WLAN: Wireless LAN

Hello Friends, In this blog post I am going to let you know about the wireless LAN. A wireless LAN is one that makes use of a wireless transmission medium.

Wireless LAN is a fast-growing market introducing the flexibility of wireless access into the office, home, or production environments. Wireless LAN is typically restricted in their diameter to buildings, a campus single room, etc.

Wireless LAN is operated by individuals, not by large scale providers. The main goal of wireless LAN is to replace office cabling and additionally to introduce higher flexibility for ad-hoc communication.

Until relatively recently, wireless LAN was a little used. The reasons for this included high prices, low data rates, occupational safety concerns, and licensing requirements.

As these problems have been addressed, the popularity of wireless LAN has grown rapidly. A wireless LAN must satisfy some type of requirements typical of any LAN, including high capacity, ability to cover a short distance, full connectivity among attached stations, and broadcast capability. Furthermore, there are a number of requirements specific to the wireless LAN environment.

The following are the main requirements for a wireless LAN.

Throughput:

To maximum capacity, the medium access control protocol should make efficient use as possible of the wireless medium.

A number of nodes:

Wireless LAN may require to support hundreds of nodes across multiple cells.

Connection to backbone LAN:

Generally, interconnection with stations on a wired backbone LAN is needed. This is easily accomplished for infrastructure wireless LAN through the use of control modules that connect to both types of LAN. There may also require to be accommodation for mobile users and ad-hoc wireless networks.

Service Area:

For a wireless LAN, a typical coverage area has a diameter of 100 to 300 m.

Battery power consumption:

Mobile workers use battery-powered workstations that require to have long battery life when used with wireless adapters. This suggests that a MAC protocol that needs mobile nodes to monitor access points constantly or engage in frequent handshakes with a base station is not suitable.

Typical wireless LAN implementation has features to decrease the power consumption while not using the network like a sleep mode.

Transmission robustness and security:

Unless appropriately designed, a wireless LAN may be interference prone and easily eavesdropped. The design of a wireless LAN must allow reliable transmission even in noisy environments and should provide some level of security from eavesdropping.

Collected network operation:

When wireless LAN becomes more popular, it is quite likely for two or more wireless LAN to operate in the same area or in some areas where interference between the LAN is possible. This type of interference may thwart the normal operation of a MAC algorithm and may permit unauthorized access to a particular LAN.

License Free Operation:

Users would prefer to buy and operate wireless LAN products without having to secure a license for the frequency band employed by the LAN.

Hand-off/Roaming:

In a wireless LAN, the MAC protocol used should enable mobile stations to move one cell to another.

Dynamic Configuration:

MAC addressing and network management aspects of the LAN should allow dynamic and automated addition, deletion, and relocation and end systems without disruption to other users.

In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.

Hope! you would have enjoyed this post about WLAN -Wireless LAN.

Please feel free to give your important feedbacks in the comment section below.

Have a great time! Sayonara!

Anurag

I am a blogger by passion, a software engineer by profession, a singer by consideration and rest of things that I do is for my destination.