OCU C)NP A Week 03 Lesson 05 Discussion
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The first wireless LAN standard was developed by the Institute of Electrical and Electronics Engineers, and the rest of the family of standards are also maintained by the Institute. The first standard was only known as 802.11 and published in 1997. This first version allowed speeds up to 2Mbps. Being the first version, devices were not designed to a single standard and did not communicate with each other well.
Speeds really took off after standard 802.11g and later versions. Version 802.11G allowed fifty-four megabytes per second over a 20.4 gigahertz band. This version improved security over earlier models and was backwards compatible with the earlier models as well.
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Well explained about LAN standards and your points are good. There are many diverse types of Wi-Fi standards. Your router, laptop, tablet, smartphone, and smart home devices use different wireless standards to connect to the internet. Wireless standards change every few years, too. Updates bring faster internet, better connections, more simultaneous connections, and so on.
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Most wireless LANs (WLANs) are based on the IEEE 802.11 standard, which defines a physical layer medium that uses modulation schemes to encode data onto a wireless carrier signal. Wi-Fi 5 only operates in the 5 GHz band, but in mixed mode it can use the older standard (802.11g/n) 2.4 GHz band. Ratified in 1999. The 802.11a standard uses the same core protocol as the original standard, operates in the 5 GHz band, and uses orthogonal frequency division multiplexing (OFDM) with 52 subcarriers and a maximum raw data rate of 54 Mbit/s. We provide a realistically achievable net. A medium WLAN throughput of 20 Mbit/s is standardized in IEEE 802.11 and operates in two basic modes: infrastructure mode and ad hoc mode. Infrastructure mode – A mobile device or client connects to an access point (AP), and the AP connects to the LAN or Internet via a bridge. Clients send frames to other clients via the AP. A local area network (LAN) is a communication system that enables connectivity and resource sharing between independent devices within a medium-sized geographic area. Distributed data interface network. Wireless LAN (WLAN) is a wireless computer that uses wireless communications to connect two or more devices to form a local area network (LAN) within a limited area, such as a home, school, computer lab, or campus. It’s a network. Or an office building.
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I very much enjoyed your knowledge on the 802.11 standard of WiFi. There have been many contemporaries that are based off of the classic standard from 1997. The speed of throughput has truly grew exponentially in the past 20 plus years as well. Going from a few kilobytes per second to almost multiple gigabytes per second on some advanced networks. Technological advancements in telecommunications are a wonderful sight to behold.
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The first wireless LAN standard is the 802.11a wifi standard that premiered in 1997. Working on a 5 GHz frequency, this standard was useful for industrial applications. It uses MAC addresses similar to ethernet frames for it’s allocations and organization of traffic. Due to the common frequency in use, microwave ovens, cordless phones, and bluetooth can cause interference in rare occasions.
The second wireless LAN standard is 802.11p. This standard is used specially for dedicated short range communications. This is from a government project (The Department of Transportation) from the previous communications access for land mobiles. The practical applications for this standard are primarily communication between motor vehicles and roadside checkpoints. One example that comes to mind are toll booths and the EZpass transponders that many cars and trucks use.-
I remember the days when using Bluetooth enabled devices you could hear the transmission coming to cellphones through speakers with a sort of beeping rhythm. A problem I deal with today is the microwave is a short distance from my desktop, so in use my headphones cut in and out due to the frequency interference.
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Two wireless LAN standards are 802.11a, this one transfers data a lot faster but it can only do so from a range of 50-100 feet. It also allows multiple different connections and is less likely to come across an interference. Another example would be the IEEE 802.11g, this one is one of the most popular one used and it is used to send information and receive it. This one is also a “channel bonding” type of LAN, which means it can use two channels at a time. Wi-Fi is a good example as well of a WLAN or (Wireless Local Area Networks) as it has some of the same qualities as the others and it is also a wireless connection for other devices to send and receive information.
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