wireless technology cellular telephones, personal digital asistant (PDA’s) wireless access points and wireless technology NICs.
New Wireless Technology and Profitable Applications
wireless technology capabilities have launched a whole new platform for monitoring and control of equipment and processes. It has many advantages and benefits over conventional wire and fiber systems. Already many wireless technology control systems are being used and growing and expanding every day. A major costly component is the labor cost of installing the conduit and cable runs as well as the wiring connection of each circuit to make the system operative. The use of a good wireless technology system eliminates this high cost by eliminating its need all together.
Another advantage and benefit is that a wireless technology system has easier and less costly system alteration capability. With monitoring of systems covering large geographic areas such as pipe lines, well water and irrigation systems as well as other remotely situated operations the reduction in gas and labor cost of physically going out to check the status or condition is great. Along with the gas and labor cost is the vehicle and insurance cost.
Controlling components to the system, is a lot more favorable when being able to control from a distance than to commute to the site to change control parameters. A wireless technology monitoring and control system can be moved as needed.
As soon as an unsafe condition in sensed, the needed alerts and alarms can be activated including reverse 911 systems and voice and text messaging directly to our cell phones. Most wireless technology runs on radio waves but some run on infrared or microwave. As mentioned above there are many application for use or wireless technology devices and networks. Also do to a change of events you might be coming home latter and choose to start the heating system or air conditioning at a later time. There is even a system that will monitor your automobile and transfer control to your cell phone. By reducing both we can lower overhead costs. Environmental conditions use power to either generate needed heat or air conditioning. By monitoring the conditions actually needed and optimizing the time we use it can contribute to great savings. The main used wireless technology devices are ZigBEE which transmits both analog and digital values. There are now wireless technology thermostats, occupancy sensors and lighting sensors that just plug and play into a system.
With the use of wireless technology components we can make quick changes in our systems to accommodate new requirements, with our changing building floor plans and adding wired conduit and wire schemes. If a wiring system is being used you can usually link what will still be used with the wireless technology system. If a wireless technology system is being used some modifications or a few added components is all that is needed. What makes up an operational wireless technology automation system? A common system is a SCADA (Supervisory Control and Data Acquisition)program, which allows observation of a system and the status of the components. The next component needed is some network of carrying that information say from some sensor to a device that can take that data and put it on a network in a packet system common to the system. This device can be a Data Acquisition Module. The communication platform to move the data may be wired, fiber or wireless technology.
Categories of wireless technology implementations, devices and standards:
- Radio communication system.
- Amateur radio.
- Land Mobile Radio or Professional Mobile Radio: TETRA, P25, OpenSky, EDACS, DMR, dPMR.
- Cordless telephony:DECT (Digital Enhanced Cordless Telecommunications).
- Cellular networks: 0G, 1G, 2G, 3G, Beyond 3G (4G), Future wireless technology.
- List of emerging technologies.
- Short-range point-to-point communication : wireless technology microphones, Remote controls, IrDA, RFID (Radio Frequency Identification), TransferJet, wireless technology USB, DSRC (Dedicated Short Range Communications), EnOcean, Near Field Communication.
- wireless technology sensor networks: ZigBee, EnOcean; Personal area networks, Bluetooth, TransferJet, Ultra-wideband (UWB from WiMedia Alliance).
- wireless technology networks: Wireless LAN (WLAN), (IEEE 802.11 branded as Wi-Fi and HiperLAN), Wireless Metropolitan Area Networks (WMAN) and (LMDS, WiMAX, and HiperMAN).
Wireless Internet technology, also known as WiFi, is really taking over the way people access the Internet and it has become widely popular in a very short time.
The reason for this is it allows individuals to access the Internet via a network hot spot without the use of cables or wires. Since wireless technology makes connecting to the Internet as simple as possible, many businesses, universities, hotels, cafes, schools, airports and homes are realizing the importance of offering easy Internet connections to both students and professionals. For those offering free service this is not big deal, but for those charging for Internet it is. There are, however, security precautions that can eliminate unauthorized users that include a virtual private network and Internet Protocol Security.
The hot spots are really catching on worldwide, so if you are traveling or even just in your city, you will notice many areas that say hot spot or Internet zone. Basically, you need to have a high speed Internet service, a router, and then each computer that will access the network needs a wireless technology Internet card if you did not buy it WiFi ready.
