ISSC340 Presentation Robin Watson
Evolution Of Wi-Fi
Robin R. Watson
1 Generation st • 802.11
• Data Rate: 2Mps
• Use Case: Internet
802.11
•
•
•
•
Specifies an over-the-air interface between 2 wireless end users.
Provides 1 to 2 Mbps transmission in the 2.4 GHz band.
AN Access Point is installed to act as a bridge between Wireless and Wired Networks.
The AP is connected to a wired network and is equipped with antennae to provide wireless connectivity. With PCI 802.11 LAN card
Network connectivity to the legacy wired
LAN
With PCMCIA 802.11 LAN card.
2 Generation nd • 802.11b
• Data rate: 11Mbps
• Use Case: Appliances
802.11b
•
An expansion of the original 802.11 b was ratified in 1999.
•
There are two main frequencies used for WiFi, 2.4Ghz (802.11b) and 5Ghz (802.11a). Using
2.4Ghz worked with mainstream devices and was the one that most people used. 802.11b was the WiFi of choice for some years, mainly due to the fact that 11a was more expensive
2.4GHz is unregulated and depending on proximity home appliances could interfere with the signal transmission.
•
3 Generation rd • 802.11g/a
• 54Mbps
• Rich data Web experience
802.11g/a
• Supports bandwidths up to 54Mbp
• Uses 2.4 GHz frequency for greater range.
• 802.11g radio cards and access points in late were released 2002 or early 2003.
• A big difference with 802.11a is that it operates in the 5GHz frequency band with twelve separate non-overlapping channels
4 Generation th • 802.11n
• Data rate:Up to 600Mbps
802.11n
• wireless networking standard that uses multiple antennas to increase data rates
• improves network throughput over the two previous standards—802.11a and 802.11g— with a significant increase in the maximum net data rate from 54 Mbit/s to 600 Mbit/s
• It can be used in the 2.4 GHz or 5 GHz frequency bands.
5 Generation th •
•
•
•
802.11ac
Data Rate : Up to 3.6Gbps
1.8 Gbps
Whole home coverage
802.11ac
• 802.11ac is an evolutionary improvement to
802.11n
• One of the goals of 802.11ac is to deliver
Robin R. Watson
1 Generation st • 802.11
• Data Rate: 2Mps
• Use Case: Internet
802.11
•
•
•
•
Specifies an over-the-air interface between 2 wireless end users.
Provides 1 to 2 Mbps transmission in the 2.4 GHz band.
AN Access Point is installed to act as a bridge between Wireless and Wired Networks.
The AP is connected to a wired network and is equipped with antennae to provide wireless connectivity. With PCI 802.11 LAN card
Network connectivity to the legacy wired
LAN
With PCMCIA 802.11 LAN card.
2 Generation nd • 802.11b
• Data rate: 11Mbps
• Use Case: Appliances
802.11b
•
An expansion of the original 802.11 b was ratified in 1999.
•
There are two main frequencies used for WiFi, 2.4Ghz (802.11b) and 5Ghz (802.11a). Using
2.4Ghz worked with mainstream devices and was the one that most people used. 802.11b was the WiFi of choice for some years, mainly due to the fact that 11a was more expensive
2.4GHz is unregulated and depending on proximity home appliances could interfere with the signal transmission.
•
3 Generation rd • 802.11g/a
• 54Mbps
• Rich data Web experience
802.11g/a
• Supports bandwidths up to 54Mbp
• Uses 2.4 GHz frequency for greater range.
• 802.11g radio cards and access points in late were released 2002 or early 2003.
• A big difference with 802.11a is that it operates in the 5GHz frequency band with twelve separate non-overlapping channels
4 Generation th • 802.11n
• Data rate:Up to 600Mbps
802.11n
• wireless networking standard that uses multiple antennas to increase data rates
• improves network throughput over the two previous standards—802.11a and 802.11g— with a significant increase in the maximum net data rate from 54 Mbit/s to 600 Mbit/s
• It can be used in the 2.4 GHz or 5 GHz frequency bands.
5 Generation th •
•
•
•
802.11ac
Data Rate : Up to 3.6Gbps
1.8 Gbps
Whole home coverage
802.11ac
• 802.11ac is an evolutionary improvement to
802.11n
• One of the goals of 802.11ac is to deliver