Wireless connections are used to connect network nodes of any kind of computer network. These can explained by the examples of cell phone networks, satellite communication networks, wireless local networks, microwave networks etc. Wireless connections usually use radio waves so as to connect various devices like a laptop for internet connection.
Types of Wireless Connection
- Wireless Personal Area Network also known as PAN- It used for interconnection devices which range within a short span, usually within the reach of the person.
- Wireless Local Area Network also known as LAN- It is used to link more than one device by using a method of wireless distribution, which provides a connection through the internet to the access points.
- Wireless Metropolitan Area Networks also known as MAN: It is used for connecting various wireless LANs together.
- Wireless Wide Area Network also known as WAN: It is used to cover vast areas like the neighbouring cities and towns.
- Wireless Mesh Network-A wireless mesh network can be defined as a type of wireless network which is made by arranging various radio nodes in a mesh topology. Every node is used to send the message from one node to another.
- Global Area Network- A global area network also known as GAN is a type of network that supports mobile across satellite coverage areas, wide number of wireless LANs, etc.
- Space Network- Space networks are the kinds of networks that are used to communicate with the spacecraft. Although the communication is preferred when they are around the Earth.
Benefits of Wireless Connection
- Convenience– It is highly convenient to access the network resources within the coverage area of the wireless connection or any Wi-Fi hotspotfrom any location.
- Productivity-A wireless access to the company’s internet as well as to the company’s key resources and applications helps to encourage collaboration and also to the staff to get the job done.
- Security- Strong and robust security protections are provided by the wireless networks due to its advanced versions.
- Easy setup-The installation is very quick and quite cost effective since there are no cable connections that need to be installed.
- Expandable-To expand a wired network it might require additional wiringbut with wireless connection one can easily expand it with the existing equipment.
- Mobility-We are no longer confined to the desk, as it used to be with a wired connection. We and our employees can access online internet connection from all over the place like, conference room meetings.
- Cost-Operational costs can be less than the wired networks since wireless networks reduce or totally eliminates the wiring costs.
- Interferences- it is very common for the wireless networks to get interference due to electromagnetic effect which is not the case with the wired systems. The interference can be caused due to the radio waves emitted by other equipment that are present and are often used for communication. This equipment is capable of generating radio waves that are close to the radio bands used for communication. Interference can lead to degradation of the signal or can even cause failure of the system.
Hidden node problem- In few networks when a node is quite visible form an AP of wireless connection then the problem of hidden node occurs. It does not occur from other nodes which are communicating with that AP. This can lead to some difficulties in having access control to the media.
Multipath fading- In multipath fading due to reflections, two or more different routes which are taken by a particular signal, can result in cancelling out a signal at specific location and strengthen the signal in other places.
- Reflection and absorption- There are some kind of materials which can absorb the electromagnetic waves which prevents it from reaching the particular receiver and in some cases a reflection occurs, usually involving a metallic or some kind of conductive materials. This leads to dead zones which mean there is no reception. Indoor mobile signals are reduced in modern homes with aluminium foiled thermal isolation. This can reduce signals by almost 10 dB which leads to complaints from the user about bad signal involving long-distance cell signals
- Shared resource problem-The wireless spectrum is shared by multiple nodes within the range of transmitters and is a limited resource. With multiple users participating in the bandwidth allocation results in a complex task. If the demand increases then there is more capacity crunchthat is very likely to occur.