If you want to install wireless yourself you should simply buy the recommended materials and then follow the directions. Finally, when you have wireless Internet installed in your home or office, remember that you should take some precautions to prevent your neighbors or other unauthorized users from stealing your Internet. A virtual private network or Internet Protocol Security will secure your network and allow only authorized users to connect.
What is a wireless technology?
What are the benefits of using a wireless technology network?
* Having the network signal everywhere without being restricted to specific cable terminal locations.
* It reduces the building’s networking overall cost comparing with the wired network.
What are the wireless technology network components?
1. Modem: To provide the Internet to this network.
2. Wireless Router: To provide the network to the local network end points such as computers, laptops, printer . Etc.
3. Cables: To connect the Router to the Modem and to configure the Router as well.
4. Wireless adapter: In case your computer doesn’t have a built in wireless component you have to have a Wireless Adapter.
What is the structure of building a wireless technology network?
The Modem receives the internet data signals from your ISP (Via ADSL line, cable Modem, wireless connection etc) and convert and transmit those data to the Wireless Router via a Network cable.
The Wireless Router receives those data signals and transmits them to all the network terminals via wireless network medium.
Note: You can setup your wireless network without a Wireless Router in case if your Modem has a Router capabilities like the most of the new internet Modems.
The network terminals such as Computers and laptops have Wireless Adapters which communicate to the wireless network and complete the connection with the Wireless Router.
What are the benefits of having a Wireless router in my network?
The dedicated Wireless Router will provide more security to your network hence it will work as a hardware firewall between your local network and the Internet line.
The wireless technology network is affected by the Microwave devices and wireless devices such as a cordless handy phone so its better to prevent putting the wireless access points or wireless Routers near such devices and better to choose frequency bands which are different than the ones used by the cordless telephone, also the wireless technology Networks affected by some kind of materials such as foils, hence all of the mentioned devices and materials would make an attenuation to the wireless technology Networking signals and will reduce or might block the signal.
The Security of your wireless technology network is the most important issue you have to take care about, if your wireless technology network is not secured your neighbors might use your internet without your consent.
If you want to install a wireless network in a huge building you can simply use the Wireless Access points to extend the wireless technology signals everywhere.
Ad Hoc Network - What is Ad Hoc Network?
We have all heard the term ad hoc. Here is what I found on the ad hoc definition. Directly translated from its Latin origin, ad hoc means”for this”—the term is generally used to imply that something is intended for a particular situation or purpose. Hence, an ad hoc committee is one that is formed to handle a particular issue. Something that is ad hoc or that is done on an ad hoc basis happens or is done only when the situation makes it necessary or desirable, rather than being arranged in advance or being part of a general plan. Interesting, huh.
So now that we have the ad hoc definition let’s see if we can use it in a sentence that will impress your friends. For example, “On an ad hoc basis, Congress has placed ceilings on military aid to specific countries”. In this case ad hoc is used as an adjective meaning improvised or impromptu. In truth, the ad hoc definition is exactly that: ad hoc.
Common terms using this word are found in the IT industry and include: ah hoc network, ad hoc query, ad hoc surveys, ad hoc testing, ad hoc report, ad hoc analysis, and ad hoc protocol list. Actually, ad hoc has several specific applications in the world of Information Technology. The ad hoc definition as used in; ad hoc networks, ad hoc reporting and ad hoc testing has a very precise meaning pertaining to the Information Technology Industry.
When it comes to computer networks, ad hoc is typically associated with wireless devices. When a connection is established between two or more computers without having a base station, they have formed an ad hoc network. The ad hoc definition still holds in this case because the connection is not permanent but rather has been formed temporarily to meet a particular need. Ad hoc reporting, also called ad hoc querying, refers to a system that permits users to customize a data query from a database instead of limiting them to preset, “canned” options. Since the results of the query are dependent on the specific query submitted, they are created for the specific moment, ad hoc.
For software development companies, the ad hoc definition applies most frequently to testing. Ad hoc testing is a type of quality control testing that operates on randomization rather than on a fixed technique. If you are developing software and don’t have the time or resources to invest in properly testing it, Software development companies provides a host of testing services, including ad hoc testing.
Wireless ad hoc network.
A wireless ad hoc network is a decentralized type of wireless network. The network is ad hoc because it does not rely on a preexisting infrastructure, such as routers in wired networks or access points in managed (infrastructure) wireless networks. In addition to the classic routing, ad hoc network can use flooding for forwarding the data.
2 Technical requirements
3 Medium-access control
4 Simulation of wireless ad hoc network
The decentralized nature of wireless ad hoc network makes them suitable for a variety of applications where central nodes can’t be relied on, and may improve the scalability of wireless ad hoc network compared to wireless managed networks, though theoretical and practical limits to the overall capacity of such networks have been identified.
Wireless ad hoc network can be further classified by their application:
mobile ad hoc network (MANET)
wireless mesh networks (WMN)
wireless sensor networks (WSN)
An ad hoc network is made up of multiple nodes connected by links .
The network must allow any two nodes to communicate, by relaying the information via other nodes. In most wireless ad hoc network, the nodes compete for access to shared wireless medium, often resulting in collisions (interference). Simulation of wireless ad-hoc networks
Agent-based modeling and simulation offers such a paradigm. Agent-based models are thus effective in modeling bio-inspired and nature-inspired systems.
Steps to set up an Ad Hoc Network.
For this, you just need to setup the ad hoc network and share the folder which needs to be used by the client computer. In this mechanism, one computer acts as a host containing the sharable folder and other computers act as clients that connect to the host in order to access the shared folder. This is a temporary network which gets disappeared once the host computer is shut down or goes out of range in case of wireless network. For setting up wireless ad hoc network, you can follow the below mentioned steps:
1. Go to the control panel & open Network Connections. Right click and choose properties, select the wireless networks tab.
2. Click on Add button present in the preferred networks section. Uncheck the box saying this key is provided by me automatically and check the box saying this is a computer to computer network.
4. Save the changes by clicking on OK button and your network is now ready to appear in preferred network section.
Once the ad hoc network is created, you need to look for the wireless icon present in the system tray, right click the same and then choose view available networks option. This type of network is known as networking of two computers without the help of a router or an access point and is very helpful in business meeting environments where a quick file sharing is required.
Wireless Ad Hoc Network.
Why and when would you want to install a wireless ad hoc network? The first type of set up will be if you do have an internet connection but you lack a wireless access point or a wireless router to share that connection. First, each computer will need a wireless adapter. Next click the advance tab near the bottom right and click (computer to computer ad-hoc networks only). Second you will need to add your ad hoc wireless network so click add. Fill in the network name (SSID) and choose WEP encryption. You will want to use WEP if are using older adapters and use WPA if you are sure all the computers on the ad-hoc wireless network can handle it. Because we will want everyone to share our wired Ethernet connection you will need to enable ICS (Internet Connection Sharing) on the wired network adapter not the wireless adapter. Just go to your network connections and right click the Ethernet connections and press the advanced tab. Check the box that says enable ICS. ICS will act as a DHCP server and assign private TCP/IP address to your ad-wireless network clients. Each computer will receive a TCP/IP address from 192.168.0.1 to 192.168.0.254. ICS will also tell the computers on the network the location of their default gateway which is the computer you set up ICS on.
Trouble shooting a wireless ad hoc network can be a head ache. Make sure you set up the ICS computer and one client computer.
Basics of Setting Up Wireless Ad Hoc Network.
To begin with, networking was common among computers of several organizations and government bodies over the last century. So if you have decided on a wireless network, you should know something about how to set up wireless network. First consider how many computers will be connected to the network, where the home of the entire network will be, and what operating system do you plan to use in the systems. If you plan to build a new network and not develop / upgrade an existing one, place the wireless router in a central location so the network coverage is good throughout the place. The next step is to fix access points on the router. The placement of the access points is also important as they also affect the speed and connectivity of the computers in wireless networking. The next step is to configure your wireless adapter with the router and access points. All subsequent settings can be set up manually but it is important that all the wireless adapters must share the same parametric settings for the wireless networking to function properly.
Once this has been done, the last step is to configure the Ad Hoc network to the home LAN or all the computers that need to access the wireless network. There is also a security aspect which one needs to consider when you set up wireless network. Other aspects related to setting up a wireless networking could be easily understood while working on it, or if you think you cannot do the work yourself, get a technician or company to set up wireless network.